The Race Tech SRSP 652663 Shock Spring is a high-performance suspension component designed for riders who require precise spring performance and consistent handling. With a 6.3 kg/mm spring rate, this coil spring is engineered for use in select motorcycle rear shock applications and is manufactured to deliver a high stiffness-to-mass ratio. Its lightweight construction helps reduce unnecessary suspension weight while maintaining the required spring rate for demanding street, off-road, and competition riding.
Race Tech uses carefully selected materials and controlled manufacturing processes to produce springs with dependable rate consistency and long-term durability. The SRSP 652663 is intended for suspension setups where accurate spring selection is essential for achieving proper sag, ride height, traction, and chassis balance. Always verify the appropriate spring rate for the rider, motorcycle, riding style, and suspension configuration through Race Tech before installation.
This Race Tech shock spring fits select 2019 Yamaha YZ450F, 2019 Yamaha YZ450FX, 2019 Yamaha WR450F, and 2019 Suzuki RM-Z250 applications. It also fits 2010–2015 Honda CRF450R models, including the 2010, 2011, 2012, 2013, 2014, and 2015 model years. Confirm the motorcycle model, year, shock configuration, and required spring rate before purchase. The manufacturer part number and vendor part number are both SRSP 652663.
Features:
- 6.3 kg/mm spring rate for select motorcycle rear shock applications
- High stiffness-to-mass ratio supports lightweight, responsive suspension performance
- Precision-manufactured by Race Tech using high-quality materials and controlled processing
- Helps support consistent sag, ride height, traction, and chassis balance when properly selected
- Fits select 2019 Yamaha YZ450F, YZ450FX, and WR450F models
- Fits select 2019 Suzuki RM-Z250 models
- Fits 2010–2015 Honda CRF450R models
- Manufacturer part number: SRSP 652663
- Vendor part number: SRSP 652663
- Verify the proper spring rate at Race Tech before installation
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