FMF KTM 125-300 O-RING REBUILD KIT

FMF KTM 125–300 ’05–’25 O-Ring Rebuild Kit – Seal It Right, Ride It Hard

Refresh your exhaust system with the FMF O-Ring Rebuild Kit, designed specifically for KTM 125–300 2-stroke models from 2005 to 2025. This kit includes high-quality replacement O-rings built to withstand high temps and hard rides—keeping your pipe sealed tight and your power delivery crisp.

Whether you’re installing a new FMF pipe or maintaining your current setup, this kit ensures a leak-free fit at the cylinder and header junction. No more blow-by, no more mess—just reliable performance, ride after ride.