HOT RODS transmission bearing kit for YAMAHA WR 250 F, YZ 250 F, YZ 250 FX from 2019 to 2024

HOT RODS offers this transmission bearing kit for YAMAHA WR 250 F, YZ 250 F, YZ 250 FX from 2019 to 2024. The engine’s shafts run on ball or roller bearings in the cases. They carry heavy loads at high revs and eventually develop play.

What is this bearing made of?

Races and balls (or rollers) in hardened chrome steel, 100Cr6 type: a very hard steel that withstands the fatigue of millions of engine revolutions.

• Open bearing: unsealed, it is lubricated and cooled by the engine oil; clean oil is its best protection.
• C3 / C4 internal clearance: slightly more clearance than normal for a hot engine’s expansion; always refit the original clearance.
• Limit: it dislikes dust and old oil; running short of oil destroys it within minutes.

Why choose HOT RODS?

Hot Rods, the bottom-end specialist since 1993: crankshafts, rods, bearings and seals for a complete rebuild.

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

On competition bikes the main bearings are replaced at every bottom-end rebuild, at the hours recommended by the manufacturer. With the cases open, spin each bearing by hand: the slightest rough spot means it must go.

Specifications and fitting tips

• Style: Replacement
• A must for any new transmission or engine case installation or repair
• Replacement bearings for main shaft, countershaft and shift drum

Cross-Mania tip: Heat the cases to remove and fit the bearings without forcing them, and replace the oil seals at the same time.

Also needed with this part

• Complete engine gasket kit : CENTAURO · ATHENA
• 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 2024
YAMAHA WR 250 F 2023
YAMAHA WR 250 F 2022
YAMAHA WR 250 F 2021
YAMAHA WR 250 F 2020
YAMAHA YZ 250 F 2024
YAMAHA YZ 250 F 2023
YAMAHA YZ 250 F 2022
YAMAHA YZ 250 F 2021
YAMAHA YZ 250 F 2020
YAMAHA YZ 250 F 2019
YAMAHA YZ 250 FX 2024
YAMAHA YZ 250 FX 2023
YAMAHA YZ 250 FX 2022
YAMAHA YZ 250 FX 2021
YAMAHA YZ 250 FX 2020