Cylinder Works 15-19 Yamaha WR 250 F 250cc +3mm Big Bore Cylinder Kit 270cc 13.5:1 Comp. 80mm

This Cylinder Works big bore cylinder kit starts with a 2618 aluminum alloy construction, chosen for its solid strength and ability to handle the increased demands of a larger displacement engine. It's designed to give your 2015-2019 Yamaha WR 250 F a significant performance boost, bumping the displacement from 250cc up to 270cc. This isn't just about making the engine bigger; it's about unlocking more power and a more responsive feel when you're out riding.

What you get in this kit is a complete package to get your engine rebuilt with improved performance. It includes a hand-matched Vertex piston, which is crucial for proper fit and function with the new cylinder bore. You'll also find a top-end gasket kit, complete with O-rings, so you have all the necessary seals for a clean installation. By bundling these components, Cylinder Works makes it more cost-effective than sourcing each OEM part separately, while still delivering a performance-driven design that looks similar to the stock cylinder.

With a compression ratio of 13.5:1 and an 80mm bore size, this kit is built for riders looking to get more out of their WR 250 F. It's a substantial upgrade that raises horsepower and overall engine displacement, giving you that extra edge when you need it most. Make sure to consult your service manual for specific installation procedures and torque specifications.