Reliable Bonnet Strut Manufacturer for Automotive Applications
TieYing specializes in manufacturing high quality bonnet struts designed for smooth, safe and controlled vehicle hood lifting. With advanced production capabilities and customization options, we supply automotive gas springs for OEM projects, aftermarket distributors and industrial applications worldwide.
What Is a Bonnet Strut?
A bonnet strut, also known as a bonnet gas strut or hood lift support, is a mechanical gas spring designed to assist the opening, lifting and holding of a vehicle bonnet in a stable position.
Unlike traditional support rods, bonnet struts provide controlled movement and reduce the effort required when opening the hood. They also improve safety by preventing accidental bonnet closing during inspection and maintenance.
Traditional Support Rod vs Bonnet Gas Strut
| Comparison | Traditional Support Rod | Bonnet Gas Strut |
|---|---|---|
| Operating Principle | A manual metal rod that physically supports the bonnet after opening | A gas powered lifting support that uses compressed nitrogen to assist bonnet opening and holding |
| Opening Method | Requires manual lifting and positioning of the support rod | Provides automatic lifting assistance with smooth extension |
| User Effort | Requires more physical effort to open and secure the bonnet | Reduces lifting force and makes bonnet operation easier |
| Movement Control | Sudden movement without damping control | Controlled extension and smooth movement through gas pressure and damping design |
| Bonnet Holding | Depends on correct placement of the support rod | Holds the bonnet securely in an open position |
| Safety Performance | Risk of incorrect placement or accidental rod release | Provides more stable support and reduces accidental bonnet closing risk |
| Convenience | Requires manual handling every time the bonnet is opened | Quick and convenient operation with assisted lifting |
| Appearance | Visible metal rod creates a traditional mechanical appearance | Provides a cleaner and more modern engine compartment appearance |
| Installation | Simple structure but requires fixed support points | Requires properly designed brackets and mounting positions |
| Space Requirement | Needs storage space for the support rod when not in use | Compact design integrated into the bonnet structure |
| Durability | Metal rod may bend, loosen or wear over time | Designed for repeated opening cycles with reliable performance |
| Vehicle Applications | Common in older vehicles and basic applications | Widely used in modern cars, SUVs, electric vehicles and commercial vehicles |
| Maintenance Experience | Requires manual support during inspection and repair | Allows easier access to engine compartments during maintenance |
| OEM Compatibility | Limited customization options | Available with customized force, stroke length, brackets and mounting solutions |
A traditional support rod provides a basic mechanical solution for holding a vehicle bonnet open, but it requires manual operation and offers limited convenience. A bonnet gas strut delivers smoother lifting, safer holding and improved user experience through controlled gas pressure assistance, making it the preferred solution for modern automotive applications.
How Does a Bonnet Strut Work?
A bonnet strut works by using compressed nitrogen gas inside a sealed cylinder to generate controlled lifting force. When installed between the vehicle bonnet and body structure, the gas strut assists the opening movement, controls the lifting speed and securely holds the bonnet in an open position.
Compared with traditional mechanical support rods, bonnet gas struts provide a smoother, safer and more convenient lifting solution for modern automotive applications.
The working process includes four key stages:
1. Closed Position
Gas Strut in Compressed State
When the vehicle bonnet is closed, the bonnet strut remains in a compressed position. The piston rod is pushed into the cylinder, reducing the internal gas volume and increasing the pressure inside the chamber.
The compressed nitrogen gas stores potential energy, preparing the strut to provide lifting assistance when the bonnet is opened.
Key Function:
- Compact installation position
- High internal gas pressure storage
- Ready to support bonnet lifting force
2. Gas Pressure Assistance
Nitrogen Gas Creates Controlled Lifting Force
When the bonnet is released and manually lifted, the compressed nitrogen gas inside the cylinder pushes against the piston, generating an outward force.
This gas pressure helps overcome the weight of the bonnet, reducing the effort required from the user and allowing easier opening.
The force output of the bonnet strut can be customized according to:
- Bonnet weight
- Vehicle structure
- Installation angle
- Required opening force
Key Benefit:
The gas spring provides balanced support instead of relying entirely on manual lifting.
3. Controlled Extension
Smooth Opening Through Damping Control
During extension, the internal damping system controls the movement speed of the piston rod.
This prevents the bonnet from opening too quickly or suddenly, ensuring a smooth and controlled lifting process.
A properly designed bonnet strut provides:
- Smooth extension movement
- Reduced impact during opening
- Improved user comfort
- Better protection for bonnet components
The damping performance is especially important for automotive applications where repeated daily operation is required.
4. Fully Open Position
Secure Holding for Maintenance Access
When fully extended, the bonnet strut supports the bonnet and keeps it securely in the open position.
This provides a safer working environment during:
- Engine inspection
- Vehicle maintenance
- Repair operations
- Routine checks
Unlike traditional support rods that require manual positioning, bonnet gas struts automatically maintain stable support once installed.
Bonnet Strut Working Process
Closed Position
↓
The gas strut is compressed. Nitrogen gas inside the cylinder stores energy and prepares the system for lifting assistance.
↓
Gas Compression
↓
When the bonnet starts opening, compressed nitrogen expands and pushes the piston rod outward, generating controlled lifting force.
↓
Controlled Extension
↓
The damping system regulates extension speed, allowing smooth movement and preventing sudden opening.
↓
Fully Open Position
↓
The extended gas strut securely holds the bonnet open, providing stable support for easier maintenance access.
Why This Working Principle Matters
For automotive manufacturers and aftermarket suppliers, the performance of a bonnet strut depends on precise force calculation, reliable sealing technology and accurate damping control.
TieYing designs and manufactures automotive gas springs with customized force settings, dimensions and mounting solutions to meet different vehicle requirements.
Automotive Applications of Bonnet Struts
Bonnet struts are widely used in modern automotive applications to provide smooth lifting assistance, reliable support and improved safety when opening a vehicle bonnet. From passenger cars to commercial vehicles and customized automotive projects, gas struts help manufacturers create a more convenient and user-friendly bonnet opening experience.
TieYing bonnet struts are engineered according to different vehicle structures, bonnet weights and operating conditions. Through precise force calculation, customized dimensions and flexible mounting solutions, we provide reliable automotive gas spring solutions for OEM manufacturers, aftermarket suppliers and vehicle modification companies worldwide.
Passenger Vehicles
Passenger vehicles require bonnet struts that deliver smooth operation, compact installation and consistent performance throughout daily use. Modern vehicles often replace traditional support rods with gas spring systems to improve convenience, safety and overall user experience.
TieYing provides bonnet gas strut solutions for a wide range of passenger vehicles, including:
Sedans
Sedans typically have lightweight to medium-weight bonnet structures that require accurate force control to achieve smooth opening and closing performance.
Our bonnet struts help provide:
- Easy bonnet lifting with reduced manual effort
- Stable holding during vehicle inspection
- Smooth extension without sudden movement
- Long service life under repeated daily operation
SUVs
SUV bonnets are generally larger and heavier compared with standard passenger cars. They require stronger gas spring support and optimized force settings.
TieYing bonnet struts can be customized for SUV applications with:
- Higher lifting force requirements
- Different mounting angles
- Extended stroke lengths
- Heavy-duty operating conditions
Pickup Trucks
Pickup trucks often operate in demanding environments where reliable bonnet support is essential.
Our automotive gas springs are designed to provide:
- Durable performance in outdoor conditions
- Stable bonnet support during maintenance
- Resistance to vibration and frequent usage
- Customized brackets for different vehicle structures
Electric Vehicles
Electric vehicles often require specialized bonnet support solutions due to different front compartment designs and weight distribution.
TieYing works with customers to develop bonnet struts suitable for EV applications, including:
- Compact installation requirements
- Lightweight structural designs
- Precise opening force control
- Smooth user operation
Commercial Vehicles
Commercial vehicles require gas struts that can withstand frequent operation, heavier components and more demanding working environments.
TieYing bonnet struts are suitable for various commercial applications, including:
Vans
Vans are commonly used for transportation, delivery and service operations where frequent bonnet access is required.
Our gas spring solutions provide:
- Reliable support during regular inspections
- Reduced operator effort
- Smooth opening performance
- Consistent operation over repeated cycles
Light Trucks
Light trucks require stronger bonnet support systems due to larger bonnet panels and heavier structures.
TieYing designs automotive gas springs with customized:
- Force output
- Cylinder size
- Stroke length
- Mounting connection options
Special Vehicles
Special purpose vehicles often require customized bonnet support solutions based on unique designs and operating environments.
Applications include:
- Service vehicles
- Utility vehicles
- Engineering vehicles
- Fleet vehicles
Our engineering team can develop gas strut solutions according to specific vehicle requirements.
Modified Vehicles
Modified and specialty vehicles often require customized bonnet strut solutions to improve functionality, appearance and user experience.
TieYing supports various modification projects with flexible customization options for different vehicle designs.
Custom Vehicles
Custom vehicle builders often require gas springs with specific dimensions, force levels and mounting solutions.
We provide:
- Custom length options
- Adjustable force requirements
- Special mounting brackets
- Prototype development support
Performance Cars
Performance vehicles may use upgraded bonnet systems that require reliable and lightweight support solutions.
TieYing bonnet struts help provide:
- Smooth opening operation
- Secure bonnet positioning
- Improved engine access
- Premium user experience
Restoration Projects
Classic and restored vehicles often require replacement or upgraded bonnet support systems while maintaining original appearance.
Our custom manufacturing capabilities allow us to produce bonnet struts according to:
- Original specifications
- Existing mounting positions
- Required lifting performance
- Special vehicle requirements
Customized Bonnet Strut Solutions for Different Vehicles
Every vehicle design has different bonnet dimensions, weight distribution and installation conditions. A properly designed bonnet strut requires accurate calculation of lifting force, stroke length and mounting position.
TieYing provides customized automotive gas spring solutions based on customer requirements, including:
- Customized force range
- Different tube and rod dimensions
- Various end fittings and mounting brackets
- OEM replacement solutions
- Small batch development and mass production support
Whether you need bonnet struts for passenger vehicles, commercial fleets or customized automotive projects, TieYing delivers reliable gas spring solutions designed for performance, safety and long-term durability.
Why Choose TieYing Bonnet Struts?
Choosing the right bonnet strut supplier is essential for automotive manufacturers, aftermarket distributors and vehicle solution providers. A reliable gas spring must deliver accurate force output, stable performance, long service life and consistent quality across every production batch.
With extensive experience in gas spring manufacturing, TieYing provides professional automotive bonnet strut solutions designed for different vehicle structures, operating conditions and customer requirements.
From product design and engineering development to mass production and quality inspection, we support global customers with reliable manufacturing capabilities and customized solutions.
Precision Manufacturing
Accurate Production for Consistent Performance
Automotive bonnet struts require precise manufacturing to ensure correct lifting force, smooth movement and reliable operation throughout their service life.
TieYing uses advanced production equipment and controlled manufacturing processes to maintain consistent product quality across different production batches.
Our manufacturing capabilities include:
- Precision tube processing
- High accuracy piston rod machining
- Professional sealing assembly
- Controlled gas filling technology
- Automated and manual quality inspection processes
Through strict production control, every bonnet strut is manufactured to achieve:
- Stable gas pressure performance
- Accurate dimensions
- Reliable extension and compression movement
- Consistent installation compatibility
For OEM customers and distributors, stable production quality helps reduce installation issues and improves product reliability in the market.
Custom Engineering Support
Tailored Bonnet Strut Solutions for Different Vehicles
Every vehicle has different bonnet weight, mounting space and operating requirements. A standard gas strut cannot always provide the ideal performance for every application.
TieYing provides professional engineering support to develop customized bonnet strut solutions based on customer specifications.
Our customization capabilities include:
Customized Force Range
We calculate and adjust gas pressure according to bonnet weight, installation position and required lifting performance.
This ensures:
- Smooth opening movement
- Proper lifting assistance
- Secure bonnet holding
Customized Tube Diameter and Rod Size
Different applications may require different cylinder sizes and rod structures.
We provide customized designs to meet:
- Space limitations
- Load requirements
- Vehicle design specifications
Customized Stroke Length
The stroke length determines the opening distance and movement range of the bonnet.
TieYing can customize stroke length according to:
- Vehicle bonnet design
- Installation position
- Required opening angle
Customized End Fittings
Different vehicles use different connection methods.
We offer various end fitting options, including:
- Ball socket connections
- Bracket mounting systems
- Customized attachment designs
Customized Mounting Solutions
Our engineering team works with customers to develop suitable mounting solutions for different vehicle structures.
We support:
- OEM vehicle projects
- Replacement applications
- Modified vehicle solutions
- Special automotive designs
Long Service Life
Reliable Performance Under Repeated Operation
Automotive bonnet struts are used frequently throughout the vehicle lifecycle. They must withstand repeated opening and closing cycles while maintaining stable lifting performance.
TieYing bonnet struts are designed with durability in mind and undergo testing to evaluate:
- Gas pressure stability
- Sealing performance
- Extension and compression cycles
- Corrosion resistance
- Structural reliability
High quality materials, precise assembly and strict inspection procedures help ensure dependable operation in different environments.
Whether used in passenger vehicles, commercial vehicles or modified automotive applications, TieYing gas springs are engineered for long term performance.
Quality Control
Strict Inspection From Production to Delivery
Quality control is an essential part of automotive gas spring manufacturing.
Before shipment, TieYing bonnet struts undergo inspection procedures to verify product performance and reliability.
Quality checks include:
- Dimension inspection
- Gas pressure testing
- Leakage testing
- Appearance inspection
- Functional testing
By maintaining strict quality standards, we help customers receive products that meet their application requirements and production expectations.
Global Supply Capability
Supporting Automotive Customers Worldwide
TieYing supplies automotive gas spring solutions for customers across different markets, including automotive manufacturers, distributors, replacement parts suppliers and vehicle modification companies.
Our production capabilities allow us to support:
- OEM manufacturing projects
- ODM development programs
- Bulk production orders
- Replacement gas spring supply
- Customized automotive applications
With flexible production capacity and professional technical support, TieYing helps international customers develop reliable bonnet strut solutions for different vehicle markets.
Your Trusted Bonnet Strut Manufacturing Partner
Whether you need standard bonnet gas struts, replacement hood lift supports or fully customized automotive gas spring solutions, TieYing provides professional manufacturing support from concept development to final production.
With precision manufacturing, engineering expertise and flexible customization capabilities, we help global partners create safer, smoother and more reliable bonnet opening systems.
Custom Bonnet Strut Manufacturing Process
At TieYing, every bonnet strut is manufactured through a systematic production process to ensure accurate performance, reliable quality and consistent supply capability.
From initial product requirements to final delivery, our engineering and manufacturing teams work closely with customers to develop automotive gas spring solutions that meet specific vehicle requirements.
Our bonnet strut manufacturing process includes:
1. Requirement Analysis
Understanding Vehicle Requirements Before Production
Every successful bonnet strut project begins with a detailed understanding of the application requirements.
Our engineering team evaluates key factors including:
- Vehicle model and application purpose
- Bonnet weight and size
- Installation position and available mounting space
- Required opening angle
- Operating environment
- Expected service life requirements
Based on these parameters, we determine the appropriate gas force, stroke length and structural design to ensure the bonnet strut provides smooth lifting and reliable support.
This evaluation process helps prevent incorrect force selection and ensures the final product matches the vehicle application.
2. Engineering Design
Professional Design and Performance Optimization
After gathering the application requirements, TieYing engineers create the optimal bonnet strut design based on mechanical calculations and practical installation conditions.
The engineering process includes:
- Gas force calculation
- Cylinder and rod size selection
- Stroke length optimization
- Mounting structure design
- End fitting selection
- Installation position analysis
Through engineering optimization, we ensure the bonnet strut achieves:
- Smooth opening movement
- Stable holding performance
- Proper lifting assistance
- Long-term operational reliability
For OEM and ODM customers, we can provide customized designs according to specific vehicle requirements.
3. Production
Precision Manufacturing Process
Once the design is confirmed, production begins using controlled manufacturing procedures and professional equipment.
The main production stages include:
Tube Forming
The steel cylinder tube is processed according to required dimensions and strength specifications.
This ensures:
- Accurate cylinder size
- Reliable pressure resistance
- Consistent product performance
Rod Machining
The piston rod is precisely manufactured and processed to achieve smooth movement and durability.
Key considerations include:
- Surface accuracy
- Corrosion resistance
- Wear resistance
- Smooth operation
Assembly
Components including cylinder, piston, seals and end fittings are assembled under controlled conditions.
Proper assembly ensures:
- Reliable sealing performance
- Stable movement
- Reduced gas leakage risk
Gas Filling
High purity nitrogen gas is filled into the cylinder according to the required pressure specification.
The gas pressure is carefully controlled to achieve the correct lifting force for each application.
4. Quality Testing
Strict Inspection Before Shipment
Quality control is a critical part of TieYing manufacturing.
Before products are delivered, every production batch undergoes inspection and performance testing.
Testing procedures include:
Pressure Testing
Ensures the bonnet strut provides accurate and stable lifting force according to design requirements.
Leak Testing
Checks sealing performance to prevent gas loss and maintain long-term reliability.
Cycle Testing
Evaluates durability by simulating repeated opening and closing operations.
This confirms the gas strut can withstand continuous use in real automotive environments.
Additional inspections include:
- Dimension checking
- Appearance inspection
- Functional testing
- Mounting compatibility verification
5. Delivery
Reliable Packaging and Global Shipment Support
After passing quality inspection, finished bonnet struts are carefully prepared for shipment.
TieYing provides professional packaging solutions to protect products during international transportation and ensure they arrive in excellent condition.
Our delivery process includes:
- Product quantity verification
- Protective packaging
- Export documentation preparation
- Shipment coordination
- Customer delivery support
With flexible production capacity and international shipping experience, TieYing supports customers worldwide with reliable bonnet strut supply for OEM projects, aftermarket distribution and customized automotive applications.
From Concept to Production, TieYing Supports Your Bonnet Strut Project
Whether you require a standard replacement bonnet gas strut or a fully customized automotive gas spring solution, TieYing provides complete manufacturing support from engineering development to final delivery.
Our integrated production process helps customers achieve reliable performance, consistent quality and efficient supply for different automotive applications.
Typical Technical Specifications of Automotive Bonnet Struts
The specifications of a bonnet gas strut vary depending on vehicle design, bonnet weight, mounting position and required opening performance.
TieYing provides customized bonnet strut solutions based on specific application requirements. The following specifications represent common ranges used in automotive bonnet applications.
| Parameter | Typical Specification |
|---|---|
| Application | Automotive bonnet / hood lifting support |
| Gas Type | Nitrogen gas |
| Force Range | Customized according to bonnet weight |
| Stroke Length | Customized according to opening angle requirements |
| Extended Length | Customized according to installation space |
| Tube Diameter | Available in multiple sizes according to load requirements |
| Rod Diameter | Selected according to force and durability requirements |
| End Fittings | Ball socket, brackets, eyelets and customized connectors |
| Mounting Method | Vehicle-specific mounting solutions |
| Working Temperature | Designed for automotive operating environments |
| Surface Treatment | Corrosion-resistant coating options available |
| Service Life | Designed for repeated opening and closing cycles |
Vehicle Application Reference
| Vehicle Application | Required Features |
|---|---|
| Compact Sedan Bonnet Strut | Lightweight design, smooth opening, compact mounting |
| Mid-size SUV Bonnet Strut | Higher gas force, stronger support capability |
| Large SUV Hood Lift Support | Heavy-duty cylinder design, stable holding force |
| Pickup Truck Bonnet Gas Spring | High durability, vibration resistance |
| Electric Vehicle Front Compartment Strut | Accurate force control, lightweight solution |
For OEM Vehicle Projects, TieYing Can Customize
| Custom Item | Engineering Support |
|---|---|
| Gas Force | Calculate according to bonnet weight and installation angle |
| Stroke Length | Design according to required opening height |
| Cylinder Size | Select according to load requirement |
| Rod Diameter | Optimize for strength and durability |
| End Fittings | Develop according to vehicle mounting structure |
| Brackets | Customized design available |
Need a Bonnet Strut Designed for Your Vehicle?
Provide your vehicle model, bonnet weight, installation dimensions or existing sample. TieYing engineers can help develop the correct automotive gas spring solution for your application.
Quality Control
Every bonnet strut undergoes strict inspection before shipment, including:
✔ Gas pressure testing
✔ Dimension inspection
✔ Leakage testing
✔ Functional testing
✔ Surface quality inspection
A Manufacturing Partner Focused on Practical Cooperation
For global B2B buyers, choosing the right gas spring supplier is not only about product specifications. It is also about communication, consistency and confidence in future cooperation.
At TieYing, we focus on helping customers build workable supply relationships through honest technical discussion, manufacturing support and long term service for gas springs and related projects.
Whether you are developing a new product, expanding a distributor line or sourcing for a repeat project, we are ready to discuss your gas spring requirements.
TieYing Factory Video Verified by SGS
Competitive Advantages of TieYing Gas Springs
| Item | TieYing Gas Springs (TieYing Supplier) | Standard Gas Springs (Other Supplier) |
|---|---|---|
| Certificate | SGS 200000 Cycles Durability Test, ROHS, T16949, IS09001 | Maybe just ISO9001 |
| Material | Top seamless steel (Full inspection by Professional testing equipment) | Maybe steel |
| Oil | Anti-wear hydraulic oil from Garmany | Maybe Semi-Synthetic |
| Piston Roughness | Up to Ra 0.696um | Maybe Ra 0.4um |
| Gas spring resistance | 100°C~-40°C | Maybe 60°C |
| Gas | 99.99% nitrogen | Maybe oxygen / Impure nitrogen |
| Uselife | 80,000-200,000 cycles with SGS test report | Maybe 50,000 cycles |
| Salt spray testing | Up to 96 hours | Maybe up to 12 hours |
| Inspection | All procedure sampling inspect, complete inspect before delivery | Maybe sampling inspection |
| Defective product | Re-produce new, If reach 10%, 100% items re-produce new | Maybe Repair |
Frequently Asked Questions About Bonnet Struts
What is a bonnet strut?
A bonnet strut is a gas spring that assists vehicle hood opening and keeps the bonnet securely lifted.
What is the difference between a bonnet strut and a hood strut?
They are essentially the same component. “Bonnet strut” is commonly used in markets such as the UK and Australia, while “hood strut” is more common in North America.
Can TieYing manufacture custom bonnet struts?
Yes. We provide OEM and ODM bonnet strut solutions based on customer specifications.
How long does a bonnet gas strut last?
Service life depends on design, usage frequency and operating conditions. Properly designed gas struts can provide long term reliable performance.
How do I choose the right force for my bonnet?
Send us your bonnet weight and opening angle. Our engineers will calculate the correct F1 force and stroke for you free of charge.
Do you provide samples?
Yes. Send us a drawing or a sample and we will produce and quote matching samples for you.
Are you certified?
Can you match an original equipment part number?
Looking for a Reliable Bonnet Strut Supplier?
Whether you need replacement bonnet gas struts, OEM automotive gas springs or customized lifting solutions, TieYing provides professional manufacturing support for global customers.
