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 - KTM WPK0058
HOT RODS
$63.95A leaking water pump compromises cooling efficiency and can lead to catastrophic engine failure—especially on high-demand KTM machines. This repair kit gives you OEM-quality components to restore...09343140- SKU:
- 09343140
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$63.95 -
HOT RODS Water Pump Repair Kit - KTM WPK0046
HOT RODS
$46.95A leaking water pump compromises engine cooling efficiency and risks catastrophic overheating during high-demand riding. This HOT RODS repair kit delivers OEM-equivalent components to restore full...09343047- SKU:
- 09343047
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$46.95Qty in Cart: 0Quantity:Price:$46.95Subtotal: -
HOT RODS Water Pump Repair Kit - Honda WPK0011
HOT RODS
$41.95A leaking water pump doesn't just waste coolant—it signals bearing wear that will only accelerate if ignored. This repair kit gives you OEM-quality components to restore your pump's integrity without...09342923- SKU:
- 09342923
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$41.95 -
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...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...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...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...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...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,...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...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...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...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
$70.95Qty in Cart: 0Quantity:Price:$70.95Subtotal: -
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...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,...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
$88.95Qty in Cart: 0Quantity:Price:$88.95Subtotal: -
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...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
$88.95Qty in Cart: 0Quantity:Price:$88.95Subtotal: -
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...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,...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...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
$111.95Qty in Cart: 0Quantity:Price:$111.95Subtotal: -
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...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...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:
