GOOFIT 44mm Big Bore 53cc 54cc Top End Kit for 2 Stroke 47cc 49cc Engine Mini Quad Pocket Bike

GOOFIT

$91.19 
SKU: Group-5

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Fit for 2 stroke 43cc 47cc 49cc 50cc engine(read description for more fitment infos)
Performance upgrade part for Chinese 47/49CC engines (Increase your HP by 2hp - 3hp over your regular engine)
Piston diameter :44 mm,piston pin length: 37 mm.