293cc Big Bore Top End Kit For 1999-2025 Yamaha YZ250 2-Stroke – Complete Cylinder Kit

Boost your YZ250's power with this 293cc big bore top end kit from Apex.

It fits Yamaha YZ250 2-stroke models from 1999 all the way up to 2025 – no modifications needed.

The kit includes everything: cylinder barrel, cylinder head, piston, rings, wrist pins, power valves, and gasket set.

The cylinder features a durable nickel carbide coating.

Made in the USA.

This is a performance/custom bundle that increases displacement from 250cc to 293cc for more torque and horsepower.

California Prop 65 warning applies.

If you're looking to refresh your engine or want a significant power boost for motocross or trail riding, this kit is a popular upgrade.

Part number: ApexYZ293.