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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Wossner 12x15x14.5 mm Top End Bearing for KTM 50 SX 2007-2022 N1001
WOSSNER
$18.50The WOSSNER Top End Bearing is engineered for high performance and durability, making it an essential component for your 50SX motorcycle. With precise dimensions of 12 mm x 15 mm x 14.5 mm, this bearing ensures optimal fit and function, enhancing the...09240494- SKU:
- 09240494
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER METRIC:
- 12 MM
- LENGTH METRIC:
- 14.5 MM
- PRODUCT NAME:
- BEARING
- OUTSIDE DIAMETER METRIC:
- 15 MM
- APPLICATION:
- CONNECTING ROD
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- EACH
$18.50 -
Wossner Top End Bearing 14x18x16.5mm for 2002-2022 Yamaha YZ85 N1006
WOSSNER
$18.50The WOSSNER Top End Bearing N1006 is engineered for high performance and durability, making it an essential component for your engine's top end assembly. With precise dimensions and superior materials, this bearing ensures smooth operation and longevity,...09240447- SKU:
- 09240447
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- BEARING
- LENGTH METRIC:
- 16.5 MM
- OUTSIDE DIAMETER METRIC:
- 18 MM
- TYPE:
- TOP END
- UNITS:
- EACH
- APPLICATION:
- CONNECTING ROD
- INSIDE DIAMETER METRIC:
- 14 MM
- RIDING STYLE:
- OFF-ROAD
$18.50 -
Wossner Top End Bearing for Kawasaki KX85 2001-2013 N1007
WOSSNER
$18.50The WOSSNER Top End Bearing is engineered for optimal performance and durability, ensuring a reliable connection in high-stress environments. With precise dimensions of 14 mm x 18 mm x 17.2 mm, it is designed to fit seamlessly in various applications,...09240448- SKU:
- 09240448
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- LENGTH METRIC:
- 17.2 MM
- OUTSIDE DIAMETER METRIC:
- 18 MM
- TYPE:
- TOP END
- UNITS:
- EACH
- APPLICATION:
- CONNECTING ROD
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER METRIC:
- 18 MM
- PRODUCT NAME:
- BEARING
$18.50 -
Wossner Top End Bearing 15x19x19.5 mm for 2007-2014 KTM 125 SX N1010
WOSSNER
$18.50The WOSSNER Top End Bearing is engineered for optimal performance and reliability in high-demand applications. With precise dimensions of 15 mm x 19 mm x 19.5 mm, this bearing ensures a perfect fit and smooth operation. Designed to withstand extreme...09240450- SKU:
- 09240450
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 19 MM
- APPLICATION:
- CONNECTING ROD
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER METRIC:
- 15 MM
- LENGTH METRIC:
- 19.5 MM
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
$18.50 -
Wossner Top End Bearing 18 mm x 22 mm x 19.8 mm N1020
WOSSNER
$18.50The WOSSNER Top End Bearing is engineered for optimal performance and durability in high-demand applications. Designed with precision, this bearing ensures smooth operation and longevity, making it an essential component for your machinery. Upgrade your...09240456- SKU:
- 09240456
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- LENGTH METRIC:
- 19.8 MM
- OUTSIDE DIAMETER METRIC:
- 22 MM
- APPLICATION:
- CONNECTING ROD
- INSIDE DIAMETER METRIC:
- 18 MM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$18.50 -
Wossner Top End Bearing 18x22x21.8mm Honda CR250R N1021
WOSSNER
$18.50The WOSSNER Top End Bearing is engineered for high-performance applications, providing exceptional durability and reliability. Designed to fit a variety of engines, this bearing ensures optimal performance and longevity under demanding conditions...09240457- SKU:
- 09240457
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER METRIC:
- 18 MM
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- APPLICATION:
- CONNECTING ROD
- OUTSIDE DIAMETER METRIC:
- 22 MM
- LENGTH METRIC:
- 21.8 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$18.50 -
Wossner Top End Bearing 18x23x21.8mm Suzuki RM250 1977-2008 N1022
WOSSNER
$18.50Experience unparalleled performance with the WOSSNER Top End Bearing, designed for optimal durability and efficiency in high-demand applications. This precision-engineered bearing ensures smooth operation and longevity, making it an essential component...09240458- SKU:
- 09240458
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER METRIC:
- 18 MM
- TYPE:
- TOP END
- LENGTH METRIC:
- 21.8 MM
- OUTSIDE DIAMETER METRIC:
- 23 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- CONNECTING ROD
- UNITS:
- EACH
$18.50 -
Wossner Top End Bearing for Kawasaki KX65 2000-2022 N1036
WOSSNER
$18.50Experience superior performance and reliability with the WOSSNER Top End Bearing, designed specifically for high-demand applications. This precision-engineered bearing ensures smooth operation and longevity, making it an essential component for any...09240459- SKU:
- 09240459
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 16 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- EACH
- APPLICATION:
- CONNECTING ROD
- INSIDE DIAMETER METRIC:
- 12 MM
- LENGTH METRIC:
- 15.8 MM
$18.50 -
On Sale
Wiseco Top End Bearing 19x24x24.8 for Kawasaki KX500 1988-2004 B1036
WISECO
MSRP: $23.99Now: $20.00Was: $23.99Engineered for peak performance, the WISECO Top End Bearing combines advanced materials with precision manufacturing to ensure reliability and efficiency. Its high-silicon aluminum alloy construction provides exceptional strength, while the case-hardened...09240123- SKU:
- 09240123
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- SILICONE
- OUTSIDE DIAMETER METRIC:
- 24 MM
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- INSIDE DIAMETER METRIC:
- 19 MM
- LENGTH METRIC:
- 24.8 MM
- PRODUCT NAME:
- BEARING
- APPLICATION:
- PISTON
MSRP: $23.99Now: $20.00Was: $23.99 -
VINTCO Main Bearing and Seal Kit - Honda KMB003
VINTCO
$34.95Main Bearing and Seal Kit - Honda Includes necessary bearings and seals to complete crankshaft installation, Includes premium OEM quality Japanese manufactured bearings09240651- SKU:
- 09240651
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
$34.95Qty in Cart: 0Quantity:Price:$34.95Subtotal: -
VINTCO Main Bearing and Seal Kit - Suzuki KMB018
VINTCO
$59.95Main Bearing and Seal Kit - Suzuki Includes necessary bearings and seals to complete crankshaft installation, Includes premium OEM quality Japanese manufactured bearings09240670- SKU:
- 09240670
- Availability:
- Ships Same Business Day
- Weight:
- 1.21 LBS
$59.95 -
VINTCO Main Bearing and Seal Kit - Suzuki KMB019
VINTCO
$59.95Main Bearing and Seal Kit - KMB019 Complete kit for crankshaft installation Includes all necessary bearings and seals Premium OEM quality for reliable performance Manufactured in Japan for superior craftsmanship Designed specifically...09240671- SKU:
- 09240671
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
MOOSE RACING Crank Bearing GAS EC 24-1118
MOOSE RACING
$89.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240603- SKU:
- 09240603
- Availability:
- Ships Same Business Day
- Weight:
- 1.26 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
- TYPE:
- BALL
- RIDING STYLE:
- STREET
$89.95 -
MOOSE RACING Crank Bearing - KTM 24-1099
MOOSE RACING
$39.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240221- SKU:
- 09240221
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- TYPE:
- BALL
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$39.95 -
MOOSE RACING Crank Bearings and Seals 24-1047
MOOSE RACING
$70.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240007- SKU:
- 09240007
- Availability:
- Ships Same Business Day
- Weight:
- 1.69 LBS
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$70.95 -
MOOSE RACING Crank Bearing - Yamaha 24-1066
MOOSE RACING
$84.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240214- SKU:
- 09240214
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
$84.95Qty in Cart: 0Quantity:Price:$84.95Subtotal: -
MOOSE RACING Crank Bearing - KTM 24-1097
MOOSE RACING
$134.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240219- SKU:
- 09240219
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
$134.95 -
MOOSE RACING Crank Bearing - KTM 24-1098
MOOSE RACING
$148.95Precision crank bearings, Kits contain right and left crankshaft bearings, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines09240220- SKU:
- 09240220
- Availability:
- Ships Same Business Day
- Weight:
- 1.26 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
$148.95 -
SHINDY Needle Bearing - 18 mm x 23 mm x 24 mm 10-101
SHINDY
$10.95Piston pin needle cage bearings are manufactured from precision bearings and high-quality housing material, Each bearing is packaged in an individual box for easy identificationNB1452- SKU:
- NB1452
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- LENGTH:
- 24 MM
- LENGTH METRIC:
- 24 MM
- OUTSIDE DIAMETER METRIC:
- 23 MM
- APPLICATION:
- PISTON
- OUTSIDE DIAMETER:
- 23 MM
- RIDING STYLE:
- ATV
- TYPE:
- NEEDLE
- UNITS:
- EACH
- INSIDE DIAMETER:
- 18 MM
- INSIDE DIAMETER METRIC:
- 18 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$10.95Qty in Cart: 0Quantity:Price:$10.95Subtotal: -
SHINDY Needle Bearing - 16 mm x 21 mm x 19.5 mm 10-251
SHINDY
$9.95Piston pin needle cage bearings are manufactured from precision bearings and high-quality housing material, Each bearing is packaged in an individual box for easy identificationNB1463- SKU:
- NB1463
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- INSIDE DIAMETER METRIC:
- 16 MM
- LENGTH METRIC:
- 19.5 MM
- TYPE:
- NEEDLE
- INSIDE DIAMETER:
- 16 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- LENGTH:
- 19,5 MM
- OUTSIDE DIAMETER:
- 21 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- PISTON
- OUTSIDE DIAMETER METRIC:
- 21 MM
- UNITS:
- EACH
$9.95
