Reproduction of OEM 51781-52 upper spring and OEM# 51784-52 lower spring used on 1952-1970 Harley-Davidson K

Standard size studs are exact duplicate of OEM# 2318-15

and poor performance

Chrome plated allen screw and lock- nuts fit 1978-1983 FXWG

unit Triumph motorcycle

Clamp on Tensioner 530 Sprocket - 1.125 inch Tubing Brand_Kustom Tech Reproduction of OEM 51781-52 upperThis tensioner is used to keep the chain tight automatically, which avoids chain slap which can cause drive issues as well as damage to fenders and frames. 1 2 thick steel bracket machined and powder coated, clamps right on your bike! Done. Made in the USA. Fits 530 Chain (Standard) 13 tooth idler sprocket with sealed bearings and hardware Clamps designed for 1. 125 inch tubing Powder Coated Black Tig Welded The spring is hand wound spring stainless