Front brake caliper pistons designed to restore braking performance on a select range of Yamaha Grizzly and Suzuki LT-A ATVs. This piston kit fits Yamaha YFM550 Grizzly (2009-2012), Yamaha YFM700 Grizzly (2007-2012), Yamaha YFM700GD/GP (2016-2019), and Yamaha YFM700KD/KP (2016-2019), plus Suzuki LT-A700X family (LT-A400/F 2008-2018, LT-F400/F 2008-2018, LT-A500X/XP 2009-2018, LT-A750X 2008-2018). Replacing worn pistons helps restore pedal feel, improve braking response, and reduce the risk of leaking seals.

This aftermarket replacement is built to endure trail and farm duty, delivering consistent performance when brakes are counted on in rough terrain. The pistons are engineered for reliable fitment into the front calipers of the listed models, helping prevent sticking or uneven pad contact that can compromise stopping power. With corrosion-resistant construction and a design that mirrors OEM specifications, this kit is a solid choice for riders who demand predictable braking under demanding conditions.

Comprehensive Vehicle Fitment

Product Specifications

OEM & Aftermarket Cross-Reference Information

What's Included

In the box you’ll receive the essential replacement components for the front brake caliper piston set.

• Front Caliper Piston Set

Related seals and anti-squeal components are model-specific; consult the OEM cross-reference for exact compatibility.

Why Choose This Aftermarket Replacement?

• Direct-Fit Compatibility—designed to match the geometry and fit of the front calipers on the listed Yamaha and Suzuki models.
• OEM Cross-Reference—aligned with the OEM piston references to simplify identification and compatibility checks.
• Premium Materials—constructed from corrosion-resistant aluminum alloy with a hard-wearing finish to withstand trail and farm use.
• Performance Restoration—restores smooth piston movement, consistent pad contact, and reliable braking force after wear.
• Long-Lasting Reliability—engineered to resist seizing and compressor-style sticking under harsh conditions.
• Cost-Effective Replacement—a non-OEM option that prioritizes value without sacrificing essential fit and function.

Installation Notes:

• Carefully remove the old pistons and inspect the caliper bore for scoring or corrosion; clean thoroughly before installation.
• Lubricate piston seals with clean brake fluid compatible with DOT specifications; avoid petroleum-based lubricants.
• Use a proper caliper rebuilding setup to avoid introducing debris into the hydraulic system; keep all components clean and dry.
• When installing, ensure correct orientation of pistons and seals to prevent uneven pad contact and brake drag.
• Bleed the front brake circuit after reinstalling the caliper to purge air and restore firm pedal feel; check for leaks.
• Torque mounting bolts to the factory specification and verify caliper alignment to avoid rotor rub or pad contact issues.

Why Upgrade?

Running a worn front caliper piston set can lead to sticking, brake fade, and uneven braking, especially under muddy or hilly terrain. Upgrading to this replacement restores reliable, predictable braking performance, giving you confident stopping power during trail rides and farm work alike.