Description
Set of pistons: P4 90 (1954-1955) models with 11/16″ gudgeon pin
Compression ratio 6.73 : 1 (unique to this year models)
This set comprises of 6 pistons and a full set of piston rings
This is a genuine Peter Hepworth with a 11/16″ (17.4mm) gudgeon pin diameter (original STD bore 73.025mm or 2.875″) – please check dimensions before ordering to avoid errors
Please specify size required
OE Part Number: 13517
