Product Description Help reduce vibration in the primary and improve shifting performance Not necessary to remove primary chain to install Hayden Enterprises Inc Primary Chain Tensioner at J&P Cycles Browse all J&P Cycles deals $129.99 In Stock at J&P Cycles Price verified today Buy Now at J&P Cycles Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Hayden Enterprises Inc Size OS Condition New MPN M6-BT07 Hayden Enterprises Inc