Seller notes

GY6 STORE 50cc 4-stroke QMB139 complete engine assembly. Long crankcase **THIS IS THE LONG SHAFT FOR 2-SHOCK SET UP** Engine (50cc QMB139 long case ) Engine is set up for PAIR Emissions System. PAIR is an acronym for Pulsed Secondary Air Injection System. It is an emissions control system used to lower HC and CO emissions. It works by allowing air into the exhaust flow. Please Read The Following Important Notices:Engine Oil 10W-40. DO NOT RUN ENGINE WITHOUT ADDING SPECIFIED AMOUNTS OF OIL.Check ...

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