PROX engine bearing 6203 C3 – 17 × 40 × 12 mm for YAMAHA PW 50, KTM SX 50 MINI ADVENTURE

Name: PROX engine bearing 6203 C3 – 17 × 40 × 12 mm for YAMAHA PW 50, KTM SX 50 MINI ADVENTURE
Brand: PROX
SKU: 23.6203C3
Price: 12.9 EUR
Availability: InStock

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€12.90

Tax Included

Stock del proveedor, enviado en 2 a 5 días.

Bearing: 6203 C3 – 17 × 40 × 12 mm

An engine bearing: it lets a shaft (crank, gearbox, pump) turn without friction.

Check before ordering

Bearing: 6203 C3
Dimensions (inner × outer × width): 17 × 40 × 12 mm

PROX offers this engine bearing for YAMAHA PW 50, KTM SX 50 MINI ADVENTURE, SX 50 SENIOR ADVENTURE and SUZUKI LT 50 from 1982 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.

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 : MOOSE 808601MSE · MOOSE 811601MSE
2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063

Compatibility

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

Reference 23.6203C3

In stock10 Items

Specific References

Click on your bike to see all compatible parts.

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PROX engine bearing for YAMAHA PW 50, KTM SX 50 MINI ADVENTURE, SX 50 SENIOR ADVENTURE and SUZUKI LT 50 from 1982 to 2026

PROX engine bearing 6203 C3 – 17 × 40 × 12 mm for YAMAHA PW 50, KTM SX 50 MINI ADVENTURE

€12.90

Tax Included


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PROX engine bearing 6203 C3 – 17 × 40 × 12 mm for YAMAHA PW 50, KTM SX 50 MINI ADVENTURE

Check before ordering

What is this bearing made of?

Why choose PROX?

When should you replace the bearings?

Specifications and fitting tips

Also needed with this part

Compatibility

PROX engine bearing 6203 C3 – 17 × 40 × 12 mm for YAMAHA PW 50, KTM SX 50 MINI ADVENTURE