Cylinder Works 13-16 Honda CRF 450 R 450cc +3mm Big Bore Cylinder Kit 478cc, 12.5:1 Comp. 99mm

Crafted from a high-quality 2618 aluminum alloy, this big bore cylinder kit from Cylinder Works is built for enhanced strength and durability. It's designed to increase both the horsepower and the overall displacement of your 2013-2016 Honda CRF 450 R's engine, taking it from 450cc up to a substantial 478cc with a +3mm bore. This kit is a complete package, including a hand-matched Vertex piston and a top-end gasket kit with O-rings, offering a cost-effective alternative to sourcing individual OEM components.

The design aims for an OEM appearance while delivering performance gains, making it a solid choice for riders looking to extract more power from their machine. By increasing the engine's displacement, you can expect improved throttle response and more pulling power, especially noticeable in off-road riding scenarios where torque is crucial. The 12.5:1 compression ratio is optimized for performance, providing a noticeable boost in output.

This all-in-one kit simplifies the rebuilding process, providing the essential components needed for a big bore upgrade. Ensure you follow the manufacturer's installation instructions carefully for optimal results and longevity of the new components.