Dirt Bike Drivetrain
Dirt Bike Drivetrain Parts at JJ Motorsports
Enhance your dirt bike’s power transfer with premium drivetrain parts from JJ Motorsports. Find heavy-duty chains, front and rear sprockets, and clutch components designed to withstand intense riding demands. Combine these with other motocross gear and parts to maximize acceleration and ride efficiency on the track or trail.
Shop trusted brands like JT Chains for sealed chains and Renthal for ultralight sprockets. Explore related categories such as Dirt Bike Engine Parts for power upgrades or Dirt Bike Exhaust for complete tuning.
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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PARTS UNLIMITED Countershaft Sprocket - 15-Tooth 27511-14320
PARTS UNLIMITED
$15.85A worn or damaged countershaft sprocket compromises your entire drivetrain's efficiency, leading to power loss, chain wear, and potential catastrophic failure. This PARTS UNLIMITED 15-tooth countershaft sprocket is manufactured to OEM specifications...K222868- SKU:
- K222868
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 15
$15.85Qty in Cart: 0Quantity:Price:$15.85Subtotal: -
MOOSE RACING Chain Roller - 34 mm x 24 mm - Black 79-5009
MOOSE RACING
$11.95Chain roller friction is a silent performance killer—it robs horsepower and accelerates wear on your entire drivetrain. The MOOSE RACING Chain Roller cuts that parasitic drag while extending the service life of your chain and sprockets. Whether you're...12310037- SKU:
- 12310037
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- OUTSIDE DIAMETER METRIC:
- 34 MM
- INSIDE DIAMETER METRIC:
- 14 MM
- MOUNTING POSITION:
- UPPER
- PRODUCT NAME:
- CHAIN ROLLER
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BLACK
- MATERIAL:
- DELRIN® PLASTIC
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MOUNTING POSITION:
- LOWER
- TYPE:
- SEALED
- WIDTH METRIC:
- 24 MM
$11.95 -
VESRAH Clutch Spring Set SK-254
VESRAH
$14.83A worn or weak clutch spring set compromises your ability to modulate power delivery and maintain consistent engagement across the rev range. The VESRAH SK-254 restores—or exceeds—OEM performance with heavy-duty steel construction that handles repeated...SK254- SKU:
- SK254
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- SPRING MATERIAL:
- STEEL
- PRODUCT NAME:
- SPRING SET
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- UNITS:
- SET
- RIDING STYLE:
- UTV
$14.83Qty in Cart: 0Quantity:Price:$14.83Subtotal: -
VESRAH Clutch Discs VC-355
VESRAH
$41.33Worn or glazed clutch plates rob your bike of crisp engagement and power delivery. VESRAH Clutch Discs VC-355 restore OEM-level friction characteristics and shift feel, giving you reliable modulation whether you're cruising or attacking corners. Built to...VC355- SKU:
- VC355
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- UNITS:
- SET OF 6
- FRICTION PLATE MATERIAL:
- CORK
- PRODUCT NAME:
- FRICTION PLATE SET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
$41.33 -
VESRAH Clutch Discs VC-420
VESRAH
$51.00Clutch disc degradation directly impacts power delivery, throttle response, and overall drivability—especially under aggressive riding or racing conditions. Vesrah VC-420 friction plates are engineered to OEM or higher specifications, delivering...VC420- SKU:
- VC420
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- FRICTION PLATE MATERIAL:
- CORK
- PRODUCT NAME:
- FRICTION PLATE SET
- TYPE:
- CLUTCH
- UNITS:
- SET OF 5
$51.00 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 41 Tooth 64511-14E00
PARTS UNLIMITED
$30.69A worn or damaged sprocket directly impacts your chain engagement, throttle response, and overall drivetrain efficiency. The PARTS UNLIMITED Rear Suzuki Sprocket restores OEM-precise performance with hardened steel construction designed to outlast...K223928- SKU:
- K223928
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 41
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$30.69 -
PARTS UNLIMITED Countershaft Sprocket - 12-Tooth 23803-444-810
PARTS UNLIMITED
$12.67Your countershaft sprocket is the critical link between your transmission and primary drive—wear or damage here cascades into poor shift quality and reduced drivetrain efficiency. This PARTS UNLIMITED 12-tooth sprocket is manufactured to OEM...K222501M- SKU:
- K222501M
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 12
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
$12.67 -
PARTS UNLIMITED Countershaft Sprocket - 14-Tooth 23801KK1-000-14
PARTS UNLIMITED
$15.85A worn or damaged countershaft sprocket directly compromises power delivery and throttle response, forcing your transmission to work harder and reducing overall drivetrain efficiency. The PARTS UNLIMITED 14-tooth countershaft sprocket restores OEM-spec...K222501N- SKU:
- K222501N
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERSHAFT
- COLOR/FINISH:
- RAW
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 14
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$15.85Qty in Cart: 0Quantity:Price:$15.85Subtotal: -
PARTS UNLIMITED Countershaft Sprocket - 12-Tooth 23802-HA2-000
PARTS UNLIMITED
$14.79A worn or damaged countershaft sprocket compromises throttle response and power delivery across your entire drivetrain. This OEM-spec replacement restores precise engagement and chain synchronization, ensuring reliable acceleration and consistent...K222501S- SKU:
- K222501S
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RAW
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- TOOTH COUNT:
- 12
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
$14.79Qty in Cart: 0Quantity:Price:$14.79Subtotal: -
PARTS UNLIMITED Countershaft Sprocket - 13-Tooth 23800041-000-13
PARTS UNLIMITED
$7.37A worn or damaged countershaft sprocket directly impacts chain tension, power delivery, and overall drivetrain efficiency. This 13-tooth OEM-specification replacement restores precise engagement with your chain and maintains the exact gear ratios your...K222502- SKU:
- K222502
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- CHAIN SIZE:
- 420
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 13
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
$7.37Qty in Cart: 0Quantity:Price:$7.37Subtotal: -
PARTS UNLIMITED Countershaft Sprocket - 13-Tooth 23801-HA5-000
PARTS UNLIMITED
$15.85A worn or damaged countershaft sprocket directly impacts your power delivery, throttle response, and overall drivetrain efficiency. This OEM-spec replacement ensures you're running the exact same precision-engineered geometry as your bike's original...K222502M- SKU:
- K222502M
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
$15.85 -
PARTS UNLIMITED Rear Kawasaki Sprocket - 428 - 49 Tooth 64511-24201
PARTS UNLIMITED
$26.47A worn or damaged rear sprocket directly impacts your bike's acceleration, top-end performance, and chain longevity. This OEM-spec Kawasaki sprocket restores precise engagement and eliminates the drivetrain slack that develops over time. Whether you're...K223801C- SKU:
- K223801C
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$26.47Qty in Cart: 0Quantity:Price:$26.47Subtotal: -
PARTS UNLIMITED Countershaft Sprocket - 15-Tooth 93823-14149-15T
PARTS UNLIMITED
$12.67A worn or damaged countershaft sprocket compromises your entire drivetrain's efficiency and can lead to costly chain wear or premature failure. This OEM-spec replacement restores precise engagement between your chain and sprocket, ensuring reliable power...12120366- SKU:
- 12120366
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 15
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
$12.67Qty in Cart: 0Quantity:Price:$12.67Subtotal: -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 40 Tooth 41201-KG0-000
PARTS UNLIMITED
$33.87A worn or damaged rear sprocket compromises chain engagement and throttle response, creating safety risks and accelerating wear on your entire drivetrain. This OEM-spec replacement restores precise tooth geometry and optimal chain tension, essential for...K223503A- SKU:
- K223503A
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 40
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$33.87 -
PARTS UNLIMITED Countershaft Sprocket - 12-Tooth 27511-19A00
PARTS UNLIMITED
$13.73A worn or damaged countershaft sprocket compromises your transmission's efficiency and can lead to costly drivetrain damage. This OEM-spec replacement ensures precise engagement with your chain, restoring optimal power delivery and extending the life of...K222865- SKU:
- K222865
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 12
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
$13.73Qty in Cart: 0Quantity:Price:$13.73Subtotal: -
PARTS UNLIMITED Single Bearing - 1" Radiused SA205-16
PARTS UNLIMITED
$16.98Reliable bearing performance is the foundation of any well-maintained powersport or automotive application. The PARTS UNLIMITED SA205-16 delivers precision support with triple-seal protection and specialized low-temperature grease, ensuring consistent...RA100NPPB- SKU:
- RA100NPPB
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- STYLE:
- RADIUSED
- TYPE:
- DOUBLE SEAL
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- THICKNESS:
- 31,75 MM (1-1/4')
- INSIDE DIAMETER:
- 25,4 MM (1')
- OUTSIDE DIAMETER:
- 52 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
$16.98 -
MOOSE RACING Repair Kit - Master Cylinder - Brake/Clutch 18-1055
MOOSE RACING
$45.95A leaking master cylinder compromises both safety and performance, leaving you stranded or worse. This MOOSE RACING repair kit gives you everything needed to restore your brake or clutch master cylinder to factory specifications without the expense of...11320931- SKU:
- 11320931
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- REBUILD KIT
- STYLE:
- STANDARD
- TYPE:
- CLUTCH
- TYPE:
- MASTER CYLINDER
$45.95 -
MOOSE RACING Clutch Kit M90-1871
MOOSE RACING
$203.95A complete clutch kit engineered to deliver consistent engagement and superior holding power across a wide range of operating conditions. Whether you're pushing hard on the track or putting down serious power in street applications, this kit eliminates...11312394- SKU:
- 11312394
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- FEATURES:
- INCLUDES GASKET
- PRODUCT NAME:
- CLUTCH KIT
- DRIVE PLATE MATERIAL:
- STEEL
- FEATURES:
- INCLUDES SPRINGS
- RIDING STYLE:
- OFF-ROAD
- SPRING MATERIAL:
- CHROME SILICON
- TYPE:
- COMPLETE
- UNITS:
- KIT
$203.95 -
MOOSE RACING 520 FB - Chain - 110 Links 195FB110
MOOSE RACING
$135.95If you're running a 450cc or larger machine, chain failure isn't just an inconvenience—it's a race-ending catastrophe. The Moose Racing 520 FB delivers the tensile strength and precision engineering to keep you connected to the track, lap after lap,...12220100- SKU:
- 12220100
- Availability:
- Ships Same Business Day
- Weight:
- 4.28 LBS
- COLOR/FINISH:
- GOLD
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TENSILE STRENGTH IMPERIAL:
- 7937 LB
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- CHAIN TYPE:
- 520 FB
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- TENSILE STRENGTH METRIC:
- 35.3 KN
- MASTER LINK CONNECTOR:
- RIVET
- MODEL:
- FB SERIES
- NUMBER OF LINKS:
- 110
- SEAL TYPE:
- FB-RING
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 750 CC
- PRODUCT NAME:
- DRIVE CHAIN
- RIDING STYLE:
- ATV
$135.95 -
MOOSE RACING Clutch Basket M441
MOOSE RACING
$313.95A worn or damaged clutch basket compromises your bike's power delivery and can leave you stranded mid-race or ride. The MOOSE RACING Clutch Basket M441 restores precise clutch engagement and reliability with OEM-quality construction designed for...11321373- SKU:
- 11321373
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- CLUTCH BASKET
- MATERIAL:
- BILLET ALUMINUM
$313.95Qty in Cart: 0Quantity:Price:$313.95Subtotal:
