PROX engine bearing 6305 C3 – 25 × 62 × 17 mm for YAMAHA TT 600, SUZUKI RM 250

Check before ordering

• Bearing: 6305 C3
• Dimensions (inner × outer × width): 25 × 62 × 17 mm

PROX offers this engine bearing for YAMAHA TT 600, SUZUKI RM 250, TM RACING EN 125 and KAWASAKI KX 125 E from 1982 to 2014. 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 PROX?

ProX uses Koyo or NTN bearings, largely made in Japan in OEM factories, with the original internal clearance (C3 / C4).

When should you replace the bearings?

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

• Application: Crankshaft
• ProX bearings are made in major bearing manufacturers' factories, mainly in Japan
• All bearings are made to OEM specifications for optimum quality and performance

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 : ATHENA P400485850612 · ATHENA P400510850035
• 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:
KAWASAKI KX 125 D 1985
KAWASAKI KX 125 E 1987
KAWASAKI KX 125 E 1986
SUZUKI RM 250 1993
SUZUKI RM 250 1992
SUZUKI RM 250 1991
SUZUKI RM 250 1990
SUZUKI RM 250 1989
SUZUKI RM 250 1988
SUZUKI RM 250 1987
SUZUKI RM 250 1986
SUZUKI RM 250 1985
SUZUKI RM 250 1984
SUZUKI RM 250 1983
SUZUKI RM 250 1982
TM RACING EN 125 2014
TM RACING EN 125 2013
TM RACING EN 144 2014
TM RACING EN 144 2013
TM RACING MX 125 2014
TM RACING MX 125 2013
TM RACING MX 144 2014
TM RACING MX 144 2013
YAMAHA TT 600 1991
YAMAHA TT 600 1990
YAMAHA TT 600 1989
YAMAHA TT 600 1988
YAMAHA TT 600 1987
YAMAHA TT 600 1986
YAMAHA TT 600 1985
YAMAHA TT 600 1984
YAMAHA XT 600 1990
YAMAHA XT 600 1989
YAMAHA XT 600 1988
YAMAHA XT 600 1987
YAMAHA XT 600 1986
YAMAHA XT 600 1985
YAMAHA XT 600 1984