Cylinder Works 19-20 Yamaha WR 450 F 450cc +2mm Big Bore Cylinder Kit 470cc 12.8:1 Comp. 99mm

If you're looking to get more power and displacement out of your 2019 or 2020 Yamaha WR 450 F, this big bore cylinder kit from Cylinder Works is a solid option. This kit effectively turns your 450cc engine into a 470cc powerhouse, giving you a noticeable bump in horsepower and torque. It's designed to look like the stock cylinder but perform far beyond it, making it a great choice for riders who want improved performance without a radical visual change.

Inside this kit, you'll find a hand-matched Vertex piston, specifically chosen to work with the larger bore cylinder. This ensures a proper fit and optimal performance. The cylinder itself is constructed from a high-quality 2618 aluminum alloy, which is known for its strength and durability, especially under the increased stresses of a bigger displacement engine. This material choice helps ensure the longevity of the upgrade. You also get a complete top-end gasket kit, including O-rings, so you have everything you need to get the job done right. Buying it as a kit also offers cost savings compared to sourcing all the OEM components separately.

This kit is designed to increase your engine's displacement to 470cc and features a 12.8:1 compression ratio, which is a significant increase over stock. Remember to consult your service manual for the correct installation procedures and torque specifications when installing this kit.