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PROX offers this engine bearing for KAWASAKI KX 250, KX 250 F, KX 250 X and SUZUKI RM-Z 250 from 2004 to 2026. The engine’s shafts run on ball or roller bearings in the cases. They carry heavy loads at high revs and eventually develop play.
Races and balls (or rollers) in hardened chrome steel, 100Cr6 type: a very hard steel that withstands the fatigue of millions of engine revolutions.
ProX uses Koyo or NTN bearings, largely made in Japan in OEM factories, with the original internal clearance (C3 / C4).
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.
Cross-Mania tip: Heat the cases to remove and fit the bearings without forcing them, and replace the oil seals at the same time.
Check the exact model and year of your bike in the list below before ordering.
Fits:
KAWASAKI KX 250 2026
KAWASAKI KX 250 2025
KAWASAKI KX 250 2024
KAWASAKI KX 250 2023
KAWASAKI KX 250 2022
KAWASAKI KX 250 2021
KAWASAKI KX 250 F 2019
KAWASAKI KX 250 F 2018
KAWASAKI KX 250 F 2017
KAWASAKI KX 250 F 2016
KAWASAKI KX 250 F 2015
KAWASAKI KX 250 F 2014
KAWASAKI KX 250 F 2013
KAWASAKI KX 250 F 2012
KAWASAKI KX 250 F 2011
KAWASAKI KX 250 F 2010
KAWASAKI KX 250 F 2009
KAWASAKI KX 250 F 2008
KAWASAKI KX 250 F 2007
KAWASAKI KX 250 F 2006
KAWASAKI KX 250 F 2005
KAWASAKI KX 250 F 2004
KAWASAKI KX 250 X 2026
KAWASAKI KX 250 X 2025
KAWASAKI KX 250 X 2024
KAWASAKI KX 250 X 2023
KAWASAKI KX 250 X 2022
KAWASAKI KX 250 X 2021
SUZUKI RM-Z 250 2006
SUZUKI RM-Z 250 2005
SUZUKI RM-Z 250 2004
Click on your bike to see all compatible parts.
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