Piston pins
Products
Piston pin, Wrist pin, Gudgeon pin
Piston pin axial clearance
Wiseco piston bolts with the S at the end of the part number have a flat end and ~0.010" clearance.
Wiseco piston bolts with a C at the end of the part number have a chamfered edge and ~0.010"-0.020" clearance.
The JE piston bolt has slightly less axial play than the corresponding Wiseco.