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
-
WSM Left Motor Mount - 4 TEC 011-130
WSM
$75.07Worn or damaged motor mounts compromise engine stability, increase vibration transfer to the chassis, and can accelerate wear on surrounding components. The WSM Left Motor Mount restores factory-spec...09330008- SKU:
- 09330008
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- PRODUCT NAME:
- MOUNT
- UNITS:
- EACH
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- ENGINE
$75.07 -
WSM Motor Mount - 4 TEC 011-131
WSM
$63.38Worn or damaged motor mounts compromise engine stability, increase vibration transfer to the chassis, and can lead to costly drivetrain misalignment over time. The WSM Motor Mount 4 TEC 011-131...09330009- SKU:
- 09330009
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- PRODUCT NAME:
- MOUNT
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- ENGINE
- UNITS:
- EACH
$63.38 -
WSM Oil Pump Cover - Sea-Doo 010-096
WSM
$30.99A failing or damaged oil pump cover compromises your Sea-Doo's lubrication system, risking catastrophic engine damage and costly repairs. This WSM direct replacement restores proper oil circulation...09320085- SKU:
- 09320085
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
- TYPE:
- OIL PUMP
$30.99Qty in Cart: 0Quantity:Price:$30.99Subtotal: -
WSM Long Shaft Pump - Sea-Doo 010-090
WSM
$47.54A failing oil pump compromises engine lubrication and accelerates wear on critical internal components—especially in high-performance Sea-Doo engines running extended hours or aggressive conditions...09320077- SKU:
- 09320077
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- TYPE:
- OIL PUMP
- UNITS:
- EACH
- PRODUCT NAME:
- SHAFT
- RIDING STYLE:
- WATERCRAFT
$47.54 -
WSM Short Shaft Pump - Sea-Doo 010-091
WSM
$45.48A failing or worn oil pump directly compromises engine lubrication and can lead to catastrophic bearing damage in Sea-Doo PWCs. The WSM Short Shaft Pump (010-091) is a direct OEM-equivalent...09320078- SKU:
- 09320078
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- UNITS:
- EACH
- TYPE:
- OIL PUMP
- PRODUCT NAME:
- SHAFT
- RIDING STYLE:
- WATERCRAFT
$45.48 -
WSM Short Shaft Pump - Sea-Doo 010-092
WSM
$45.48A failing oil pump compromises lubrication across your entire engine, risking catastrophic bearing wear and potential seizure during high-performance operation. The WSM Short Shaft Pump (010-092)...09320079- SKU:
- 09320079
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- SHAFT
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- OIL PUMP
$45.48 -
WSM Pump Rotor - 4-TEC - Sea-Doo 010-093
WSM
$28.92A failing oil pump rotor compromises lubrication delivery to critical engine components, risking catastrophic bearing wear and engine seizure. The WSM Pump Rotor is a direct OEM replacement...09320080- SKU:
- 09320080
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- TYPE:
- OIL PUMP
- UNITS:
- EACH
- PRODUCT NAME:
- ROTOR
- RIDING STYLE:
- WATERCRAFT
$28.92 -
WSM Cylinder Kit - Yamaha 010-6029K
WSM
$766.42The WSM Cylinder Kit 010-6029K delivers OEM-matched performance and reliability without compromise. Whether you're rebuilding after a race season or restoring your engine to factory specifications,...09310530- SKU:
- 09310530
- Availability:
- Ships Same Business Day
- Weight:
- 7.81 LBS
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER BORE COATING:
- NIKASIL
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
$766.42 -
WSM Power Valve with Safety Link 010-497-01
WSM
$113.84Exhaust scavenging efficiency directly impacts horsepower delivery and throttle response—the WSM Power Valve with Safety Link optimizes backpressure across your entire RPM range to unlock gains you...09262253- SKU:
- 09262253
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- POWER VALVE
- UNITS:
- EACH
- RIDING STYLE:
- WATERCRAFT
$113.84 -
WSM Crankshaft Assembly 010-1028WSM
WSM
$908.90A quality crankshaft assembly is the backbone of reliable engine performance, directly impacting power delivery, durability, and overall engine longevity. The WSM 010-1028WSM is precision-engineered...09210483- SKU:
- 09210483
- Availability:
- Ships Same Business Day
- Weight:
- 28.95 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MATERIAL:
- STEEL
- UNITS:
- KIT
- RIDING STYLE:
- WATERCRAFT
$908.90 -
WSM Crankshaft Assembly 010-1028-01WSM
WSM
$1,165.75A quality crankshaft is the backbone of engine reliability and performance—if yours is worn, damaged, or you're rebuilding from the ground up, this WSM assembly delivers the precision you need...09210484- SKU:
- 09210484
- Availability:
- Ships Same Business Day
- Weight:
- 42.80 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MATERIAL:
- STEEL
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
$1,165.75 -
WSM Crankshaft Assembly 010-1060WSM
WSM
$802.26A crankshaft assembly is the backbone of your engine's bottom end—it converts reciprocating piston motion into rotational power, making its precision and durability absolutely critical to engine...09210485- SKU:
- 09210485
- Availability:
- Ships Same Business Day
- Weight:
- 24.10 LBS
- PRODUCT NAME:
- CRANKSHAFT
- RIDING STYLE:
- WATERCRAFT
- MATERIAL:
- STEEL
- UNITS:
- EACH
$802.26 -
WSM Ring Set 010-909
WSM
$43.40Precision ring sealing is fundamental to engine performance and longevity—inadequate compression and oil control lead to power loss, increased blowby, and accelerated wear. The WSM Ring Set 010-909...09120260- SKU:
- 09120260
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- SET
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
$43.40 -
WSM Ring Set 010-909-07
WSM
$40.52Proper ring seal is foundational to engine performance—without it, compression loss, blow-by, and accelerated wear compromise power output and longevity. The WSM Ring Set 010-909-07 delivers...09120262- SKU:
- 09120262
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- BORE - OVERSIZE:
- +1,00 MM
- UNITS:
- SET
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- WATERCRAFT
$40.52 -
WSM Ring Set 010-924
WSM
$35.21Piston ring sets are critical to engine performance—they seal combustion pressure, regulate oil consumption, and maintain compression integrity across your engine's entire RPM range. The WSM Ring Set...09120263- SKU:
- 09120263
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- SET
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
$35.21 -
WSM Ring Set 010-960
WSM
$62.04Proper ring sealing is fundamental to engine efficiency and longevity. The WSM Ring Set 010-960 delivers reliable compression and blowby control, ensuring consistent power delivery and extended...09120266- SKU:
- 09120266
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- SET
- BORE - OVERSIZE:
- STANDARD
$62.04Qty in Cart: 0Quantity:Price:$62.04Subtotal: -
WSM Ring Set 010-960-05
WSM
$62.06Proper ring sealing is fundamental to engine efficiency and longevity—a worn or improper ring set directly impacts compression, oil consumption, and power output. The WSM Ring Set 010-960-05 delivers...09120267- SKU:
- 09120267
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- WATERCRAFT
- PRODUCT NAME:
- PISTON RING
- BORE - OVERSIZE:
- +0,50 MM
- UNITS:
- SET
$62.06Qty in Cart: 0Quantity:Price:$62.06Subtotal: -
WSM Ring Set 010-944
WSM
$41.33Piston ring sets are critical to engine sealing and compression integrity—they directly impact power output, oil consumption, and engine longevity. The WSM Ring Set 010-944 delivers OEM-quality...09110010- SKU:
- 09110010
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- SET
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
$41.33 -
WSM Ring Set 010-970
WSM
$32.42Piston ring sets are critical to engine performance—they maintain compression, control oil consumption, and ensure proper gas sealing across the entire RPM range. The WSM Ring Set 010-970 delivers...09110012- SKU:
- 09110012
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- SET
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
$32.42Qty in Cart: 0Quantity:Price:$32.42Subtotal: -
WSM Ring Set 010-972
WSM
$47.16Piston ring sets are critical to engine sealing and compression integrity—they directly impact power output, fuel efficiency, and engine longevity. The WSM Ring Set 010-972 delivers precise bore...09110014- SKU:
- 09110014
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- WATERCRAFT
- PRODUCT NAME:
- PISTON RING
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- UNITS:
- SET
$47.16
