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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On Sale
VESRAH Clutch Spring Set SK-226
VESRAH
MSRP: $12.33Now: $11.71Was: $12.33A worn or weak clutch spring set directly compromises your engagement feel, shifts, and overall drivetrain reliability—especially under racing conditions or aggressive driving. The VESRAH SK-226...SK226- SKU:
- SK226
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- CLUTCH
- PRODUCT NAME:
- SPRING SET
- RIDING STYLE:
- STREET
- UNITS:
- SET
- SPRING MATERIAL:
- STEEL
MSRP: $12.33Now: $11.71Was: $12.33 -
On Sale
VESRAH Clutch Spring Set SK-318
VESRAH
MSRP: $14.75Now: $14.01Was: $14.75Clutch spring performance directly impacts your bike's engagement consistency, throttle response, and overall rideability. The SK-318 delivers measurable improvements over factory springs, especially...SK318- SKU:
- SK318
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- SPRING MATERIAL:
- STEEL
- TYPE:
- CLUTCH
- UNITS:
- SET
- PRODUCT NAME:
- SPRING SET
MSRP: $14.75Now: $14.01Was: $14.75Qty in Cart: 0Quantity:Price:MSRP: $14.75Now: $14.01Was: $14.75Subtotal: -
MOOSE RACING Clutch Basket M192
MOOSE RACING
$212.95Stock clutch baskets generate excessive heat during disengagement and wear prematurely under racing conditions. The MOOSE RACING M192 upgrades your clutch assembly with precision engineering and...11320047- SKU:
- 11320047
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- MATERIAL:
- 6061 AIRCRAFT-GRADE ALUMINUM ALLOY
- PRODUCT NAME:
- CLUTCH BASKET
- COLOR/FINISH:
- ANODIZED
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$212.95 -
MOOSE RACING Steel Clutch Plates M80-7509-6
MOOSE RACING
$42.95Stock aluminum clutch plates fade under sustained load and wear prematurely—leaving you stranded mid-season or worse, mid-race. The MOOSE RACING Steel Clutch Plates M80-7509-6 eliminate that...11310765- SKU:
- 11310765
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- UNITS:
- SET
- TYPE:
- CLUTCH
- DRIVE PLATE MATERIAL:
- STEEL
- PRODUCT NAME:
- DRIVE PLATE SET (STEEL PLATE SET)
- RIDING STYLE:
- OFF-ROAD
$42.95 -
MOOSE RACING Steel Clutch Plates - KX80/85/100 M80-7313-5
MOOSE RACING
$38.95If you're running a KX80/85/100 and tired of replacing clutch plates every season, steel clutch plates deliver the durability and consistency aluminum simply can't match. The added weight provides...M807313- SKU:
- M807313
- Availability:
- Ships Same Business Day
- Weight:
- 1.19 LBS
- UNITS:
- SET
- PRODUCT NAME:
- DRIVE PLATE SET (STEEL PLATE SET)
- RIDING STYLE:
- OFF-ROAD
- DRIVE PLATE MATERIAL:
- STEEL
- TYPE:
- CLUTCH
$38.95Qty in Cart: 0Quantity:Price:$38.95Subtotal: -
MOOSE RACING Steel Clutch Plates M80-7404-7
MOOSE RACING
$61.95If you're running aluminum clutch plates, you're accepting a compromise between weight and longevity. MOOSE Racing's steel clutch plates eliminate that trade-off entirely—delivering superior...M807404- SKU:
- M807404
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- RIDING STYLE:
- UTV
- TYPE:
- CLUTCH
- PRODUCT NAME:
- DRIVE PLATE SET (STEEL PLATE SET)
- RIDING STYLE:
- ATV
- DRIVE PLATE MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
$61.95 -
PARTS UNLIMITED Countershaft Sprocket - 14-Tooth 517-17461-41
PARTS UNLIMITED
$7.37A worn or damaged countershaft sprocket directly impacts your bike's acceleration response and overall drivetrain efficiency. This OEM-spec replacement restores precise power delivery to the rear...K222659- SKU:
- K222659
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TOOTH COUNT:
- 14
- COLOR/FINISH:
- RAW
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$7.37 -
PARTS UNLIMITED Countershaft Sprocket - 15-Tooth 174-17461-50
PARTS UNLIMITED
$7.37A worn or damaged countershaft sprocket compromises power delivery and accelerates wear on your entire drivetrain. This PARTS UNLIMITED 15-tooth sprocket restores precise engagement with your chain,...K222612- SKU:
- K222612
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 15
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
$7.37 -
PARTS UNLIMITED Countershaft Sprocket - 16-Tooth 174-17461-60
PARTS UNLIMITED
$7.37A worn or damaged countershaft sprocket compromises your entire drivetrain's efficiency and can lead to chain slippage or premature wear on mating components. The PARTS UNLIMITED 16-tooth...K222613- SKU:
- K222613
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 16
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
$7.37Qty in Cart: 0Quantity:Price:$7.37Subtotal: -
PARTS UNLIMITED Countershaft Sprocket - 13-Tooth 214-17461-30
PARTS UNLIMITED
$12.67A worn or damaged countershaft sprocket directly impacts your power delivery and chain engagement—replacing it with a precision-manufactured OEM-spec part restores reliable acceleration and extends...K222624- SKU:
- K222624
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 13
- UNITS:
- EACH
$12.67 -
PARTS UNLIMITED Countershaft Sprocket - 14-Tooth 214-17461-40
PARTS UNLIMITED
$12.67A worn or damaged countershaft sprocket directly impacts your transmission's ability to deliver consistent power to the chain and rear wheel. This 14-tooth replacement restores precise engagement and...K222625- SKU:
- K222625
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- TOOTH COUNT:
- 14
- COLOR/FINISH:
- RAW
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$12.67 -
PARTS UNLIMITED Countershaft Sprocket - 15-Tooth 5Y1-17461-50
PARTS UNLIMITED
$14.79A worn or damaged countershaft sprocket compromises your entire drivetrain's efficiency and can lead to costly secondary damage. This OEM-spec replacement restores precise engagement with your chain,...K222668- SKU:
- K222668
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- RAW
- TOOTH COUNT:
- 15
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
$14.79 -
PARTS UNLIMITED Countershaft Sprocket - 12-Tooth 174-17461-20
PARTS UNLIMITED
$8.43A worn or damaged countershaft sprocket compromises your entire drivetrain's efficiency and can lead to costly chain slippage and premature wear on downstream components. The PARTS UNLIMITED 12-Tooth...K222676- SKU:
- K222676
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- CHAIN SIZE:
- 428
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 12
- COLOR/FINISH:
- RAW
$8.43 -
PARTS UNLIMITED Countershaft Sprocket - 15-Tooth 5HO-17461-50
PARTS UNLIMITED
$7.37A worn or damaged countershaft sprocket compromises power delivery and can lead to chain slippage or accelerated wear on your entire drivetrain. This PARTS UNLIMITED replacement restores the precise...K222678- SKU:
- K222678
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- CHAIN SIZE:
- 428
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 15
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
$7.37 -
MOOSE RACING Kickstarter 80-0561-00-60
MOOSE RACING
$184.79The MOOSE RACING Kickstarter is engineered for reliability in the harshest racing and off-road conditions. Built from aircraft-grade aluminum and hard anodized for UV resistance, this mounting...11120051- SKU:
- 11120051
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK ANODIZED
- PRODUCT NAME:
- KICKSTARTER
- UNITS:
- EACH
- MATERIAL:
- 6061 ALUMINUM
$184.79 -
PARTS UNLIMITED Rear Yamaha Sprocket - 420 - 32 Tooth 21W-25432-10
PARTS UNLIMITED
$16.91A worn or damaged rear sprocket directly impacts your power delivery, throttle response, and chain wear patterns. The PARTS UNLIMITED 420 32-tooth rear sprocket restores OEM-specification performance...K223603K- SKU:
- K223603K
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- TOOTH COUNT:
- 32
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$16.91Qty in Cart: 0Quantity:Price:$16.91Subtotal: -
PARTS UNLIMITED Single Bearing - 20 x 42 x 12 6004-2RS
PARTS UNLIMITED
$5.46Precision bearings are the foundation of reliable high-performance machinery—any slop or degradation in your rotating assemblies directly impacts efficiency, noise levels, and component lifespan. The...60042RS- SKU:
- 60042RS
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- INSIDE DIAMETER:
- 20 MM
- RIDING STYLE:
- STREET
- THICKNESS:
- 12 MM
- OUTSIDE DIAMETER:
- 42 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- SNOW
- STYLE:
- SMOOTH
- RIDING STYLE:
- ATV
- TYPE:
- DOUBLE SEAL
- UNITS:
- EACH
$5.46Qty in Cart: 0Quantity:Price:$5.46Subtotal: -
MOOSE RACING 520 HPO - O-Ring Clip Connecting Link - Master Link M573-00-01
MOOSE RACING
$6.95A worn or damaged chain connecting link compromises power delivery and creates safety hazards at speed. The MOOSE RACING 520 HPO O-Ring Master Link restores full chain integrity with precision...M5730001- SKU:
- M5730001
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- COLOR/FINISH:
- NATURAL
- MODEL:
- HPO SERIES
- CHAIN TYPE:
- 520 HPO
- NUMBER OF LINKS:
- 1
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MASTER LINK CONNECTOR:
- CLIP
- PRODUCT NAME:
- CONNECTING LINK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$6.95 -
MOOSE RACING 520 HPO - O-Ring Chain - 110 PLT M573-00-110
MOOSE RACING
$102.95A chain is only as strong as its weakest link—and this Moose Racing 520 HPO delivers the tensile strength and durability demanded by mid-range performance engines. Built with vacuum-injected grease...M57300110- SKU:
- M57300110
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- MASTER LINK CONNECTOR:
- CLIP
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 450 CC
- NUMBER OF LINKS:
- 110
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- CHAIN SIZE:
- 520
- CHAIN TYPE:
- 520 HPO
- PRODUCT NAME:
- DRIVE CHAIN
- SEAL TYPE:
- O-RING
- TENSILE STRENGTH METRIC:
- 33.3 KN
- MODEL:
- HPO SERIES
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NATURAL
- RIDING STYLE:
- ATV
- TENSILE STRENGTH IMPERIAL:
- 7496 LB
- UNITS:
- EACH
$102.95Qty in Cart: 0Quantity:Price:$102.95Subtotal: -
MOOSE RACING 520 HPO - O-Ring Chain - 114 PLT M573-00-114
MOOSE RACING
$106.95A quality chain is the backbone of reliable power delivery—poor chain maintenance leads to premature wear, power loss, and potential catastrophic failure. The MOOSE RACING 520 HPO O-Ring Chain...M57300114- SKU:
- M57300114
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- CHAIN TYPE:
- 520 HPO
- PRODUCT NAME:
- DRIVE CHAIN
- SEAL TYPE:
- O-RING
- MASTER LINK CONNECTOR:
- CLIP
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- NATURAL
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 450 CC
- NUMBER OF LINKS:
- 114
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- TENSILE STRENGTH IMPERIAL:
- 7496 LB
- CHAIN SIZE:
- 520
- MODEL:
- HPO SERIES
- TENSILE STRENGTH METRIC:
- 33.3 KN
$106.95
