Motocross/Dirt Bike Engine Bearings

Motorcycle Engine Bearing
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1024)
    0
    # mpn4697815927
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $60.96
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1046)
    0
    # mpn4697815925
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $71.34
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1081)
    0
    # mpn4697815924
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $46.12
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1016)
    0
    # mpn4697815923
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $74.69
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1007)
    0
    # mpn4691181969
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $72.94
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1067)
    0
    # mpn4686290534
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $35.60
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1008)
    0
    # mpn4686290524
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $64.88
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1022)
    0
    # mpn4686290522
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $43.25
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1009)
    0
    # mpn4686290521
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $75.96
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1052)
    0
    # mpn4686290517
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $52.29
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1011)
    0
    # mpn4686290515
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $88.78
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1017)
    0
    # mpn4686290476
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $74.16
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1074)
    0
    # mpn4686290466
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $47.54
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1032)
    0
    # mpn4686290433
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $52.97
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1058)
    0
    # mpn4686290432
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $67.38
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1105)
    0
    # mpn4686290428
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $160.61
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1102)
    0
    # mpn4686290427
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $55.41
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1097)
    0
    # mpn4686290426
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $109.18
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1075)
    0
    # mpn4686290424
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $63.49
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1048)
    0
    # mpn4686290398
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $46.25
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1101)
    0
    # mpn4686290391
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $60.99
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1068)
    0
    # mpn4686290390
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $53.40
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1073)
    0
    # mpn4686290382
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $43.90
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1044)
    0
    # mpn4686290381
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $86.16
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1020)
    0
    # mpn4686290337
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $88.53
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1004)
    0
    # mpn4686290294
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $68.98
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1072)
    0
    # mpn4686290275
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $60.85
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1062)
    0
    # mpn4686290269
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $63.66
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1036)
    0
    # mpn4686290262
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $55.70
  • All Balls® - Crankshaft Bearing and Seal Kit
    All Balls®Crankshaft Bearing and Seal Kit (24-1026)
    0
    # mpn4686290261
    Crankshaft Bearing and Seal Kit by All Balls®. Feature Koyo and Nachi Bearings (precision Japanese crank bearings). Reduce crank pin wear with our crank seals. Designed with a carbon/fluorocarbon sealing lip to reduce dry start friction.
    Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability
    $69.09




Friction is a huge problem in the engineering world. It takes the useful energy produced by the motor and converts it into harmful heat that, once accumulated, can destroy the whole assembly. Moreover, while accumulating thermal energy, the components subjected to friction suffer from abrasive wear of their surfaces. Friction in the engine can result in quick wear and/or overheating of the moving parts, yet it affects performance. Now, you know why every single shaft in the vehicle is supported by a bearing, or a few of them – these parts reduce friction.

While doing their crucial job though, the bearings themselves encounter wear. In most cases, bearings (especially engine bearings – the ones supporting the crankshaft), cannot be repaired, only replaced. The good news though is that these components are not that expensive. In fact, unless you’re doing the repair job yourself, it will cost you more to disassemble the engine to get to these worn-out shaft holders. And that’s the reason why only top-notch engine bearings make sense for your motocross bike. You can find and order them in our online store.

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