High Performance Grooved Brake Shoes – GY6 High friction grooved linings, efficie improves with heat. Blue Series brake shoes are made using high pressure Die cast aluminum platforms with bonded brake linings. All shoes are radius ground and edge trimmed and also feature lead in and lead out chamfers at lining ends and original equipment style brake shoe springs. The multiple angled liner grooves are designed to channel away dirt, dust,water and debris from the braking area to improve braking and extend shoe and drum life. Found in Buddy 125/150/170i Fits most GY6-based scooters plus many go-carts and ATVs. (Verify measurements) Baja JMstar Jonway Lance NST Peace Roketa Sunl Tank TNG Vento VIP and many others