35mm Foam Filter Fit For 50cc 70cc 90cc 110cc XR50 CRF50 For Pit Dirt Bike Motorcycle Engine Parts fit for 35mm carburetors on 50cc,70cc,90cc,110cc For pit dirt bikes, compatible with Honda XR50 CRF50 models porous foam blocks sand, dirt debris to cylinder abrasion extend engine life Oil-washable reusable foam material supports repeated without deformation, lowers long-term cost Lightweight breathable structure ensures sufficient , maintains engine power output without throttle lag Direct slip-on installation matching tube, no or extra adapters required for quick replacement