GY6 Upper Cooling Shroud - Emissions

In stock
Upper Cooling Shroud for Emissions (PAIR) style 150cc and 125cc GY6 4-stroke QMI152/157 and QMJ152/157 engines.

PAIR is an acronym for Pulsed Secondary Air Injection System which is found on your cylinder head. It is an emissions control system used to lower HC and CO emissions. It works by allowing air into the exhaust flow.
  • Emissions Style (PAIR)
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