TUN 'R brand valves equipped with Boysen type fiberglass slats (Large brand specialized for motocross and large displacement slats, etc.). Designed to replace the original valves or on well-prepared engines! They will allow in relation to the original material, a good performance gain especially at high speed. Lightweight and resistant aluminum base, high-end finish!
The slat is in fiberglass and the thickness is better studied than the origin to allow to reach a good power regime, system with double slat to optimize the performances. Mounts on scooter with vertical minarelli engine, booster, MBK Stunt, YAMAHA Bw's ... and many other models. Delivered complete as presented.