520109 Transmission pulley. 28 tooth

This 28-tooth transmission pulley is a high-quality replacement for the stock drive gear on many Harley-Davidson models. While 28 teeth is the standard configuration for many 883 Sportsters, it can also be used for gearing changes on other compatible bikes. It fits 2004 to 2022 XL Sportster models and 2008 to 2012 XR1200 models, serving as a direct replacement for OEM 40379-04. Changing your pulley is a great way to restore smooth power delivery or adjust your final drive ratio for better acceleration or highway cruising. Made to exacting standards by MCS, this pulley ensures proper belt alignment and long-lasting durability. Whether you are doing a standard repair or fine-tuning your Sportster's performance, this 28-tooth pulley provides the reliable fit and function you need for the long haul.