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 Top End Bearing WB144
HOT RODS
$22.95The piston end of your connecting rod endures extreme cyclic loading with every combustion event—inadequate bearing support here compromises both reliability and peak horsepower delivery. The HOT RODS Top End Bearing WB144 is a precision needle-cage...09240578- SKU:
- 09240578
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- CONNECTING ROD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- TYPE:
- WRIST PIN
$22.95 -
HOT RODS Crank Bearings K002
HOT RODS
$78.95A quality crankshaft assembly is only as reliable as its bearing system. The HOT RODS Crank Bearings K002 deliver precision-engineered main bearing and seal kits designed to handle the extreme pressures and rotational speeds of high-performance engines...09240021- SKU:
- 09240021
- Availability:
- Ships Same Business Day
- Weight:
- 0.87 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
$78.95 -
HOT RODS Crank Bearings K003
HOT RODS
$107.95A crankshaft is only as reliable as its bearings. The HOT RODS K003 crank bearing and seal kit ensures proper load distribution, reduced friction, and maximum longevity in high-RPM applications. Whether you're running a stock rebuild or a heavily...09240022- SKU:
- 09240022
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$107.95 -
HOT RODS Crank Bearings K019
HOT RODS
$85.95A quality crankshaft assembly is only as reliable as its bearing package. The HOT RODS K019 Crank Bearings deliver precision-engineered main bearing and seal kits that ensure proper load distribution, minimize friction, and maintain critical clearances...09240023- SKU:
- 09240023
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- TYPE:
- BALL
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$85.95Qty in Cart: 0Quantity:Price:$85.95Subtotal: -
HOT RODS Crank Bearings K004
HOT RODS
$78.95A quality crankshaft is only as reliable as the bearings supporting it. HOT RODS K004 crank bearings are precision-engineered main bearing and seal kits designed to work seamlessly with HOT RODS crankshaft assemblies, ensuring proper load distribution,...09240024- SKU:
- 09240024
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- BALL
$78.95 -
HOT RODS Crank Bearings K227
HOT RODS
$129.95A crankshaft assembly is only as reliable as the bearings supporting it. The HOT RODS K227 crank bearing and seal kit ensures proper load distribution, reduces friction, and maintains critical clearances—essential for sustained high-RPM performance and...09240026- SKU:
- 09240026
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
$129.95Qty in Cart: 0Quantity:Price:$129.95Subtotal: -
HOT RODS Crank Bearings K020
HOT RODS
$70.97A crankshaft is only as reliable as its bearings. The HOT RODS K020 crank bearing and seal kit ensures proper load distribution, reduced friction, and extended engine longevity—critical for both street and track applications where bearing failure means...09240027- SKU:
- 09240027
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- BALL
$70.97Qty in Cart: 0Quantity:Price:$70.97Subtotal: -
HOT RODS Crank Bearings K006
HOT RODS
$117.95A crankshaft is only as reliable as its bearings. The HOT RODS Crank Bearings K006 deliver precision-engineered main bearing and seal kits that eliminate play, reduce friction, and ensure consistent oil delivery under extreme loads. Whether you're...09240028- SKU:
- 09240028
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- TYPE:
- BALL
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
$117.95 -
Wossner Top End Bearing Kawasaki KX 500 1988-2004 N1052
WOSSNER
$18.50Top-end bearings are critical wear items in high-revving two-stroke engines, and a worn bearing will quickly degrade engine efficiency and create catastrophic damage if left unaddressed. The Wossner N1052 is engineered to OEM specifications for the...09240463- SKU:
- 09240463
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- LENGTH METRIC:
- 24.8 MM
- PRODUCT NAME:
- BEARING
- TYPE:
- TOP END
- INSIDE DIAMETER METRIC:
- 19 MM
- OUTSIDE DIAMETER METRIC:
- 24 MM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- CONNECTING ROD
- UNITS:
- EACH
$18.50Qty in Cart: 0Quantity:Price:$18.50Subtotal: -
Wossner Top End Bearing 18x22x23.5 mm Kawasaki KX250 2002-2007 N1049
WOSSNER
$18.50The Wossner Top End Bearing is a critical wear item that directly impacts engine reliability and performance in your KX250. Over time, original bearings degrade under the intense heat and friction of high-RPM operation, leading to increased play, noise,...09240462- SKU:
- 09240462
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- INSIDE DIAMETER METRIC:
- 18 MM
- PRODUCT NAME:
- BEARING
- APPLICATION:
- CONNECTING ROD
- RIDING STYLE:
- OFF-ROAD
- LENGTH METRIC:
- 23.5 MM
- TYPE:
- TOP END
- UNITS:
- EACH
- OUTSIDE DIAMETER METRIC:
- 22 MM
$18.50 -
Wossner Top End Bearing for Yamaha YZ125 2005-2022 N1047
WOSSNER
$18.50The top end bearing is critical to maintaining proper crankshaft-to-connecting rod alignment and minimizing friction at peak RPM—neglecting this component leads to catastrophic engine failure. The Wossner N1047 is engineered to OEM tolerances for the...09240461- SKU:
- 09240461
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- LENGTH METRIC:
- 17.3 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER METRIC:
- 15 MM
- TYPE:
- TOP END
- UNITS:
- EACH
- APPLICATION:
- CONNECTING ROD
- OUTSIDE DIAMETER METRIC:
- 19 MM
$18.50 -
Wossner Top End Bearing for 1998-2022 KTM 65 SX N1037
WOSSNER
$18.50The top end bearing on your KTM 65 SX takes a beating during aggressive riding and racing—worn bearings lead to increased friction, excessive play, and premature piston wear. Wossner's precision-engineered top end bearing is built to OEM specifications...09240460- SKU:
- 09240460
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- LENGTH METRIC:
- 16.3 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- APPLICATION:
- CONNECTING ROD
- INSIDE DIAMETER METRIC:
- 12 MM
- UNITS:
- EACH
- OUTSIDE DIAMETER METRIC:
- 15 MM
$18.50 -
HOT RODS Crank Bearings K067
HOT RODS
$165.95A crankshaft is only as reliable as the bearings supporting it. The HOT RODS K067 crank bearing kit ensures precise fitment and consistent oil pressure across all main bearing journals, eliminating play that compromises engine stability and longevity...09240234- SKU:
- 09240234
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
$165.95 -
HOT RODS Crank Bearings K066
HOT RODS
$118.95A quality crankshaft is only as reliable as the bearings supporting it. The HOT RODS K066 crank bearing kit delivers precision-engineered main bearing and seal components designed to handle the loads and RPM demands of high-performance engines. Whether...09240233- SKU:
- 09240233
- Availability:
- Ships Same Business Day
- Weight:
- 1.28 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
$118.95 -
HOT RODS Crank Bearings K065
HOT RODS
$118.95A crankshaft assembly is only as reliable as its bearing system. The HOT RODS K065 Crank Bearings are precision-engineered main bearing and seal kits designed to work seamlessly with HOT RODS crankshaft assemblies, ensuring proper load distribution,...09240232- SKU:
- 09240232
- Availability:
- Ships Same Business Day
- Weight:
- 1.07 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN CRANKSHAFT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- BALL
$118.95 -
HOT RODS Crank Bearings K064
HOT RODS
$83.95A crankshaft is only as reliable as its bearing system. The HOT RODS K064 Crank Bearings deliver the precision fit and load capacity you need to support high-RPM operation without premature wear or catastrophic failure. Whether you're running a freshly...09240231- SKU:
- 09240231
- Availability:
- Ships Same Business Day
- Weight:
- 0.77 LBS
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
$83.95 -
HOT RODS Crank Bearings K057
HOT RODS
$107.95A crankshaft is only as reliable as the bearings supporting it. The HOT RODS K057 crank bearing kit delivers the precision tolerances and material integrity required to handle high-RPM loads without premature wear or catastrophic failure. Whether you're...09240213- SKU:
- 09240213
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
- TYPE:
- BALL
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
$107.95 -
HOT RODS Crank Bearings K063
HOT RODS
$116.95A crankshaft is only as reliable as its bearings. The HOT RODS K063 crank bearing kit delivers precision-engineered main bearing and seal components that ensure proper load distribution, reduce friction, and maintain critical clearances during high-RPM...09240212- SKU:
- 09240212
- Availability:
- Ships Same Business Day
- Weight:
- 1.64 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$116.95 -
HOT RODS Crank Bearings K022
HOT RODS
$112.95A crankshaft is only as reliable as the bearings that support it. The HOT RODS K022 crank bearing and seal kit ensures proper load distribution, reduces friction, and maintains critical clearances under extreme RPM and boost conditions...09240036- SKU:
- 09240036
- Availability:
- Ships Same Business Day
- Weight:
- 1.57 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- UNITS:
- SET
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$112.95 -
HOT RODS Crank Bearings K021
HOT RODS
$105.95A crankshaft is only as reliable as its bearings. The HOT RODS K021 crank bearing kit delivers the precision tolerances and material quality required to support high-RPM loads without premature wear or failure. Whether you're rebuilding a stock engine or...09240035- SKU:
- 09240035
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
- TYPE:
- BALL
- UNITS:
- SET
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
$105.95
