WOSSNER connecting rod kit for YAMAHA YZ 250 F, YZ 250 FX from 2016 to 2020

WOSSNER offers this connecting rod kit for YAMAHA YZ 250 F, YZ 250 FX from 2016 to 2020. The rod passes the piston’s motion to the crankshaft. Its big-end bearing spins at very high revs and eventually develops play.

Why replace the connecting rod?

The benefits:

• Remove the play that causes noise and vibration.
• Make a high-hours engine reliable again.
• Cheaper than a complete crankshaft when the flywheels are good.

Why choose WOSSNER?

Wössner has also forged its own connecting rods since 2010, with the same in-house forging expertise as its pistons.

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

Unusual vibration, a deep knock that follows engine speed or play in the con-rod: the bottom end needs a rebuild.

The manufacturer publishes no hour interval for this model: have the con-rod play checked at every piston change. Cross-Mania guideline: rebuild the bottom end every 2 to 3 top-end rebuilds.

Specifications and fitting tips

• Displacement: 250 cm³
• Material: 8620 steel
• Style: Standard
• Engine: 4-stroke
• Manufactured to tight tolerances from premium materials
• Designed to fit the OEM bearing and crank pin

Cross-Mania tip: Fitting requires a press and truing the crankshaft with a dial gauge. If you are not equipped, have it done by a workshop.

Also needed with this part

• Crankshaft bearings and seals : see the selection
• Complete engine gasket kit : ATHENA · MOOSE
• Piston : ATHENA · PROX
• 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 YZ 250 F 2019
YAMAHA YZ 250 F 2018
YAMAHA YZ 250 F 2017
YAMAHA YZ 250 F 2016
YAMAHA YZ 250 FX 2020