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The chain and sprocket kits for motorcycles uses a combination of SCM420 chrome-molybdenum steel front teeth and C45 high-carbon steel rear teeth with a low-friction X-Ring sealed chain. Through the high-frequency quenching process, the tooth surface hardness reaches HRC 60, which improves the wear resistance by 40% compared with ordinary kits, ensuring that retail end users do not need to replace within 25,000 kilometers, greatly reducing the after-sales repair rate, and having large-scale supply capacity.
SCM420/C45 steel
Material standard
HRC 55-60
Heat treatment hardness
≥ 38.5 kN
Chain tensile strength
The front sprocket is made of JIS standard SCM420 chromium molybdenum alloy steel, and the rear sprocket is made of C45 high carbon steel. This material combination ensures impact resistance under high torque, so that the overall yield strength of the gear exceeds 650 MPa, eliminating the risk of tooth breakage during intense driving.
Through the unique high-frequency induction heating treatment, the hardness of the sprocket tooth tip is accurately controlled at HRC 55-60, and the depth of the hardened layer is kept between 0.3mm and 0.5mm. This process not only retains the toughness of the tooth root, but also extends the wear resistance life of the tooth surface by more than 2 times.
The chain in the kit uses an advanced X-Ring four-point seal design. Compared with the traditional O-Ring, the contact area of the X-Ring is reduced by 40%, which effectively reduces the transmission resistance, and increases the retention time of the sealing lubricant by 50%, which significantly prolongs the service life of the chain.
All sprockets are processed by CNC hobbing machine, and the tooth profile tolerance is controlled within ± 0.1mm. This high-precision meshing design reduces the “impact effect” between the chain and the gear, reducing the transmission noise at high speeds by 5 decibels, providing a smoother riding experience.
The chain is pre-stretched with 30% breaking load before leaving the factory, which eliminates the initial elongation and reduces the initial adjustment frequency after installation by the user. The pin shaft and roller are shot peened, and the surface fatigue strength is increased by 30%, which effectively resists repeated tensile load.
The surface of the rear sprocket was either electrophoretically black or galvanized and passed the 72 hour neutral salt spray test (NSS). Even if it is used in wet, muddy or coastal saline environment, it can prevent rust and corrosion and ensure the appearance and performance of the storage period and the use period are intact.
| Parameter | Specification |
| Product Name | Chain and Sprocket Kits for Motorcycles |
| Front Sprocket Material | SCM420 Chromoly Steel (Case Hardened) |
| Rear Sprocket Material | C45 High Carbon Steel (Heat Treated) |
| Chain Type | 520 / 525 / 530 Series (X-Ring / O-Ring Sealed) |
| Hardness (Teeth) | HRC 55 – 60 (Induction Hardening) |
| Tensile Strength | 520: ~38.5 kN / 525: ~40.0 kN / 530: ~46.0 kN |
| Manufacturing Tolerance | ISO 9001 Standard, ±0.1mm concentricity |
| Surface Treatment | Zinc Plating, Black Electrophoresis, Induction Hardening |
| Compatibility | Fits Honda, Yamaha, Kawasaki, Suzuki (Specific Models) |
| Fatigue Resistance | Tested to 10,000,000 cycles |
Compared with ordinary A3 steel or cheap kits without heat treatment on the market, this chain and sprocket kits for motorcycles has achieved OEM-level durability through material upgrading and precision processing. Our products are focused on solving the following common industry pain points:
In view of the problem that the ordinary chain becomes loose rapidly within 500 kilometers after installation and needs to be adjusted repeatedly, we control the initial elongation below 0.05 through the “pre-stretching process” and the pin shaft full circumference riveting technology before leaving the factory, thus greatly reducing the maintenance frequency of end users.
In view of the chain runout and noisy noise caused by low-precision gears, we use CNC milling tooth profile with a tolerance of ± 0.1mm to ensure that the chain roller and the tooth groove fit perfectly. This not only eliminates the transmission noise, but also avoids the phenomenon of sprocket teeth chipping caused by gap impact.
In view of the problem that the inferior rubber sealing ring is easy to age and fracture, which leads to the loss of grease, we use the hydrogenated nitrile rubber (HNBR) material X-Ring with high temperature resistance and chemical corrosion resistance. Even under sediment and high temperature conditions, it can prevent sand and dust from invading the pin shaft and prevent the chain from rusting and sticking.
For users who use motorcycles at high frequencies every day, this chain and sprocket kits for motorcycles provides extremely high wear resistance and low maintenance characteristics. The X-Ring long-lasting lubrication design means that users do not need to oil frequently, which is very suitable for commuters who are looking for peace of mind and economy.
For users of long-distance cross-provincial or cross-border cycling, the high tensile strength of SCM420 steel ensures that the transmission system remains stable and reliable even when fully loaded with luggage. The salt spray tested anti-rust coating can cope with rain and muddy environment during the journey.
For sporty owners who like aggressive driving, precise gear meshing reduces energy loss during power transmission. The high-hardness tooth tip design can withstand the instantaneous high-torque impact brought by rapid acceleration and downshifting and oil replenishment, ensuring power on call.
For users who often drive in sand and mud, the sprocket designed for the mud discharge groove is matched with the X-Ring chain with excellent sealing performance, which can effectively discharge the embedded sand, prevent abrasive wear, and still maintain the transmission system under harsh working conditions. Integrity.
We provide retailers with complete model adaptation database support to ensure accurate product selection. All kits offer a 12-month or 20,000km quality guarantee. In case of quality problems such as fracture and tooth removal due to non-human factors, we will provide 1:1 free replacement service.
Under the premise of normal maintenance (clean lubrication every 500-800 kilometers) and correct installation tension, the chain and sprocket kits for motorcycles have an expected service life of 20,000 to 30,000 kilometers. It is recommended to use a professional torque wrench lock nut during installation, and ensure that the front and rear gears are on the same horizontal line to avoid eccentric wear.
certificate
Welcome to our Frequently Asked Questions page. We have compiled answers to common questions you may have, hoping to provide you with clear and quick solutions. If you cannot find the information you need here, please feel free to contact our customer support team.
The chain and sprocket kits for motorcycles uses a combination of SCM420 chrome-molybdenum steel front teeth and C45 high-carbon steel rear teeth with a low-friction X-Ring sealed chain. Through the high-frequency quenching process, the tooth surface hardness reaches HRC 60, which improves the wear resistance by 40% compared with ordinary kits, ensuring that retail end users do not need to replace within 25,000 kilometers, greatly reducing the after-sales repair rate, and having large-scale supply capacity.
Material standard
SCM420/C45 steel
Heat treatment hardness
HRC 55-60
Chain tensile strength
≥ 38.5 kN
The front sprocket is made of JIS standard SCM420 chromium molybdenum alloy steel, and the rear sprocket is made of C45 high carbon steel. This material combination ensures impact resistance under high torque, so that the overall yield strength of the gear exceeds 650 MPa, eliminating the risk of tooth breakage during intense driving.
Through the unique high-frequency induction heating treatment, the hardness of the sprocket tooth tip is accurately controlled at HRC 55-60, and the depth of the hardened layer is kept between 0.3mm and 0.5mm. This process not only retains the toughness of the tooth root, but also extends the wear resistance life of the tooth surface by more than 2 times.
The chain in the kit uses an advanced X-Ring four-point seal design. Compared with the traditional O-Ring, the contact area of the X-Ring is reduced by 40%, which effectively reduces the transmission resistance, and increases the retention time of the sealing lubricant by 50%, which significantly prolongs the service life of the chain.
All sprockets are processed by CNC hobbing machine, and the tooth profile tolerance is controlled within ± 0.1mm. This high-precision meshing design reduces the “impact effect” between the chain and the gear, reducing the transmission noise at high speeds by 5 decibels, providing a smoother riding experience.
The chain is pre-stretched with 30% breaking load before leaving the factory, which eliminates the initial elongation and reduces the initial adjustment frequency after installation by the user. The pin shaft and roller are shot peened, and the surface fatigue strength is increased by 30%, which effectively resists repeated tensile load.
The surface of the rear sprocket was either electrophoretically black or galvanized and passed the 72 hour neutral salt spray test (NSS). Even if it is used in wet, muddy or coastal saline environment, it can prevent rust and corrosion and ensure the appearance and performance of the storage period and the use period are intact.
| Parameter | Specification |
| Product Name | Chain and Sprocket Kits for Motorcycles |
| Front Sprocket Material | SCM420 Chromoly Steel (Case Hardened) |
| Rear Sprocket Material | C45 High Carbon Steel (Heat Treated) |
| Chain Type | 520 / 525 / 530 Series (X-Ring / O-Ring Sealed) |
| Hardness (Teeth) | HRC 55 – 60 (Induction Hardening) |
| Tensile Strength | 520: ~38.5 kN / 525: ~40.0 kN / 530: ~46.0 kN |
| Manufacturing Tolerance | ISO 9001 Standard, ±0.1mm concentricity |
| Surface Treatment | Zinc Plating, Black Electrophoresis, Induction Hardening |
| Compatibility | Fits Honda, Yamaha, Kawasaki, Suzuki (Specific Models) |
| Fatigue Resistance | Tested to 10,000,000 cycles |
In view of the problem that the ordinary chain becomes loose rapidly within 500 kilometers after installation and needs to be adjusted repeatedly, we control the initial elongation below 0.05 through the “pre-stretching process” and the pin shaft full circumference riveting technology before leaving the factory, thus greatly reducing the maintenance frequency of end users.
In view of the chain runout and noisy noise caused by low-precision gears, we use CNC milling tooth profile with a tolerance of ± 0.1mm to ensure that the chain roller and the tooth groove fit perfectly. This not only eliminates the transmission noise, but also avoids the phenomenon of sprocket teeth chipping caused by gap impact.
In view of the problem that the inferior rubber sealing ring is easy to age and fracture, which leads to the loss of grease, we use the hydrogenated nitrile rubber (HNBR) material X-Ring with high temperature resistance and chemical corrosion resistance. Even under sediment and high temperature conditions, it can prevent sand and dust from invading the pin shaft and prevent the chain from rusting and sticking.
For users who use motorcycles at high frequencies every day, this chain and sprocket kits for motorcycles provides extremely high wear resistance and low maintenance characteristics. The X-Ring long-lasting lubrication design means that users do not need to oil frequently, which is very suitable for commuters who are looking for peace of mind and economy.
For users of long-distance cross-provincial or cross-border cycling, the high tensile strength of SCM420 steel ensures that the transmission system remains stable and reliable even when fully loaded with luggage. The salt spray tested anti-rust coating can cope with rain and muddy environment during the journey.
For sporty owners who like aggressive driving, precise gear meshing reduces energy loss during power transmission. The high-hardness tooth tip design can withstand the instantaneous high-torque impact brought by rapid acceleration and downshifting and oil replenishment, ensuring power on call.
For users who often drive in sand and mud, the sprocket designed for the mud discharge groove is matched with the X-Ring chain with excellent sealing performance, which can effectively discharge the embedded sand, prevent abrasive wear, and still maintain the transmission system under harsh working conditions. Integrity.
