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Description: Exhaust Stainless Steel Performance for 139QMB 49/50cc 4-stroke engines. Finally, high quality reasonably priced performance exhaust for the GY6 50. Sourced from one of the most reputable Taiwanese exhaust manufacturers, this exhaust works for all sport style GY6 49/50cc 139QM..

Description: LeoVince Exhaust HM-Titan Performance for 139QMB 49/50cc 4-stroke engines. The LeoVince HM-Titan 4 stroke exhaust has a motocross-style silencer for a mix of style, sound, and performance.When changing a cylinder kit or an exhaust, it's a good idea to pick up a few extra ..

Description: The NARAKU crossover combines Racing design with an internal structure that is tailored to the requirements of 4-stroke engines. Road legal thanks to E-certification. Most 4-stroke exhausts are just borrowed from 2-stroke series and only the brackets have been altered. The result is a v..

Description: NCY Exhaust Stainless Steel Performance for 139QMB 49/50cc 4-stroke engines. The long-awaited high-end 50cc GY6 exhaust is here at last. Get your Chinese-made scooter the pep and blingy appearance it deserves with this performance exhaust pipe by the famous NCY racing company elect..

Description: SSP-G Exhaust Stainless Steel Performance for 139QMB 49/50cc 4-stroke engines.When changing a cylinder kit or an exhaust, it's a good idea to pick up a few extra exhaust studs + nuts M6 set since these can easily need replacing and bring your project to a grinding halt wh..