Complete Performance Exhaust System for GY6 50cc/80cc 4 Stroke Scooters with a 10" Rear Rim Fits most 50cc 4 Stroke Chinese Scooters GY6 50cc QMB139 with a 10 Rear Rim Complete Exhaust System: Head Pipe Muffler, Gasket, Mouting Hardware Durable Stainless Steel, Black Round Canister. Overall Length: 14 Inches | Width: 4 Inches