An enhancement package for Harley-Davidson Sportster motorcycles, this modification replaces the stock rear tire with one significantly wider, specifically a 300mm tire. The aftermarket set typically includes a modified swingarm, necessary hardware, and potentially a new rear fender to accommodate the increased tire width.
This type of conversion offers an altered aesthetic appeal, lending a more aggressive and customized look to the motorcycle. The increased contact patch of the tire can potentially improve traction, although the primary motivation is often visual enhancement. Historically, such modifications have been popular within the custom motorcycle scene, reflecting a desire for personalized styling and performance.