Chrome rear master cylinder assembly has a bore size of 5/8" as a replacement for forward control kits.

Chrome rear master cylinder assembly features 2-1/4" spacing between mounting bolts, a 1/8" NPT brake line fitting, with a milled body design.

This master cylinder measures 3-1/2" long x 1-1/4" wide x 3" tall.

Master cylinder has 1 3/8" thru hole and 1 5/16" tapped hole for mounting.