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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HOT RODS Crank Bearings K231
HOT RODS
$94.29A quality crankshaft assembly is only as reliable as the bearings supporting it. The HOT RODS K231 Crank Bearings are precision-engineered main bearing and seal kits designed to work seamlessly with HOT RODS crankshaft assemblies, ensuring proper load...09240055- 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
$94.29 -
HOT RODS Crank Bearings K232
HOT RODS
$85.95A crankshaft assembly is only as reliable as the bearings that support it. The HOT RODS K232 crank bearing kit delivers precision-engineered main bearings and seals that eliminate play, reduce friction, and ensure consistent oil pressure throughout your...09240056- 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
$85.95Qty in Cart: 0Quantity:Price:$85.95Subtotal: -
HOT RODS Crank Bearings K233
HOT RODS
$64.95A crankshaft is only as reliable as its bearings. The HOT RODS K233 crank bearing kit delivers the precision tolerances and material quality required to support high-RPM loads without compromise, ensuring your engine maintains structural integrity during...09240057- 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
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
HOT RODS Crank Bearings K234
HOT RODS
$118.67A crankshaft assembly is only as reliable as its bearing support system. The HOT RODS K234 Crank Bearings deliver precision-engineered main bearing and seal kits designed to handle the demanding loads of high-performance engines while maintaining...09240058- 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
$118.67 -
HOT RODS Crank Bearings K235
HOT RODS
$83.69A quality crankshaft assembly is only as reliable as its bearing and seal kit. The HOT RODS K235 crank bearings are precision-engineered to handle the extreme pressures and thermal cycling that come with high-performance engine builds. These bearings...09240059- 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
$83.69 -
HOT RODS Crank Bearings K042
HOT RODS
$100.95A crankshaft assembly is only as reliable as its bearing foundation. The HOT RODS K042 crank bearing and seal kit ensures proper load distribution, reduces friction, and maintains critical oil pressure throughout your engine's operating range. Whether...09240159- 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
$100.95Qty in Cart: 0Quantity:Price:$100.95Subtotal: -
HOT RODS Crank Bearings K043
HOT RODS
$127.15A crankshaft is only as reliable as its bearing package. The HOT RODS K043 Crank Bearings deliver precision-engineered main bearing and seal kits that ensure proper load distribution, reduce friction, and extend engine life during high-RPM operation...09240160- 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
$127.15 -
HOT RODS Crank Bearings K050
HOT RODS
$112.31A crankshaft is only as reliable as its bearings. The HOT RODS K050 Crank Bearings are precision-engineered main bearing and seal kits designed to work seamlessly with HOT RODS crankshaft assemblies, ensuring proper clearances, load distribution, and oil...09240161- 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
$112.31 -
HOT RODS Crank Bearings K056
HOT RODS
$83.95A crankshaft is only as reliable as its bearing surfaces. The HOT RODS K056 crank bearing and seal kit delivers the precision fit and material quality required to maximize power transfer while maintaining long-term durability under high RPM loads...09240166- 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
$83.95Qty in Cart: 0Quantity:Price:$83.95Subtotal: -
HOT RODS Crank Bearings K052
HOT RODS
$99.59A crankshaft is only as reliable as its bearing support system. The HOT RODS K052 crank bearing kit ensures precision fitment and optimal load distribution across your engine's most critical rotating assembly, eliminating premature wear and catastrophic...09240167- 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
$99.59 -
HOT RODS Crank Bearings K044
HOT RODS
$112.31A quality crankshaft assembly demands equally reliable main bearings and seals to ensure proper load distribution, minimize friction, and maintain critical oil pressure throughout your engine's operating range. HOT RODS K044 crank bearings are engineered...09240168- 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
$112.31 -
HOT RODS Crank Bearings K045
HOT RODS
$83.69A crankshaft is only as reliable as its bearings. The HOT RODS Crank Bearings K045 deliver precision tolerances and superior load-carrying capacity, ensuring your crank stays centered and your engine maintains consistent performance under high RPM stress...09240169- 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
$83.69 -
HOT RODS Crank Bearings K041
HOT RODS
$88.99A crankshaft is only as reliable as its bearings. The HOT RODS K041 crank bearing and seal kit delivers the precision tolerances and material quality needed to handle sustained high-RPM loads without premature wear or failure. Whether you're rebuilding a...09240116- 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
$88.99 -
HOT RODS Crank Bearings K048
HOT RODS
$126.09A quality crankshaft is only as reliable as the bearings supporting it. The HOT RODS Crank Bearings K048 are precision-engineered main bearing and seal kits designed to work seamlessly with HOT RODS crankshaft assemblies, ensuring proper load...09240119- 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
$126.09 -
HOT RODS Crank Bearings K058
HOT RODS
$116.95A crankshaft is only as reliable as its bearing package. The HOT RODS K058 crank bearings deliver precision-engineered main bearing and seal kits that ensure proper load distribution, reduce friction, and extend engine longevity—critical when you're...09240126- 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
$116.95Qty in Cart: 0Quantity:Price:$116.95Subtotal: -
HOT RODS Crank Bearings K093
HOT RODS
$169.55A quality crankshaft seal kit is non-negotiable when installing a HOT RODS crankshaft assembly—it's your first line of defense against oil leakage and contamination. The K093 Seal Kit ensures a proper, leak-free installation by providing OEM-spec seals...09240402- 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
$169.55 -
HOT RODS Crank Bearings K089
HOT RODS
$86.87A quality crankshaft seal kit is essential insurance against oil leakage and contamination that can compromise engine reliability and performance. The HOT RODS K089 Crank Bearings Seal Kit ensures proper fluid containment during and after crankshaft...09240403- SKU:
- 09240403
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- PRODUCT NAME:
- BEARING SET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$86.87 -
Wiseco Top End Bearing 12x16x15.8 Kawasaki KFX50 2003-2009 B1000
WISECO
$25.95The Wiseco B1000 top end bearing delivers the precision fit and durability your KFX50 needs to handle consistent high-RPM performance. Factory OEM bearings wear quickly under aggressive riding or racing conditions—this replacement maintains the tight...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
$25.95 -
Wiseco Top End Bearing for Suzuki LT250R QuadRacer 1985-1992 B1002
WISECO
$25.95The Wiseco B1002 top end bearing is purpose-built for the demanding conditions of QuadRacer competition and high-rpm trail riding. A worn or failing bearing kills engine efficiency, increases friction, and risks catastrophic seizure—this Wiseco unit...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
$25.95 -
Wiseco Top End Bearing Yamaha YFZ350 Banshee 1987-2006 B1005
WISECO
$25.95The Wiseco B1005 top end bearing is essential for maintaining precise piston-to-cylinder clearances and supporting sustained high-RPM operation in your YFZ350 Banshee. A worn or inadequate bearing accelerates top-end wear and compromises engine...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
$25.95
