Restore dependable braking performance with the All Balls Brake Caliper Piston Kit, manufacturer part number 18-9008 and vendor part number 21-89008. This rebuild kit is precision machined from high-grade 304 stainless steel to provide a durable replacement for worn or damaged caliper pistons. It is designed for one brake caliper and provides a practical solution when original pistons are corroded, brittle, or otherwise unsuitable for continued use.
Feature: Stainless steel construction reduces thermal conductivity by up to 93% compared with aluminum, helping limit heat transfer within the braking system. Plastic composite pistons can become brittle with age, while OEM chrome-plated steel and aluminum pistons may be susceptible to corrosion. This All Balls kit also eliminates the failure-prone ceramic inserts used on some KTM applications.
Fitment includes 2015–2017 Yamaha YZ250FX, 2016–2017 Yamaha YZ250X, 2016–2017 Yamaha YZ450FX, and 1997–1999 Kawasaki KX250 models. Verify the motorcycle model, year, and caliper application before installation. The kit includes the piston or pistons required to rebuild one caliper, making it suitable for targeted brake-system service during routine maintenance or caliper restoration.
Features:
- Precision machined from high-grade 304 stainless steel
- Reduces thermal conductivity by up to 93% compared with aluminum
- Resists the brittleness associated with aging plastic composite pistons
- Helps prevent corrosion concerns common with chrome-plated steel and aluminum pistons
- Eliminates failure-prone ceramic inserts found on some KTM models
- Includes the piston or pistons needed to rebuild one caliper
- Fits select Yamaha YZ250FX, YZ250X, YZ450FX, and Kawasaki KX250 models
Fitment:
1997 Kawasaki KX125
1997 Kawasaki KX250
1998 Kawasaki KX125
1998 Kawasaki KX250
1999 Kawasaki KX125
1999 Kawasaki KX250
2000 Kawasaki KX125
2000 Kawasaki KX250
2007 Yamaha YZ250F
2008 Yamaha YZ125
2008 Yamaha YZ250
2008 Yamaha YZ250F
2008 Yamaha YZ450F
2009 Yamaha YZ125
2009 Yamaha YZ250
2009 Yamaha YZ250F
2009 Yamaha YZ450F
2010 Yamaha YZ125
2010 Yamaha YZ250
2010 Yamaha YZ250F
2010 Yamaha YZ450F
2011 Yamaha YZ125
2011 Yamaha YZ250
2011 Yamaha YZ250F
2011 Yamaha YZ450F
2012 Yamaha YZ125
2012 Yamaha YZ250
2012 Yamaha YZ250F
2012 Yamaha YZ450F
2013 Yamaha YZ125
2013 Yamaha YZ250
2013 Yamaha YZ250F
2013 Yamaha YZ450F
2014 Yamaha YZ125
2014 Yamaha YZ250
2014 Yamaha YZ250F
2014 Yamaha YZ450F
2015 Yamaha WR250F
2015 Yamaha YZ125
2015 Yamaha YZ250
2015 Yamaha YZ250F
2015 Yamaha YZ250FX
2015 Yamaha YZ450F
2016 Yamaha WR250F
2016 Yamaha WR450F
2016 Yamaha YZ125
2016 Yamaha YZ250
2016 Yamaha YZ250F
2016 Yamaha YZ250FX
2016 Yamaha YZ250X
2016 Yamaha YZ450F
2016 Yamaha YZ450FX
2017 Yamaha WR250F
2017 Yamaha WR450F
2017 Yamaha YZ125
2017 Yamaha YZ250
2017 Yamaha YZ250F
2017 Yamaha YZ250FX
2017 Yamaha YZ250X
2017 Yamaha YZ450F
2017 Yamaha YZ450FX
2018 Yamaha WR250F
2018 Yamaha WR450F
2018 Yamaha YZ125
2018 Yamaha YZ250
2018 Yamaha YZ250F
2018 Yamaha YZ250FX
2018 Yamaha YZ250X
2018 Yamaha YZ450F
2018 Yamaha YZ450FX
2019 Yamaha WR250F
2019 Yamaha WR450F
2019 Yamaha YZ125
2019 Yamaha YZ250
2019 Yamaha YZ250F
2019 Yamaha YZ250FX
2019 Yamaha YZ250X
2019 Yamaha YZ450F
2019 Yamaha YZ450FX
2020 Yamaha WR250F
2020 Yamaha WR450F
2020 Yamaha YZ125
2020 Yamaha YZ125X
2020 Yamaha YZ250
2020 Yamaha YZ250F
2020 Yamaha YZ250FX
2020 Yamaha YZ250X
2020 Yamaha YZ450FX
2021 Yamaha WR250F
2021 Yamaha YZ125
2021 Yamaha YZ125X
2021 Yamaha YZ250
2021 Yamaha YZ250F
2021 Yamaha YZ250FX
2021 Yamaha YZ250X
2022 Yamaha YZ125X
2022 Yamaha YZ250X