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If your Polaris Sportsman 335, 400, or 500 is leaking brake fluid or the rear caliper isn't clamping right, this seal rebuild kit can save you from buying a whole new caliper. The kit (part number OS148A from NMD) includes all the seals, O-rings, and sometimes a piston needed to refurbish your rear brake caliper. It's brand new in its packaging, made for ATVs, and a cost-effective way to restore braking performance. Rebuilding a caliper is a straightforward job if you're mechanically inclined—just disassemble, clean, replace the seals, reassemble, and bleed the brakes. Whether you're fixing a leak, doing preventative maintenance, or bringing an old Sportsman back to life, this kit has you covered. Don't let spongy brakes ruin your trail ride—get your caliper sealing like new and enjoy confident stopping power again.
4.5 out of 5