Restore reliable brake caliper performance with the ALL BALLS Caliper Piston Kit, manufacturer part number 18-9050 and vendor part number 21-89050. This precision-machined rebuild kit is designed for compatible Polaris RZR models and provides the piston or pistons needed to rebuild one caliper. It is an effective replacement for worn, corroded, or damaged original components.
Manufactured from high-grade 304 stainless steel, the ALL BALLS piston is engineered to reduce thermal conductivity by up to 93% compared with aluminum. Stainless steel construction also helps address common issues associated with plastic composite pistons, which may become brittle with age, as well as OEM chrome-plated steel and aluminum pistons that can be prone to corrosion. The kit also eliminates failure-prone ceramic inserts found on some KTM applications.
Fitment includes the 2021 Polaris RZR Turbo S 4 and RZR Turbo S 4 Velocity; 2022 Polaris RZR Turbo R Sport, Turbo R Premium, Turbo R Ultimate, Turbo R 4 Sport, Turbo R 4 Premium, and Turbo R 4 Ultimate; and 2023 Polaris RZR Turbo R 4 Premium and Turbo R 4 Sport. Verify the vehicle model and caliper application before installation. This ALL BALLS rebuild component is intended for brake system service by a qualified installer.
Features:
- Precision machined from high-grade 304 stainless steel
- Reduces thermal conductivity by up to 93% compared with aluminum
- Helps replace plastic composite pistons that may become brittle with age
- Resists corrosion concerns associated with chrome-plated steel and aluminum pistons
- Eliminates failure-prone ceramic inserts found on some KTM models
- Includes the piston or pistons required to rebuild one caliper
- Fits select 2021-2023 Polaris RZR Turbo S and Turbo R models
Fitment:
2021 Polaris RZR Turbo S 4
2021 Polaris RZR Turbo S 4 Velocity
2022 Polaris RZR Turbo R 4 Premium
2022 Polaris RZR Turbo R 4 Sport
2022 Polaris RZR Turbo R 4 Ultimate
2022 Polaris RZR Turbo R Premium
2022 Polaris RZR Turbo R Sport
2022 Polaris RZR Turbo R Ultimate
2023 Polaris RZR Pro R Premium
2023 Polaris RZR Pro R Ultimate
2023 Polaris RZR Turbo R 4 Premium
2023 Polaris RZR Turbo R 4 Sport
2023 Polaris RZR Turbo R 4 Ultimate
2023 Polaris RZR Turbo R Premium
2023 Polaris RZR Turbo R Sport
2023 Polaris RZR Turbo R Ultimate
2024 Polaris RZR Pro R Premium
2024 Polaris RZR Pro R Ultimate
2024 Polaris RZR Turbo R 4 Sport
2024 Polaris RZR Turbo R Premium
2024 Polaris RZR Turbo R Sport
2024 Polaris RZR Turbo R Ultimate
2025 Polaris RZR Pro R Factory-Armored Edition
2025 Polaris RZR Pro R Race Replica Edition
2025 Polaris RZR Pro R Sport
2025 Polaris RZR Pro R Ultimate
2025 Polaris RZR Pro S Premium
2025 Polaris RZR Pro S Sport
2025 Polaris RZR Pro S Ultimate