Dirt Bike Engine Bearings
Dirt Bike Engine Bearings & Crank Bearing Kits for Yamaha, Honda & Beta at JJ Motorsports
Rebuild your dirt bike's bottom end with premium crankshaft bearings, needle bearings, and complete seal kits from JJ Motorsports — precision-engineered for perfect fit, reduced friction, and extreme durability in motocross, enduro, and trail riding. Our selection includes high-quality main bearings, crank bearing/seal kits, and needle bearings designed to handle high RPM, high heat, and heavy loads while restoring smooth, quiet operation. Compatible with top models like Yamaha YZ/WR, Honda CRF/CR, Beta RR, and more, these components from trusted brands deliver OEM or better performance with upgraded materials that outlast stock bearings in dusty, abusive conditions. Whether you're splitting the cases for a full rebuild or just replacing worn mains, these kits give you everything — bearings, seals, and gaskets — for factory-fresh feel and championship-level reliability.
At JJ Motorsports, we stock the best dirt bike engine bearings and crank kits from Moose Racing, Shindy, and Vintco with fast shipping and expert support. Free shipping over $99!
Top Dirt Bike Engine Bearings & Kits
- Shindy Needle Bearing 16 mm x 21 mm x 23 mm Yamaha 10-301 – High-quality needle bearing for Yamaha models; exact OEM spec for shock linkage and swingarm applications.
- Moose Offroad Crank Bearing & Seal Kit Beta 24-1128 – Complete crank bearing and seal kit for Beta RR models; includes both sides for full bottom-end refresh.
- Vintco Main Bearing and Seal Kit Honda KMB034 – Premium main bearing and crank seal kit for vintage Honda models; perfect for classic CR and XR restoration with modern durability.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping over $99! Questions? Contact us for fitment advice!
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- Qty in Cart
- Quantity
- Price
- Subtotal
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On Sale
PROX Crankshaft Bearing/Seal Kit - Kawasaki 23.CBS43051
PROX
MSRP: $106.95Now: $85.00Was: $106.95A crankshaft bearing and seal failure can sideline your engine and compromise reliability when you need it most. This PROX kit delivers OEM-specification components engineered to restore your Kawasaki's crankshaft integrity, ensuring proper oil...09240702- SKU:
- 09240702
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $106.95Now: $85.00Was: $106.95Qty in Cart: 0Quantity:Price:MSRP: $106.95Now: $85.00Was: $106.95Subtotal: -
On Sale
PROX Crankshaft Bearing/Seal Kit - KTM 23.CBS60001
PROX
MSRP: $38.95Now: $31.00Was: $38.95A properly sealed crankshaft is fundamental to engine longevity—compromised bearings and worn seals lead to oil starvation and contamination that cascade into catastrophic failure. This ProX kit delivers OEM-specification bearings and seals engineered to...09240703- SKU:
- 09240703
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
MSRP: $38.95Now: $31.00Was: $38.95 -
On Sale
PROX Crankshaft Bearing/Seal Kit - KTM 23.CBS60009
PROX
MSRP: $41.95Now: $34.00Was: $41.95A worn or damaged crankshaft bearing and seal assembly will compromise engine integrity, reduce performance, and risk catastrophic failure. The PROX Crankshaft Bearing/Seal Kit delivers OEM-specification replacement components that restore proper...09240704- SKU:
- 09240704
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
MSRP: $41.95Now: $34.00Was: $41.95 -
On Sale
PROX Crankshaft Bearing/Seal Kit - Husaberg/Husqvarna/KTM 23.CBS63013
PROX
MSRP: $187.95Now: $150.00Was: $187.95A compromised crankshaft bearing or seal will quickly degrade engine performance and lead to catastrophic internal damage. The PROX Crankshaft Bearing/Seal Kit supplies all necessary components to restore your crankshaft to OEM specifications, ensuring...09240705- SKU:
- 09240705
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
MSRP: $187.95Now: $150.00Was: $187.95Qty in Cart: 0Quantity:Price:MSRP: $187.95Now: $150.00Was: $187.95Subtotal: -
On Sale
PROX Crankshaft Bearing/Seal Kit - Husqvarna/KTM 23.CBS63016
PROX
MSRP: $180.95Now: $144.00Was: $180.95Crankshaft bearing and seal failure can compromise engine integrity and sideline your machine at critical moments. This ProX kit delivers OEM-specification components engineered for reliability, ensuring your crankshaft operates with minimal friction and...09240706- SKU:
- 09240706
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
MSRP: $180.95Now: $144.00Was: $180.95Qty in Cart: 0Quantity:Price:MSRP: $180.95Now: $144.00Was: $180.95Subtotal: -
On Sale
PROX Crankshaft Bearing/Seal Kit - KTM 23.CBS64007
PROX
MSRP: $169.95Now: $136.00Was: $169.95A worn crankshaft bearing or degraded seal compromises engine reliability and can lead to catastrophic damage if left unaddressed. The PROX Crankshaft Bearing/Seal Kit restores OEM-specification performance with factory-engineered components, ensuring...09240708- SKU:
- 09240708
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
MSRP: $169.95Now: $136.00Was: $169.95 -
On Sale
PROX Crankshaft Bearing/Seal Kit - Husaberg/Husqvarna/KTM 23.CBS64012
PROX
MSRP: $95.95Now: $76.00Was: $95.95A crankshaft bearing and seal kit is essential maintenance for keeping your engine reliable through demanding riding conditions. ProX's OEM-specification design ensures your crankshaft operates with minimal friction and maximum protection against...09240709- SKU:
- 09240709
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
MSRP: $95.95Now: $76.00Was: $95.95 -
On Sale
PROX Crankshaft Bearing/Seal Kit - Gas-Gas/Husqvarna/KTM 23.CBS64016
PROX
MSRP: $169.95Now: $136.00Was: $169.95A crankshaft bearing and seal kit is essential maintenance for keeping your two-stroke engine running at peak performance and reliability. Over time, factory bearings wear and seals degrade, allowing oil leakage and contamination that compromise...09240710- SKU:
- 09240710
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $169.95Now: $136.00Was: $169.95 -
On Sale
PROX Crankshaft Bearing/Seal Kit - Beta 23.CBS73013
PROX
MSRP: $73.95Now: $59.00Was: $73.95Crankshaft Bearing/Seal Kit - Beta Manufactured at leading OEM factories, Made to exact OEM specifications, to ensure maximum quality and performance, Includes all necessary bearings/seals for a component*s replacement, ProX bearings offer high...09240711- SKU:
- 09240711
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
MSRP: $73.95Now: $59.00Was: $73.95 -
On Sale
PROX Crankshaft Bearing/Seal Kit - Beta 23.CBS73022
PROX
MSRP: $123.95Now: $99.00Was: $123.95Crankshaft Bearing/Seal Kit - Beta Manufactured at leading OEM factories, Made to exact OEM specifications, to ensure maximum quality and performance, Includes all necessary bearings/seals for a component*s replacement, ProX bearings offer high...09240712- SKU:
- 09240712
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $123.95Now: $99.00Was: $123.95 -
On Sale
PROX Crankshaft Bearing/Seal Kit - Beta 23.CBS73050
PROX
MSRP: $106.95Now: $85.00Was: $106.95Crankshaft Bearing/Seal Kit - Beta Manufactured at leading OEM factories, Made to exact OEM specifications, to ensure maximum quality and performance, Includes all necessary bearings/seals for a component*s replacement, ProX bearings offer high...09240713- SKU:
- 09240713
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
MSRP: $106.95Now: $85.00Was: $106.95 -
On Sale
PROX Crankshaft Bearing/Seal Kit - Gas Gas/Husqvarna/KTM 23.CBS63017
PROX
MSRP: $169.95Now: $136.00Was: $169.95A worn crankshaft bearing or degraded seal compromises engine reliability and can lead to catastrophic internal damage. This OEM-specification kit delivers complete bearing and seal replacement, restoring your engine's structural integrity and oil...09240707- SKU:
- 09240707
- Availability:
- Ships Same Business Day
- Weight:
- 1.03 LBS
MSRP: $169.95Now: $136.00Was: $169.95 -
MOOSE RACING Crank Bearing - YZ 65/85 24-1117
MOOSE RACING
$53.95A worn or failing crankshaft bearing will quickly rob your YZ 65/85 of reliability and throttle response—two things you can't afford to lose on the track or trail. MOOSE Racing's precision bearings restore the tight tolerances your engine demands, while...09240604- SKU:
- 09240604
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- BALL
$53.95 -
MOOSE RACING Crank Bearing - KXF/RMZ 24-1081
MOOSE RACING
$56.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240103- SKU:
- 09240103
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- BALL
- APPLICATION:
- CRANKSHAFT
$56.95 -
MOOSE RACING Crank Bearing - Husqvarna 24-1107
MOOSE RACING
$74.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240228- SKU:
- 09240228
- Availability:
- Ships Same Business Day
- Weight:
- 1.12 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- BALL
$74.95 -
MOOSE RACING Crank Bearing - Husqvarna 24-1108
MOOSE RACING
$77.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240229- SKU:
- 09240229
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- RIDING STYLE:
- STREET
$77.95 -
MOOSE RACING Crank Bearing - PW50 24-1061
MOOSE RACING
$41.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240237- SKU:
- 09240237
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
$41.95 -
MOOSE RACING Crank Bearing - Gas Gas 24-1115
MOOSE RACING
$160.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240290- SKU:
- 09240290
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- RIDING STYLE:
- STREET
$160.95 -
MOOSE RACING Crank Bearing - XR/TRX 24-1031
MOOSE RACING
$37.95Your 2-stroke engine's crankshaft depends on precision bearings to handle extreme rotational forces—and worn or inadequate bearings will cost you performance and reliability. The MOOSE RACING Crank Bearing Kit (24-1031) delivers OEM-grade precision...A241031- SKU:
- A241031
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- RIDING STYLE:
- ATV
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- BEARING
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- BALL
$37.95 -
MOOSE RACING Crank Bearing with Seals - KDX 24-1045
MOOSE RACING
$85.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke enginesA241045- SKU:
- A241045
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING
- UNITS:
- KIT
- TYPE:
- BALL
$85.95
