Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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HOT RODS Water Pump Repair Kit Honda WPK0012
HOT RODS
$39.95A leaking water pump compromises cooling system integrity and risks catastrophic engine damage—this repair kit restores your Honda's thermal management without replacing the entire assembly. Whether you're addressing a weeping gasket or a worn bearing,...09342924- SKU:
- 09342924
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$39.95 -
HOT RODS Water Pump Repair Kit - Honda WPK0013
HOT RODS
$38.95A leaking or failing water pump can quickly compromise engine temperatures and lead to costly damage. This HOT RODS repair kit gives you precision OEM-quality bearings and seals to restore your pump to factory specifications without replacing the entire...09342925- SKU:
- 09342925
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$38.95Qty in Cart: 0Quantity:Price:$38.95Subtotal: -
HOT RODS Water Pump Repair Kit - Yamaha WPK0016
HOT RODS
$34.95A leaking or failing water pump doesn't just waste coolant—it compromises engine temperature control and can lead to catastrophic overheating. This HOT RODS repair kit delivers OEM-quality replacement components that restore your pump to factory...09342928- SKU:
- 09342928
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$34.95 -
HOT RODS Water Pump Repair Kit - Yamaha WPK0020
HOT RODS
$34.95A leaking water pump compromises engine cooling efficiency and risks catastrophic overheating—this repair kit restores OEM-spec performance without replacing the entire assembly. Whether you're addressing a weeping seal or a failed bearing, the HOT RODS...09342931- SKU:
- 09342931
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$34.95 -
HOT RODS Water Pump Repair Kit - Yamaha WPK0021
HOT RODS
$30.95A leaking water pump compromises cooling system integrity and risks catastrophic engine failure—this repair kit restores OEM performance without full pump replacement. HOT RODS' precision-engineered components address the root causes of pump degradation:...09342932- SKU:
- 09342932
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$30.95Qty in Cart: 0Quantity:Price:$30.95Subtotal: -
HOT RODS Connecting Rod 8646
HOT RODS
$185.95When you're pushing your engine to the limit, a weak connecting rod becomes your biggest liability. The HOT RODS 8646 is engineered for the demands of high-RPM racing and heavy-duty applications, delivering the strength and reliability you need to keep...09230198- SKU:
- 09230198
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD KIT
- STYLE:
- HEAVY DUTY
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$185.95 -
HOT RODS Connecting Rod 8656
HOT RODS
$245.95Whether you're building a high-rpm engine or replacing worn OE rods, the HOT RODS 8656 connecting rod delivers the strength and precision required for sustained performance. The combination of certified 8620 AISI steel, case-hardened crankpins, and...09230199- SKU:
- 09230199
- Availability:
- Ships Same Business Day
- Weight:
- 1.77 LBS
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD KIT
- STYLE:
- HEAVY DUTY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$245.95 -
HOT RODS Connecting Rod 8647
HOT RODS
$232.95When you're pushing your engine to high RPM limits, your connecting rods are under extreme stress—and OEM components often can't handle sustained performance demands. The HOT RODS 8647 is built specifically for engines that need reliability at the edge,...09230200- SKU:
- 09230200
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- 8620 STEEL
- STYLE:
- HEAVY DUTY
$232.95 -
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 -
HOT RODS Crank Bearings K231
HOT RODS
$88.95A 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
$88.95 -
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
$111.95A 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
$111.95 -
HOT RODS Crank Bearings K235
HOT RODS
$78.95A 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
$78.95 -
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
$119.95A 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
$119.95 -
HOT RODS Crank Bearings K050
HOT RODS
$105.95A 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
$105.95 -
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:
