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!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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On Sale
HOT RODS Crank Bearings K231
HOT RODS
MSRP: $88.95Now: $80.06Was: $88.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240055- SKU:
- 09240055
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $88.95Now: $80.06Was: $88.95 -
On Sale
HOT RODS Crank Bearings K232
HOT RODS
MSRP: $85.95Now: $77.36Was: $85.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240056- SKU:
- 09240056
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $85.95Now: $77.36Was: $85.95Qty in Cart: 0Quantity:Price:MSRP: $85.95Now: $77.36Was: $85.95Subtotal: -
On Sale
HOT RODS Crank Bearings K233
HOT RODS
MSRP: $64.95Now: $58.46Was: $64.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240057- SKU:
- 09240057
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- BALL
MSRP: $64.95Now: $58.46Was: $64.95Qty in Cart: 0Quantity:Price:MSRP: $64.95Now: $58.46Was: $64.95Subtotal: -
On Sale
HOT RODS Crank Bearings K234
HOT RODS
MSRP: $111.95Now: $100.76Was: $111.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240058- SKU:
- 09240058
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
MSRP: $111.95Now: $100.76Was: $111.95 -
On Sale
HOT RODS Crank Bearings K235
HOT RODS
MSRP: $78.95Now: $71.06Was: $78.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240059- SKU:
- 09240059
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
MSRP: $78.95Now: $71.06Was: $78.95 -
On Sale
HOT RODS Crank Bearings K042
HOT RODS
MSRP: $100.95Now: $90.86Was: $100.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240159- SKU:
- 09240159
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- BALL
MSRP: $100.95Now: $90.86Was: $100.95Qty in Cart: 0Quantity:Price:MSRP: $100.95Now: $90.86Was: $100.95Subtotal: -
On Sale
HOT RODS Crank Bearings K043
HOT RODS
MSRP: $119.95Now: $107.96Was: $119.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240160- SKU:
- 09240160
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $119.95Now: $107.96Was: $119.95 -
On Sale
HOT RODS Crank Bearings K050
HOT RODS
MSRP: $105.95Now: $95.36Was: $105.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240161- SKU:
- 09240161
- Availability:
- Ships Same Business Day
- Weight:
- 1.58 LBS
- UNITS:
- SET
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
MSRP: $105.95Now: $95.36Was: $105.95 -
On Sale
HOT RODS Crank Bearings K056
HOT RODS
MSRP: $83.95Now: $75.56Was: $83.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240166- SKU:
- 09240166
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- MAIN CRANKSHAFT
- TYPE:
- BALL
- UNITS:
- SET
- RIDING STYLE:
- STREET
MSRP: $83.95Now: $75.56Was: $83.95Qty in Cart: 0Quantity:Price:MSRP: $83.95Now: $75.56Was: $83.95Subtotal: -
On Sale
HOT RODS Crank Bearings K052
HOT RODS
MSRP: $93.95Now: $84.56Was: $93.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240167- SKU:
- 09240167
- Availability:
- Ships Same Business Day
- Weight:
- 1.03 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
MSRP: $93.95Now: $84.56Was: $93.95 -
On Sale
HOT RODS Crank Bearings K044
HOT RODS
MSRP: $105.95Now: $95.36Was: $105.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240168- SKU:
- 09240168
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
MSRP: $105.95Now: $95.36Was: $105.95 -
On Sale
HOT RODS Crank Bearings K045
HOT RODS
MSRP: $78.95Now: $71.06Was: $78.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240169- SKU:
- 09240169
- Availability:
- Ships Same Business Day
- Weight:
- 0.89 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- BALL
MSRP: $78.95Now: $71.06Was: $78.95 -
On Sale
HOT RODS Crank Bearings K041
HOT RODS
MSRP: $83.95Now: $75.56Was: $83.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240116- SKU:
- 09240116
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $83.95Now: $75.56Was: $83.95 -
On Sale
HOT RODS Crank Bearings K048
HOT RODS
MSRP: $118.95Now: $107.06Was: $118.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240119- SKU:
- 09240119
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $118.95Now: $107.06Was: $118.95 -
On Sale
HOT RODS Crank Bearings K058
HOT RODS
MSRP: $116.95Now: $105.26Was: $116.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240126- SKU:
- 09240126
- Availability:
- Ships Same Business Day
- Weight:
- 1.62 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- UNITS:
- SET
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
MSRP: $116.95Now: $105.26Was: $116.95Qty in Cart: 0Quantity:Price:MSRP: $116.95Now: $105.26Was: $116.95Subtotal: -
On Sale
HOT RODS Crank Bearings K093
HOT RODS
MSRP: $159.95Now: $143.96Was: $159.95Seal kits complement installation of Hot Rods crankshaft assemblies09240402- SKU:
- 09240402
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING SET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $159.95Now: $143.96Was: $159.95 -
On Sale
HOT RODS Crank Bearings K089
HOT RODS
MSRP: $81.95Now: $73.76Was: $81.95Seal kits complement installation of Hot Rods crankshaft assemblies09240403- SKU:
- 09240403
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- PRODUCT NAME:
- BEARING SET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $81.95Now: $73.76Was: $81.95 -
Wiseco Top End Bearing 12x16x15.8 Kawasaki KFX50 2003-2009 B1000
WISECO
$23.99Engineered for performance, the WISECO Top End Bearing B1000 is crafted from a premium high-silicon aluminum alloy, ensuring exceptional strength and durability. Designed to meet the rigorous demands of high-speed engines, these bearings provide smooth...B1000- SKU:
- B1000
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- APPLICATION:
- PISTON
- INSIDE DIAMETER METRIC:
- 12 MM
- MATERIAL:
- SILICONE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- LENGTH METRIC:
- 15.8 MM
- OUTSIDE DIAMETER METRIC:
- 16 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- EACH
$23.99 -
Wiseco Top End Bearing for Suzuki LT250R QuadRacer 1985-1992 B1002
WISECO
$23.99Engineered for performance and durability, the WISECO Top End Bearing B1002 is crafted from a premium high-silicon aluminum alloy. This ensures exceptional strength and reliability, making it ideal for high-speed engine applications. Designed to meet...B1002- SKU:
- B1002
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- PISTON
- INSIDE DIAMETER METRIC:
- 18 MM
- MATERIAL:
- ALUMINUM
- MATERIAL:
- SILICONE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- OUTSIDE DIAMETER METRIC:
- 23 MM
- LENGTH METRIC:
- 23.8 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- EACH
$23.99 -
Wiseco Top End Bearing Yamaha YFZ350 Banshee 1987-2006 B1005
WISECO
$23.99Engineered for peak performance, the WISECO Top End Bearing B1005 is crafted from a premium high-silicon aluminum alloy, ensuring unparalleled strength and reliability. Designed to withstand the rigors of high-speed operation, these bearings are...B1005- SKU:
- B1005
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- LENGTH METRIC:
- 22.5 MM
- PRODUCT NAME:
- BEARING
- MATERIAL:
- ALUMINUM
- OUTSIDE DIAMETER METRIC:
- 21 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- EACH
- APPLICATION:
- PISTON
- INSIDE DIAMETER METRIC:
- 16 MM
- MATERIAL:
- SILICONE
$23.99
