This 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 steel for unsurpassed tension