The Race Tech Shock Spring 5.4 kg/mm is a high-performance suspension spring designed for select motocross applications. Manufactured by Race Tech and identified by manufacturer part number SRSP 652654 and vendor part number 201-652654, this spring delivers a strong stiffness-to-mass ratio for dependable suspension performance without unnecessary weight. Its precision construction supports accurate spring-rate selection and consistent operation under demanding riding conditions.
Designed for fitment on 2010–2015 Honda CRF450R, 2013–2014 Kawasaki KX450F, and 2014–2015 Yamaha YZ450F models, the spring is intended for rear shock applications requiring a 5.4 kg/mm rate. Confirm the exact motorcycle model, year, shock configuration, and required spring rate before installation. Race Tech recommends using its spring-rate selection guidance at RaceTech.com to determine the proper rate for the rider and riding conditions.
Race Tech produces its high-performance springs using carefully selected materials and controlled manufacturing processes. The result is a lightweight, durable component engineered to maintain reliable suspension response during motocross and off-road use. Professional installation or inspection is recommended to ensure correct fitment, preload adjustment, and safe suspension operation.
Features:
- High-performance Race Tech shock spring with a 5.4 kg/mm spring rate
- Precision-manufactured design with a high stiffness-to-mass ratio
- Lightweight construction engineered for dependable suspension performance
- Fits 2010–2015 Honda CRF450R models
- Fits 2013–2014 Kawasaki KX450F models
- Fits 2014–2015 Yamaha YZ450F models
- Manufacturer: Race Tech
- Manufacturer part number: SRSP 652654
- Vendor part number: 201-652654
- Use Race Tech spring-rate guidance to confirm the correct application
Fitment:
2005 Suzuki DR-Z400E CA Model
2005 Suzuki DR-Z400E Non CA Model
2005 Yamaha YZ250
2006 Kawasaki KX450F
2006 Suzuki DR-Z400E CA Model
2006 Suzuki DR-Z400E Non CA Model
2006 Yamaha WR450F
2007 Suzuki DR-Z400E CA Model
2007 Suzuki DR-Z400E Non CA Model
2007 Yamaha WR450F
2008 KTM 505 Sx-F
2008 Yamaha WR450F
2009 KTM 505 Sx-F
2009 Yamaha WR450F
2010 Honda CRF450R
2010 Yamaha WR450F
2011 Honda CRF450R
2011 Yamaha WR450F
2012 Honda CRF450R
2013 Honda CRF450R
2013 Kawasaki KX450F
2014 Honda CRF450R
2014 Kawasaki KX450F
2014 KTM 250 XC
2014 Sherco 250 SE-R Racing
2014 Sherco 250 SEF-R Racing
2014 Sherco 300 SE-R Racing
2014 Sherco 300 SEF-R Racing
2014 Yamaha YZ450F
2015 Honda CRF450R
2015 Kawasaki KX450F
2015 KTM 250 XC
2015 Sherco 250 SE-R Racing
2015 Sherco 250 SEF-R Racing
2015 Sherco 300 SE-R Racing
2015 Sherco 300 SEF-R Racing
2015 Sherco 450 SEF-R Racing
2015 Yamaha YZ450F
2016 Honda CRF450R
2016 Kawasaki KX450F
2016 KTM 250 XC
2016 Sherco 450 SEF-R Racing
2016 Yamaha YZ450F
2017 Honda CRF450R
2017 Honda CRF450RX
2017 Kawasaki KX450F
2017 Sherco 250 SC-F Cross Country
2017 Sherco 300 SC-F Cross Country
2017 Yamaha WR450F
2017 Yamaha YZ450F
2018 Honda CRF450R
2018 Honda CRF450RX
2018 Kawasaki KX450F
2018 Sherco 125 SE-R Factory
2018 Sherco 125 SE-R Racing
2018 Yamaha WR450F
2018 Yamaha YZ450F
2019 Sherco 500 SEF-R Factory
2019 Suzuki RM-Z250
2019 Yamaha WR450F
2019 Yamaha YZ450F
2019 Yamaha YZ450FX
2020 Sherco 500 SEF-R Factory
2020 Sherco 500 SEF-R Racing
2020 Suzuki RM-Z250
2020 Yamaha WR450F
2020 Yamaha YZ250FX
2020 Yamaha YZ450F
2020 Yamaha YZ450FX
2021 Kawasaki KX250X
2021 Kawasaki KX450X
2021 Sherco 500 SEF-R Factory
2021 Sherco 500 SEF-R Racing
2021 Suzuki RM-Z250
2021 Yamaha WR450F
2021 Yamaha YZ250FX
2021 Yamaha YZ450F
2021 Yamaha YZ450FX
2022 Kawasaki KX250X
2022 Kawasaki KX450X
2022 Sherco 500 SEF-R Factory
2022 Suzuki RM-Z250
2022 Yamaha WR450F
2022 Yamaha YZ250FX
2022 Yamaha YZ450F
2022 Yamaha YZ450FX
2023 Kawasaki KX250X
2023 Kawasaki KX450X
2023 Sherco 500 SEF-R Factory
2023 Suzuki RM-Z250
2023 Yamaha WR450F
2023 Yamaha YZ250FX
2023 Yamaha YZ450F
2023 Yamaha YZ450FX
2024 Kawasaki KX250X
2024 Kawasaki KX450X
2024 Suzuki RM-Z250
2024 Yamaha WR450F
2024 Yamaha YZ250F
2024 Yamaha YZ250FX
2024 Yamaha YZ450F
2024 Yamaha YZ450FX