S&S Cycle 107 cu. in. Bolt-in 3.937" Big Bore Kit (Silver) for Various Various Harley-Davidson Motorcycles (See Fitment List)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Easy installation: no need to bore or split existing cases, just swap the cylinders
Fitment
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Shipping information
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Returns & warranty
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