And in order to combat the culprit, Twin Power has developed the solution by stopping overtightening in its tracks with the Tension Reliever. It replaces the stock factory adjuster, allowing a proper primary chain adjustment of 5/8–7/8 inches of free play when cold. It is machined from 6061-T6 aluminum and is hard anodized for durability. It also features a 4140 steel adjusting screw and heavy-duty nylon 6/6 shoe. Not only is it durably made in the USA but it is easy to adjust and it uses stock mounting hardware. You should note that in order to make adjustments to the chain and perform a tension check you will have to remove the outer primary cover. Also note that you can only use the Twin Power Tension Reliever Manual Primary Chin Adjuster for a 34 tooth sprocket.