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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.
This part fits the following vehicles.
| Country Of Origin | USA |
|---|
WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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