CYLINDER WORKS cylinder kit for YAMAHA WR 250 F, YZ 250 F, YZ 250 FX from 2016 to 2019

CYLINDER WORKS offers this cylinder kit for YAMAHA WR 250 F, YZ 250 F, YZ 250 FX from 2016 to 2019. The cylinder kit groups a cylinder and the parts to fit it (piston, rings, gaskets depending on the kit: see contents). “Big bore” kits increase the bore and therefore the displacement: the engine gains torque and power.

Why buy a cylinder kit?

The benefits:

• A cylinder and its matched piston: perfect fitting clearance.
• One order to rebuild the top end.
• Big bore versions give more torque and power (check the rules if you race).

Why choose CYLINDER WORKS?

Cylinder Works supplies brand-new, not remanufactured, cylinders with a nickel-silicon-carbide coating; its kits come with a matched forged Vertex piston.

When should you replace the cylinder on your YAMAHA YZ 250 F?

Harder starting, loss of power, blue smoke, oil consumption or a knock when cold: these are the signs of a tired top end.

No manufacturer hour figure for this model. Cross-Mania guideline: compression check every 30 h in hard use and every 60 h for leisure.

Specifications and fitting tips

• Oversize: Standard
• Displacement: 250 cm³
• Cylinder bore: 77.00 mm
• Bore coating: Nickel silicon carbide
• Style: Standard
• Ready-to-install cylinders, bolt-on fitment with no replating, look virtually identical to stock cylinders

Cross-Mania tip: Check the diameter of the supplied or required piston and replace the top-end gaskets. A big bore may require carburation or fuel-injection adjustment.

Also needed with this part

• Top-end gasket kit : ATHENA · CENTAURO
• Spark plug : NGK 8 g · NGK
• 4-stroke engine oil : LIQUI MOLY 10W40 1 L · MOTUL 10W50

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
YAMAHA WR 250 F 2019
YAMAHA WR 250 F 2018
YAMAHA YZ 250 F 2018
YAMAHA YZ 250 F 2017
YAMAHA YZ 250 F 2016
YAMAHA YZ 250 FX 2019
YAMAHA YZ 250 FX 2018
YAMAHA YZ 250 FX 2017