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A13-2902011
HongPro
A13-2902011
Engineered for durability and performance, our replacement coil springs are precision-manufactured to meet or exceed strict OE specifications. Crafted from high-carbon steel with a robust anti-corrosion coating, they are rigorously tested to withstand over 200,000 cycles of compression and rebound, ensuring long-term reliability under diverse driving conditions.
Backed by over a decade of specialization in the automotive suspension sector, our springs are designed to restore original vehicle height, optimize road handling, and ensure even tire wear. Each batch undergoes stringent quality control, certified to international standards like ISO 9001, guaranteeing consistent performance and a perfect fit for a smooth, safe ride.
Our springs are forged from high-carbon 55Cr3 spring steel, a material chosen for its exceptional yield strength and fatigue resistance. This is complemented by a multi-stage protection system. Each spring undergoes shot peening to create a compressive stress layer, significantly enhancing its service life. Finally, it is coated with a thick, epoxy-powder layer, successfully passing over 250 hours of salt spray testing (ASTM B117 standard). This ensures superior resistance to rust and corrosion, even in harsh winter or coastal environments, guaranteeing structural integrity and a pristine appearance for years.
We leverage advanced CAD engineering and 3D scanning of original components to achieve a perfect OE match. Our commitment to precision means every coil spring is designed as a direct OEM replacement, ensuring guaranteed compatibility and hassle-free installation. This eliminates the risks associated with poor-fitting aftermarket parts, such as unusual tire wear or compromised handling. You can be confident that our spring will restore your Chery's original geometry, providing a seamless and reliable solution for both professional mechanics and DIY installers.
Trust is built on proven performance. Every batch of our coil springs is subjected to a brutal fatigue test, enduring over 200,000 cycles of continuous compression and rebound on a servo-hydraulic test rig. This simulates years of aggressive driving and extreme road conditions, far exceeding standard industry cycles. This data-driven approach validates our claims of superior durability and long-term reliability, ensuring the spring maintains its optimal height and spring rate throughout its extended lifespan, providing a consistently stable and safe ride.
Our entire manufacturing process, from raw material sourcing to final packaging, is certified under the ISO 9001 Quality Management System. This international standard is your assurance of consistent, high-quality production. Every coil spring passes through multiple quality checkpoints, including dimensional accuracy, load-deflection curve verification, and visual inspection. This systematic control eliminates defects and ensures that every unit you receive delivers the same premium performance and perfect fit, batch after batch.
The core function of our coil spring is to enhance your driving experience. By precisely restoring the vehicle's original ride height and geometry, it ensures optimal alignment and even tire contact. This translates directly to improved road handling, sharper cornering stability, and more effective braking. Furthermore, our precisely calibrated spring rate is engineered to absorb road imperfections effectively, providing a smoother, more comfortable ride for all passengers without sacrificing the responsive feel that drivers expect.
| Specification Category | Detailed Parameter | Standard / Value |
| Material & Metallurgy | Spring Steel Grade | 55Cr3 (AISI 9254 Equivalent) |
| Hardness (HRC) | 44 - 48 | |
| Ultimate Tensile Strength | ≥ 1600 MPa | |
| Physical Dimensions | Wire Diameter | Varies by application: 12.5mm - 16.0mm |
| Outer Diameter | Varies by application: 130mm - 160mm | |
| Free Height | Varies by application: 300mm - 450mm | |
| Total Number of Active Coils | Varies by application | |
| Performance & Load Testing | Load at Deflection (Precise kN) | Precisely calibrated to OE load-deflection curve |
| Spring Rate (Linear) | Designed to OE specification (N/mm) | |
| Sag Resistance | Maintains >95% of design height after 200,000 cycles | |
| Surface Treatment & Protection | Corrosion Protection | Epoxy-Powder Coating, 60-80 μm |
| Salt Spray Test Resistance | > 250 hours (ASTM B117 Standard) | |
| Internal Stress Relief | Shot Peening (SAE J443 standard) | |
| Quality & Certification | Manufacturing Standard | ISO 9001:2015 Certified |
| Quality Control | 100% Dimensional & Load Sample Testing | |
| Fatigue Life Cycle Test | > 200,000 cycles (Simulated severe road conditions) |
Here are specific application scenarios of Coil Spring:
Over time, factory springs can sag due to metal fatigue, leading to an uneven ride height and misaligned headlights. Our direct replacement springs are designed to precisely restore the original vehicle height and suspension geometry. This corrects the compromised stance, ensures proper wheel alignment, and reinstates optimal headlight aim. It's the definitive solution for vehicles exhibiting a noticeable lean or that have settled lower than their intended design, bringing them back to factory specifications for safety and performance.
When the factory suspension becomes worn, drivers often experience a harsh ride, excessive body roll in corners, and a general lack of stability. Our precision-engineered coil springs are calibrated to restore the vehicle's original spring rate and damping characteristics. This directly translates to a smoother ride over bumps, reduced body lean during turns, and more confident, stable handling at higher speeds. This application is crucial for replacing aged components that have degraded the driving experience, ensuring both comfort and control are regained.
A compromised coil spring is a direct safety concern. A sagging or broken spring can negatively impact vehicle stability, braking efficiency, and overall control. Our springs, rigorously tested to withstand over 200,000 load cycles, provide a reliable and durable solution to mitigate these risks. By maintaining correct vehicle height and ensuring even tire contact with the road, they play a vital role in preserving the effectiveness of the Anti-lock Braking System (ABS) and electronic stability control, contributing directly to safer vehicle operation.
In collision repair or after the natural wear of high mileage, our coil springs serve as the trusted OE-grade component for professional garage and workshop installations. They guarantee a perfect fit and restored performance, ensuring the vehicle is returned to its pre-accident or like-new condition. For fleet managers and repair shops, this means a reliable, consistent part that streamlines the repair process, reduces comebacks, and ensures customer satisfaction by delivering long-lasting, dependable results.
For optimal safety and performance, we strongly recommend professional installation. Before starting, always consult the vehicle's service manual and wear protective gear. Ensure the vehicle is securely lifted and supported on jack stands. Use a high-quality spring compressor tool that meets safety standards - never attempt to install without it. When replacing, carefully transfer all related components. After installation, torque all bolts to the manufacturer's specified values and perform a wheel alignment to ensure perfect handling and even tire wear. Our springs, ISO-certified for consistent quality, are designed for a precise fit, guaranteeing a smooth and safe ride.
