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QMB139, 49cc 4-Stroke complete engine. Long crankcase version.

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


Price includes free shipping(lower 48)


QMB139 50cc Longcase Engine

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