Huge Spanish Puch Kit! You don't need to bore out your cases to fit this sleeve, but you still get a full 46mm Bore.
Pretty amazing torquey kit, known around the shop as the "fake Metra" this kit is better. All aluminum means it is light and cools really well.
When installing this kit, make sure you have head clearance. Some customers report they have to double up gaskets or mill their head a touch.
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Lots of folks are using these kits on Garage. The worlds largest moped tuning database. Here are the list of the top builds in Garage using the Airsal 72cc Kit.