The Race Tech Shock Spring 5.8 kg/mm is a precision-engineered suspension component designed to provide consistent performance for select Yamaha motocross and off-road motorcycles. Manufactured by Race Tech, this high-performance spring offers a high stiffness-to-mass ratio, delivering the required spring rate while keeping weight low. The spring is built using carefully selected materials and controlled manufacturing processes for dependable performance under demanding riding conditions.
Designed for suspension tuning and replacement applications, the Race Tech SRSP 652858 spring helps riders match rear shock performance to their riding style, motorcycle setup, and operating conditions. Proper spring-rate selection is essential for achieving the correct sag and suspension balance; consult Race Tech’s spring-rate resources before installation to confirm that the 5.8 kg/mm rate is appropriate for your application.
Fitment includes 2015–2019 Yamaha YZ250FX models, 2016–2019 Yamaha YZ450FX models, the 2005 Yamaha YZ450F, and the 2024 Yamaha YZ450FX. Verify the motorcycle year, model, and suspension requirements before ordering. This product is manufactured by Race Tech and is identified by manufacturer part number SRSP 652858 and vendor part number 201-652858.
Features:
- Spring Rate: 5.8 kg/mm for rear shock suspension tuning
- High-Performance Construction: Race Tech precision spring designed for a high stiffness-to-mass ratio
- Lightweight Design: Provides the intended spring rate with reduced weight compared with conventional spring construction
- Application: Replacement or suspension-tuning shock spring for select Yamaha YZ250FX, YZ450FX, and YZ450F motorcycles
- Fitment: Fits 2015–2019 Yamaha YZ250FX, 2016–2019 Yamaha YZ450FX, 2005 Yamaha YZ450F, and 2024 Yamaha YZ450FX
- Manufacturer Part Number: Race Tech SRSP 652858
- Vendor Part Number: 201-652858
Fitment:
2005 Yamaha YZ450F
2015 Yamaha YZ250FX
2016 Yamaha YZ250FX
2016 Yamaha YZ450FX
2017 Yamaha YZ250FX
2017 Yamaha YZ450FX
2018 Yamaha YZ250FX
2018 Yamaha YZ450FX
2019 Yamaha YZ250FX
2024 Yamaha YZ450FX