Motorcycle Primary Chain & Belt Tensioners

The most recognized motorcycle engine in the United States, the V-twin is available in different modifications and displacements and is widely used by Harley Davidson, Ducati, and some other legendary manufacturers. Motors of this type have numerous advantages and can be found both in heavy cruisers and lighter street bikes. Of course, V-twins have their own specific features, and the way of transferring power from the engine to the transmission is one of them. The system responsible for that is called the primary drive. It transmits torque from the crankshaft to the gearbox input shaft.

In general, there are two main configurations of primary drive used in V-twins: the chain and belt one. The former employs a chain, sprockets, and tensioner. This assembly is located behind a metal cover, perfectly sealed, and shielded from water and dirt; its inner parts are constantly lubricated with oil. Found in most stock motorcycles, the chain primary drive is very durable and reliable but needs some accurate adjustments and new tensioners (or just their shoes) over time, as a metal chain gradually gets longer due to the wear of its rollers. The system using a belt is a newer solution; it's easy to install or replace and doesn't need any adjustments. However, it's completely open, so dirt and small stones can easily get there. Also, belts may cause problems with high-torque motors or while working at high RPM.

In our online store, you will find a wide assortment of motorcycle primary chain tensioners, transmission bolt kits, manual adjusters, tensioner lock tabs, adjuster shoes, and other products enabling you to repair your motorcycle or alter its construction. These parts look rather simple, but their quality and wear resistance are hugely important for long and trouble-free operation. With that in mind, we source our selection of products from leading aftermarket companies such as Hayden Enterprises and Twin Power, so you are sure to obtain reliable parts only.