Gudgeon pin / small end bush, free fit for Norton singles 1932+. Length 1.145in (29mm), OD 1.027in, ID 0.8745in.
NOTE: This bush E4102F is the 'slack' bush, machined so it should be "ready to fit" basically it should not be tight in the small end (it may need loctite) and the bore is sized for the gudgeon pin. Ie this is an in-situ repair. Not ideal but with care it should work fine. However e4102 the tight fit bush is the proper way to go.
The bushes are cnc machined in the UK and have two identical oil grooves exiting from each end on a 1" pitch transposed 180 degrees apart. The holes in the top should be carefully drilled after fitting.
Original part numbers:
9175; A2/159; E4102 - small end bush