An aftermarket modification exists to increase the displacement of an 883 cubic centimeter (cc) Harley-Davidson motorcycle engine. This involves replacing the stock cylinders and pistons with larger diameter components, resulting in a 1275cc engine size. The numerical designations correspond to the engine displacement achieved after the modification.
The primary advantage of this alteration is a significant increase in engine power and torque. This enhances acceleration, passing ability, and overall performance, making the motorcycle more suitable for riders seeking greater responsiveness. Historically, smaller displacement engines were often seen as entry-level options, and this modification provided a cost-effective pathway to upgrade performance without replacing the entire motorcycle.