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
-
MOOSE RACING Crank Bearings and Seals - YZ125 24-1062
MOOSE RACING
$78.95A worn crankshaft bearing is one of the fastest ways to turn a healthy 2-stroke into a seized paperweight. The MOOSE RACING Crank Bearings and Seals kit (YZ125 24-1062) replaces both left and right bearings with precision-matched components, restoring...09240019- SKU:
- 09240019
- Availability:
- Ships Same Business Day
- Weight:
- 0.87 LBS
- TYPE:
- BALL
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$78.95 -
MOOSE RACING Crank Bearing - Yamaha 24-1072
MOOSE RACING
$74.95Crank bearings are the foundation of engine reliability—especially in high-rpm 2-stroke applications where friction and heat demand precision components. MOOSE Racing's 24-1072 kit delivers OEM-quality bearings with fluorocarbon seals engineered to...09240215- SKU:
- 09240215
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
$74.95 -
MOOSE RACING Crank Bearing - Yamaha 24-1073
MOOSE RACING
$54.95Crank bearing failure is one of the fastest ways to end a riding season—and the MOOSE RACING 24-1073 kit keeps your Yamaha 2-stroke running strong. These precision bearings handle the extreme rotational loads that stock bearings struggle with, while the...09240216- SKU:
- 09240216
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- BALL
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
$54.95Qty in Cart: 0Quantity:Price:$54.95Subtotal: -
MOOSE RACING Crank Bearing - KTM 24-1101
MOOSE RACING
$75.95Crankshaft bearing wear is one of the most common failure points in 2-stroke engines, and a failed bearing can leave you stranded mid-race or mid-ride. MOOSE Racing's precision crank bearing kit delivers the durability and low-friction performance your...09240223- SKU:
- 09240223
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$75.95 -
MOOSE RACING Crank Bearing - KTM 24-1103
MOOSE RACING
$67.95Worn or degraded crankshaft bearings will destroy engine reliability and performance, making replacement essential for any serious 2-stroke rebuild or maintenance routine. MOOSE Racing's precision-engineered bearing kit ensures minimal friction losses at...09240225- SKU:
- 09240225
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- APPLICATION:
- CRANKSHAFT
- UNITS:
- KIT
- TYPE:
- BALL
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
$67.95 -
MOOSE RACING Crank Bearing - KTM 24-1106
MOOSE RACING
$185.95A compromised crankshaft bearing doesn't just kill performance—it can leave you stranded mid-race or mid-ride. The MOOSE RACING Crank Bearing kit delivers precision tolerances and fluorocarbon-sealed design specifically engineered to minimize dry-start...09240227- SKU:
- 09240227
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- TYPE:
- BALL
$185.95 -
SHINDY Needle Bearing - 18 mm x 22 mm x 24 mm 10-201
SHINDY
$12.95Piston pin needle bearings are critical to maintaining precise crankshaft-to-connecting rod articulation, directly impacting engine reliability and performance consistency. Worn or damaged needle bearings introduce unwanted play that degrades power...NB1453- SKU:
- NB1453
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- OUTSIDE DIAMETER METRIC:
- 22 MM
- TYPE:
- NEEDLE
- OUTSIDE DIAMETER:
- 22 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- APPLICATION:
- PISTON
- LENGTH METRIC:
- 24 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER:
- 18 MM
- INSIDE DIAMETER METRIC:
- 18 MM
- LENGTH:
- 24 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$12.95 -
SHINDY Needle Bearing - 14 mm x 18 mm x 16 mm 10-054
SHINDY
$11.95Piston pin needle bearings are critical to engine reliability, especially in high-RPM applications where precision fit and smooth operation directly impact performance and longevity. The SHINDY 10-054 delivers the exact tolerances your engine demands—a...NB1461- SKU:
- NB1461
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- APPLICATION:
- PISTON
- LENGTH METRIC:
- 16 MM
- OUTSIDE DIAMETER:
- 18 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER METRIC:
- 14 MM
- UNITS:
- EACH
- INSIDE DIAMETER:
- 14 MM
- OUTSIDE DIAMETER METRIC:
- 18 MM
- TYPE:
- NEEDLE
- LENGTH:
- 16 MM
$11.95 -
SHINDY Needle Bearing -14 mm x 18 mm x 19 mm 10-051
SHINDY
$8.95Precision piston pin needle bearings are critical to engine reliability and performance, especially under high RPM conditions where lateral forces demand exact tolerances. SHINDY's 14mm x 18mm x 19mm bearing maintains consistent performance across...NB1450- SKU:
- NB1450
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- INSIDE DIAMETER METRIC:
- 14 MM
- APPLICATION:
- PISTON
- INSIDE DIAMETER:
- 14 MM
- LENGTH METRIC:
- 19 MM
- TYPE:
- NEEDLE
- LENGTH:
- 19 MM
- UNITS:
- EACH
- OUTSIDE DIAMETER:
- 18 MM
- OUTSIDE DIAMETER METRIC:
- 18 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
$8.95 -
SHINDY Needle Bearing - 16 mm x 20 mm x 19 mm 10-352
SHINDY
$9.95Piston pin needle bearings are critical to maintaining smooth reciprocal motion and preventing premature wear in high-RPM applications. This SHINDY precision bearing delivers the tight tolerances and consistent performance required for reliable engine...NB1456- SKU:
- NB1456
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- PISTON
- LENGTH:
- 19 MM
- PRODUCT NAME:
- BEARING
- OUTSIDE DIAMETER METRIC:
- 20 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- INSIDE DIAMETER:
- 16 MM
- INSIDE DIAMETER METRIC:
- 16 MM
- OUTSIDE DIAMETER:
- 20 MM
- LENGTH METRIC:
- 19 MM
- TYPE:
- NEEDLE
$9.95 -
SHINDY Needle Bearing - 18 mm x 22 mm x 22 mm 10-001
SHINDY
$9.95Piston pin needle bearings are critical to engine reliability, especially in high-RPM racing applications where precision tolerances and durability directly impact performance. This SHINDY bearing delivers the exact specifications needed for smooth,...NB1457- SKU:
- NB1457
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- LENGTH METRIC:
- 22 MM
- RIDING STYLE:
- UTV
- LENGTH:
- 22 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER:
- 18 MM
- INSIDE DIAMETER METRIC:
- 18 MM
- OUTSIDE DIAMETER:
- 22 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- APPLICATION:
- PISTON
- OUTSIDE DIAMETER METRIC:
- 22 MM
- TYPE:
- NEEDLE
$9.95 -
SHINDY Needle Bearing - 15 mm x 19 mm x 17 mm 10-053
SHINDY
$8.95Piston pin needle bearings are critical components that directly impact engine reliability and performance—especially under high RPM conditions where precision and durability are non-negotiable. The SHINDY 15mm x 19mm x 17mm bearing delivers the tight...NB1458- SKU:
- NB1458
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- INSIDE DIAMETER:
- 15 MM
- INSIDE DIAMETER METRIC:
- 15 MM
- LENGTH:
- 17 MM
- OUTSIDE DIAMETER METRIC:
- 19 MM
- UNITS:
- EACH
- LENGTH METRIC:
- 17 MM
- OUTSIDE DIAMETER:
- 19 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- PISTON
- TYPE:
- NEEDLE
$8.95 -
SHINDY Needle Bearing - 15 mm x 19 mm x 20 mm 10-152
SHINDY
$9.95Piston pin needle bearings are critical to engine reliability, especially in high-RPM or forced-induction applications where precision clearances are non-negotiable. The SHINDY 10-152 is manufactured to exacting tolerances, ensuring smooth articulation...NB1459- SKU:
- NB1459
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- LENGTH:
- 20 MM
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER:
- 19 MM
- PRODUCT NAME:
- BEARING
- INSIDE DIAMETER:
- 15 MM
- INSIDE DIAMETER METRIC:
- 15 MM
- OUTSIDE DIAMETER METRIC:
- 19 MM
- UNITS:
- EACH
- APPLICATION:
- PISTON
- LENGTH METRIC:
- 20 MM
- TYPE:
- NEEDLE
$9.95 -
SHINDY Needle Bearing - 15 mm x 20 mm x 18 mm 10-354
SHINDY
$14.95Piston pin needle bearings are critical to engine reliability and performance—they handle the precise lateral loads that occur thousands of times per minute during combustion cycles. The SHINDY 10-354 delivers the precision tolerances and durability...NB1460- SKU:
- NB1460
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- LENGTH:
- 18 MM
- OUTSIDE DIAMETER:
- 20 MM
- INSIDE DIAMETER:
- 15 MM
- INSIDE DIAMETER METRIC:
- 15 MM
- LENGTH METRIC:
- 18 MM
- OUTSIDE DIAMETER METRIC:
- 20 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- PISTON
- PRODUCT NAME:
- BEARING
- TYPE:
- NEEDLE
$14.95 -
SHINDY Needle Bearing - 14 mm x 18 mm x 17.5 mm 10-252
SHINDY
$8.95Piston pin needle bearings are critical to engine reliability—they manage radial loads and reduce friction at one of the most dynamic points in your engine's combustion cycle. A worn or damaged bearing increases piston slap, generates heat, and...NB1462- SKU:
- NB1462
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 18 MM
- TYPE:
- NEEDLE
- INSIDE DIAMETER:
- 14 MM
- INSIDE DIAMETER METRIC:
- 14 MM
- LENGTH:
- 17,5 MM
- LENGTH METRIC:
- 17.5 MM
- UNITS:
- EACH
- APPLICATION:
- PISTON
- OUTSIDE DIAMETER:
- 18 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
$8.95 -
SHINDY Needle Bearing - 14 mm x 18 mm x 16.5 mm 10-353
SHINDY
$7.95Piston pin needle bearings are critical to engine reliability, especially in high-RPM and forced-induction applications where precision tolerances directly impact performance and longevity. SHINDY's 14 mm x 18 mm x 16.5 mm needle bearing delivers the...NB1464- SKU:
- NB1464
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- INSIDE DIAMETER METRIC:
- 14 MM
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER:
- 18 MM
- PRODUCT NAME:
- BEARING
- LENGTH METRIC:
- 16.5 MM
- OUTSIDE DIAMETER METRIC:
- 18 MM
- TYPE:
- NEEDLE
- UNITS:
- EACH
- APPLICATION:
- PISTON
- INSIDE DIAMETER:
- 14 MM
- LENGTH:
- 16,5 MM
$7.95 -
SHINDY Piston Pin Bearing 10-351
SHINDY
$10.95Piston pin needle bearings are critical to engine reliability, directly affecting crankshaft longevity and combustion efficiency. The SHINDY 10-351 delivers precision manufacturing with minimal radial clearance, ensuring smooth pin articulation under...09240006- SKU:
- 09240006
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- PISTON
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 23 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- LENGTH:
- 22 MM
- OUTSIDE DIAMETER:
- 23 MM
- TYPE:
- NEEDLE
- UNITS:
- EACH
- INSIDE DIAMETER:
- 18 MM
- INSIDE DIAMETER METRIC:
- 18 MM
- LENGTH METRIC:
- 22 MM
$10.95 -
HOT RODS Crank Bearings K001
HOT RODS
$70.95A quality crankshaft assembly is only as reliable as its bearing and seal kit. The HOT RODS K001 Crank Bearings deliver precision-engineered main bearing and seal components designed to handle high RPM loads while maintaining critical oil film integrity...09240020- SKU:
- 09240020
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
$70.95 -
HOT RODS Crank Bearings K228
HOT RODS
$115.95A crankshaft is only as reliable as its bearing surfaces. The HOT RODS K228 Crank Bearings deliver precision-engineered main bearing and seal kits that ensure proper load distribution, reduce friction, and extend crankshaft longevity under high RPM and...09240052- SKU:
- 09240052
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$115.95Qty in Cart: 0Quantity:Price:$115.95Subtotal: -
HOT RODS Crank Bearings K229
HOT RODS
$88.95A crankshaft is only as reliable as its bearing assembly. The HOT RODS K229 crank bearing kit delivers precision-engineered main bearing and seal components that ensure proper load distribution, reduce friction, and maintain critical tolerances...09240053- SKU:
- 09240053
- Availability:
- Ships Same Business Day
- Weight:
- 1.39 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$88.95
