S&S, 3-5/8 bore piston rings. +.040" - Most S&S Evo & pre-Evo engines 954718 XL 883 models require installation

XL 883 models require installation of the stock 34T sprocket

Fits: > 55-83 Big Twin

The cotton collar adds a touch of elegance and warmth

They therefore require Feuling 963228 upper pushrod tube kit

Takes a 3/8 NPT threaded petcock

S&S, 3-5/8 bore piston rings. +.040" - Most S&S Evo & pre-Evo engines 954718 XL 883 models require installationS&S chr moly replacement piston ring set. Fits all Evolution & pre Evolution engines that are equipped with an S&S 3 5 8" big bore kit that have 1 16" (1. 5mm) compression rings and 5 32" (4. 2mm) oil rings. Will also fit other manufacturers 3 5 8" Big Bore kits (like some Axtell kits), that are equipped with the same piston grooves. Std cyl. bore: 3. 625" (92. 075mm). 1st ring: 1. 5mm (. 058"). 2nd ring: 1. 5mm (. 058"). oil ring: 4. 2mm (. 155").