The ALL BALLS Brake Caliper Piston Kit, manufacturer part number 18-9045 and vendor part number 18-9045, is designed to rebuild one brake caliper on select 2019–2020 Honda CRF motorcycles. This replacement kit is precision machined from high-grade 304 stainless steel to provide reliable performance and improved resistance to corrosion compared with original chrome-plated steel or aluminum pistons.
Stainless steel construction helps reduce thermal conductivity by up to 93% compared with aluminum, helping limit heat transfer to brake fluid during demanding riding conditions. The kit also replaces failure-prone plastic composite pistons that may become brittle with age, as well as ceramic inserts used in some KTM applications. Each kit includes the piston or pistons required to rebuild one caliper, helping restore proper brake system function during maintenance or repair.
Fitment includes the 2019 Honda CRF450R, CRF450RX, CRF450X, CRF450R W.E., CRF250R, and CRF250RX, along with the 2020 Honda CRF450R, CRF450R W.E., CRF450RX, and CRF450X. Verify the motorcycle model and caliper application before installation. The ALL BALLS 18-9045 Brake Caliper Piston Kit is a practical replacement solution for riders and technicians servicing compatible Honda CRF braking systems.
Features:
- Precision machined from high-grade 304 stainless steel
- Reduces thermal conductivity by up to 93% compared with aluminum
- Replaces plastic composite pistons that can become brittle with age
- Replaces corrosion-prone OEM 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 brake caliper
- Fits select 2019–2020 Honda CRF250R, CRF250RX, CRF450R, CRF450R W.E., CRF450RX, and CRF450X models
Fitment:
2019 Honda CRF250R
2019 Honda CRF250RX
2019 Honda CRF450R
2019 Honda CRF450R W.E.
2019 Honda CRF450RX
2019 Honda CRF450X
2020 Honda CRF250R
2020 Honda CRF250RX
2020 Honda CRF450R
2020 Honda CRF450R W.E.
2020 Honda CRF450RX
2020 Honda CRF450X
2021 Honda CRF250R
2021 Honda CRF250RX
2021 Honda CRF450R
2021 Honda CRF450R W.E.
2021 Honda CRF450RX
2021 Honda CRF450X
2022 Honda CRF250R
2022 Honda CRF250RX
2022 Honda CRF450R
2022 Honda CRF450R W.E.
2022 Honda CRF450R-S
2022 Honda CRF450RX
2022 Honda CRF450X
2023 Honda CRF250R
2023 Honda CRF250RX
2023 Honda CRF450R
2023 Honda CRF450R W.E.
2023 Honda CRF450R-S
2023 Honda CRF450RX
2023 Honda CRF450X
2024 Honda CRF250R
2024 Honda CRF250RX
2024 Honda CRF450R
2024 Honda CRF450R W.E.
2024 Honda CRF450R-S
2024 Honda CRF450RX
2024 Honda CRF450X
2025 Honda CRF450X
2026 Honda CRF450X