Stage6 12mm-10mm bearing adapter
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Stage6 small end bearing, adapter for 12mm to 10mm piston pin reduction. Made for owners of Stage6 crankshafts for 12mm piston pins who want to use a cylinder with 10mm piston pin without having to replace the entire crankshaft.
Note: it has a 17mm outer diameter which means that it is not compatible with all crankshafts; many have a 15mm or 16mm outer diameter. So make sure it will be compatible before ordering.
10x17x13mm.