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    PROX Crankshaft Bearing & Oil Seal Kit for YAMAHA YFZ 450 2009-2025
    PROX Crankshaft Bearing & Oil Seal Kit for YAMAHA YFZ 450 2009-2025

    PROX Crankshaft Bearing & Oil Seal Kit for YAMAHA YFZ 450 2009-2025

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    €96.90
    Tax Included
    Stock del proveedor, enviado en 2 a 5 días.

    The engine’s bearings and oil seals in one kit for a bottom-end rebuild.

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    Stock del proveedor, enviado en 2 a 5 días.

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      PROX offers this engine bearing and seal kit for YAMAHA YFZ 450 2009-2025. The crankshaft and gearbox shafts spin on bearings in the cases; oil seals keep the oil in around the shafts.

      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 your YAMAHA YFZ 450?

      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

      • Crankshaft bearing + seal kit
      • Bearings treated to minimise friction
      • Manufacturer part number: 23.CBS24009

      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

      Compatibility

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

      Fits:
      YAMAHA YFZ 450 2025
      YAMAHA YFZ 450 2024
      YAMAHA YFZ 450 2023
      YAMAHA YFZ 450 2022
      YAMAHA YFZ 450 2021
      YAMAHA YFZ 450 2020
      YAMAHA YFZ 450 2019
      YAMAHA YFZ 450 2018
      YAMAHA YFZ 450 2017
      YAMAHA YFZ 450 2016
      YAMAHA YFZ 450 2015
      YAMAHA YFZ 450 2014
      YAMAHA YFZ 450 2013
      YAMAHA YFZ 450 2012
      YAMAHA YFZ 450 2011
      YAMAHA YFZ 450 2010
      YAMAHA YFZ 450 2009

      PROX
      23.CBS24009
      15 Items

      Specific References

      Click on your bike to see all compatible parts.

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      PROX Crankshaft Bearing & Oil Seal Kit for YAMAHA YFZ 450 2009-2025
      PROX Crankshaft Bearing & Oil Seal Kit for YAMAHA YFZ 450 2009-2025
      PROX Crankshaft Bearing & Oil Seal Kit for YAMAHA YFZ 450 2009-2025
      PROX Crankshaft Bearing & Oil Seal Kit for YAMAHA YFZ 450 2009-2025
      €96.90
      Tax Included