S&S, 3-1/2" bore replacement Evo cylinder set. Silver - 84-99 Evo B.T. (NU) 518246 Note: Requires 7/16-20 tap for

Note: Requires 7/16-20 tap for installation

Works with bearings up to 4 1/8" (10

Replacement for all National Cycle 5-bolt Beaded Heavy Duty™ windshields

14 1/2" (37cm) to 23 1/4" (59cm)

S&S, 3-1/2" bore replacement Evo cylinder set. Silver - 84-99 Evo B.T. (NU) 518246 Note: Requires 7/16-20 tap forSilver finished cylinders. Stock replacement S&S cylinders for stock Big Twin Evo models, without pistons. Std. 3 1 2" diameter and std. 5. 550" length is for stock 1340cc applications with stock 4 1 4" stroke. Note: Cylinders must be finish bored and honed to fit stock size pistons. Sold without pistons. The advantage is that this will enable you to bore the cylinders as loose, for direct racing, or tight for a quiet engine with maximum longevity.