All Balls Racing Ranger Midsize Rear Caliper Piston Kit (2004-2026)

The All Balls Racing rear stainless brake caliper piston kit for the Polaris Ranger Midsize, Ranger and Ranger 500 replaces worn factory parts to cure sticking calipers, leaking seals and weak brakes. It is built to All Balls' application data as a direct replacement, so it goes back in where the original came out and restores firm, consistent braking.

Searching for Polaris Ranger midsize rear caliper piston, Polaris Ranger midsize caliper pistons or Polaris Ranger midsize brake caliper piston kit? Use the exact-model fitment list below to confirm this kit matches your machine.

Kit contents per All Balls: caliper piston x1.

Key Features

• Upgrades OEM steel, composite or aluminum pistons to 304 stainless steel, per All Balls
• Eliminates OEM ceramic inserts that can crack under heavy load and high heat
• 304 stainless resists the corrosion found on chrome-plated pistons and will not turn brittle like composite pistons
• Stainless steel conducts up to 90% less heat than aluminum, sending less heat into the caliper and fluid, per All Balls

Built To Solve: Worn Polaris Ranger Midsize, Ranger and Ranger 500 Rear Stainless Brake Caliper Piston Kit Problems

• Corroded, pitted or sticking caliper pistons
• Brittle composite pistons that crack
• Heat fade from pistons that pass heat to the fluid
• Repeat sticking after seal-only rebuilds

Best For: Polaris Ranger Midsize, Ranger and Ranger 500 Owners Rebuilding The Brakes

• Ranger Midsize owners replacing worn caliper pistons
• Riders in sand, mud and water who wear brakes fast
• Higher-hour trail and work machines
• Owners doing their own brake service

Specifications

• Brand: All Balls Racing
• Product type: rear stainless brake caliper piston kit
• Contents: Caliper piston x1
• Kit type: rear stainless brake caliper piston kit
• Position (per All Balls): rear
• Material: 304 stainless steel
• Country of origin: China
• Manufacturer Part Number: 18-9036

Fitment

All Balls lists this rear stainless brake caliper piston kit for the following UTVs:

• Polaris ACE 900 XC (2017-2019)
• Polaris Ranger 570 Midsize (2013-2021)
• Polaris Ranger 400 (2010-2014)
• Polaris Ranger 500 (2017-2022, 2026)
• Polaris Ranger 570 SP (2022-2025)
• Polaris Ranger Pro XD (2022-2025)
• Polaris ACE 325 (2014-2016)
• Polaris ACE 325 EU (2015)
• Polaris ACE 325 HD (2015)
• Polaris ACE 570 (2015-2016)
• Polaris ACE 570 EU (2015-2018)
• Polaris ACE 570 HD (2015-2016)
• Polaris ACE 570 MD (2016)
• Polaris ACE 900 EFI EPS (2016)
• Polaris Ranger 2x4 (2004)
• Polaris Ranger 2x4 500 (2005-2007)
• Polaris Ranger 325 ETX (2015-2016)
• Polaris Ranger 325 ETX EU (2015)
• Polaris Ranger 4x4 500 (2004-2007)
• Polaris Ranger 4x4 500 EFI (2007, 2011-2012)
• Polaris Ranger 4x4 700 (2005-2007)
• Polaris Ranger TM 700 (2004-2006)

Position by machine, per All Balls:

• Rear: Polaris ACE; Polaris PRO; Polaris Ranger; Polaris Ranger 325; Polaris Ranger 500; Polaris Ranger 570

All Balls also lists this part for some ATV models; D2D lists UTV fitment only.

Fitment is based on the manufacturer's application data. Fitment is not guaranteed on unlisted models; confirm your exact year, model and package before ordering.

FAQ

Why replace the Ranger Midsize caliper pistons with stainless?

OEM composite pistons can turn brittle and chrome or aluminum pistons can corrode and stick. All Balls' 304 stainless pistons resist corrosion and carry less heat into the caliper.

What comes in the kit?

All Balls lists one caliper piston.

Which models does it fit?

All Balls lists Polaris Ace 900 XC (2017-2019); Polaris Ranger Midsize (2013-2021); Polaris 400 (2010-2014); Polaris 500 (2017-2022, 2026); Polaris SP 570 (2022-2025); Polaris Ranger Pro XD (2022-2025); Polaris ACE 325 (2014-2016); Polaris ACE 325 EU (2015); Polaris ACE 325 HD (2015); Polaris ACE 570 (2015-2016); Polaris ACE 570 EU (2015-2018); and more, see the full fitment list below.

Which position does it fit?

All Balls lists this part for the rear position on the machines it covers. Confirm your exact year and model in the fitment list.

Is installation difficult?

The caliper is disassembled, the old pistons are pushed out and the new stainless pistons go in with fresh seals. A caliper rebuild kit is usually replaced at the same time. Bleed the brakes afterward. All Balls does not publish an install sheet for this part.

Do I need a caliper rebuild kit as well?

Usually yes. New seals and boots should go in with new pistons, so pair this with the matching All Balls caliper rebuild kit.

Why All Balls Racing

All Balls Racing specializes in replacement bearings, seals, brake, drivetrain, steering and suspension parts for ATVs and UTVs, packaged by application so the right parts arrive for the job. Its kits are built as direct replacements for the factory parts they cover.

Complete Your Ranger Midsize Brake Service

Confirm your exact year, model and position in the fitment list before ordering. Inspect the pads, rotors, caliper seals and fluid at the same time, and bleed the brakes with fresh fluid after any hydraulic work.