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
-
PROX Inner Clutch Hub 18.4392
PROX
$77.95A worn or damaged clutch hub directly compromises your primary clutch's engagement and response characteristics, robbing you of consistent power delivery on the track or trail. The PROX Inner Clutch...11320070- SKU:
- 11320070
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CLUTCH HUB
- TYPE:
- INNER
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$77.95 -
PROX Inner Clutch Hub 18.4334
PROX
$71.95The PROX Inner Clutch Hub 18.4334 is your direct replacement for worn or damaged OEM clutch components, restoring precise engagement characteristics and reliable power transfer. Manufactured to OEM...11320071- SKU:
- 11320071
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- PRODUCT NAME:
- CLUTCH HUB
- TYPE:
- INNER
- RIDING STYLE:
- OFF-ROAD
$71.95 -
PROX Inner Clutch Hub 18.4408
PROX
$95.95The PROX Inner Clutch Hub 18.4408 is a precision-cast aluminum replacement hub engineered to OEM specifications, ensuring reliability and consistent engagement across both stock and high-performance...11320072- SKU:
- 11320072
- Availability:
- Ships Same Business Day
- Weight:
- 1.24 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- INNER
- PRODUCT NAME:
- CLUTCH HUB
- UNITS:
- EACH
$95.95Qty in Cart: 0Quantity:Price:$95.95Subtotal: -
PROX Inner Clutch Hub 18.3299
PROX
$71.95The PROX Inner Clutch Hub 18.3299 is engineered as a direct OEM replacement, ensuring your primary clutch operates at factory specifications without compromise. Whether you're running stock or...11320073- SKU:
- 11320073
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- CLUTCH HUB
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- INNER
$71.95 -
PROX Inner Clutch Hub - RM-Z250 18.3337
PROX
$77.95The clutch hub is the mechanical heart of your primary clutch system, and wear or damage here directly compromises engagement precision and power delivery. A failing hub forces sloppy shifts,...11320516- SKU:
- 11320516
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- PRODUCT NAME:
- CLUTCH HUB
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- INNER
$77.95 -
PROX Inner Clutch Hub - CRF250R 18.1340
PROX
$93.95The clutch hub is the critical interface between your primary drive system and engine power delivery. A worn or damaged hub creates slippage, inconsistent engagement, and compromised...11320654- SKU:
- 11320654
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- CLUTCH HUB
- TYPE:
- INNER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$93.95 -
PROX Inner Clutch Hub - CRF450R 18.1409
PROX
$79.95The PROX Inner Clutch Hub is engineered to restore full clutch engagement and reliability in your CRF450R. Whether you're dealing with wear from track use or rebuilding your clutch system, this...11320655- SKU:
- 11320655
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- CLUTCH HUB
- TYPE:
- INNER
$79.95Qty in Cart: 0Quantity:Price:$79.95Subtotal: -
On Sale
PROX Inner Clutch Hub 18.1290
PROX
MSRP: $66.95Now: $55.00Was: $66.95The PROX Inner Clutch Hub 18.1290 is a precision-engineered replacement component manufactured to exact OEM specifications, ensuring reliable power transfer and consistent clutch engagement. Whether...11320059- SKU:
- 11320059
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CLUTCH HUB
- TYPE:
- INNER
- UNITS:
- EACH
MSRP: $66.95Now: $55.00Was: $66.95 -
On Sale
PROX Inner Clutch Hub 18.1397
PROX
MSRP: $82.95Now: $68.00Was: $82.95A worn or damaged clutch hub can compromise your primary clutch engagement and throttle response—critical factors whether you're on the track or the trail. The PROX Inner Clutch Hub 18.1397 delivers...11320061- SKU:
- 11320061
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- TYPE:
- INNER
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CLUTCH HUB
MSRP: $82.95Now: $68.00Was: $82.95 -
On Sale
SUPERSPROX Steel Rear Sprocket - 53-Tooth RFE-210-53-BLK
SUPERSPROX
MSRP: $49.95Now: $42.46Was: $49.95A high-performance rear sprocket needs to deliver durability under sustained load while maintaining precise engagement with your chain. The SUPERSPROX 53-Tooth Steel Rear Sprocket combines...12101890- SKU:
- 12101890
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 53
- TYPE:
- REAR
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
MSRP: $49.95Now: $42.46Was: $49.95 -
On Sale
SUPERSPROX Steel Rear Sprocket - 42-Tooth RFE-460-42-BLK
SUPERSPROX
MSRP: $49.95Now: $42.46Was: $49.95If you're running a chain drive system that demands reliability under sustained load, sprocket wear is your silent performance killer. The SUPERSPROX 42-tooth rear sprocket delivers race-proven...12101901- SKU:
- 12101901
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 42
- TYPE:
- REAR
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
MSRP: $49.95Now: $42.46Was: $49.95Qty in Cart: 0Quantity:Price:MSRP: $49.95Now: $42.46Was: $49.95Subtotal: -
On Sale
SUPERSPROX Steel Rear Sprocket - 48-Tooth RFE-460-48-BLK
SUPERSPROX
MSRP: $49.95Now: $42.46Was: $49.95A rear sprocket is one of the most critical drivetrain components for acceleration, top speed, and overall power delivery—and choosing the right one directly impacts your bike's performance and...12101902- SKU:
- 12101902
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
MSRP: $49.95Now: $42.46Was: $49.95Qty in Cart: 0Quantity:Price:MSRP: $49.95Now: $42.46Was: $49.95Subtotal: -
On Sale
SUPERSPROX Steel Rear Sprocket - 48-Tooth RFE-1512-48-BLK
SUPERSPROX
MSRP: $54.95Now: $46.71Was: $54.95A worn or inefficient rear sprocket directly impacts your drivetrain's responsiveness and longevity. The SUPERSPROX 48-tooth steel sprocket delivers race-proven durability with a precision-engineered...12102157- SKU:
- 12102157
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- REAR
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
MSRP: $54.95Now: $46.71Was: $54.95Qty in Cart: 0Quantity:Price:MSRP: $54.95Now: $46.71Was: $54.95Subtotal: -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Red RACD130642RED
SUPERSPROX
MSRP: $10.95Now: $9.31Was: $10.95Traditional stamped steel sprockets flex under load, robbing you of precise power delivery and longevity. The SUPERSPROX Edge Rear Sprocket Insert delivers the rigidity and durability of a premium...12102336- SKU:
- 12102336
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- RED
- TYPE:
- EDGE REAR
- UNITS:
- EACH
- PRODUCT NAME:
- INSERT
- RIDING STYLE:
- STREET
MSRP: $10.95Now: $9.31Was: $10.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Gold RACD130746GLD
SUPERSPROX
MSRP: $9.95Now: $8.46Was: $9.95A worn or damaged rear sprocket insert compromises your bike's acceleration, chain engagement, and overall drivetrain efficiency. The SUPERSPROX Edge Rear Sprocket Insert delivers...12102338- SKU:
- 12102338
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $9.95Now: $8.46Was: $9.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Blue RACD179242BLU
SUPERSPROX
MSRP: $9.95Now: $8.46Was: $9.95A quality rear sprocket directly impacts acceleration, top speed, and overall drivetrain efficiency—making sprocket selection critical for racers and performance enthusiasts. Traditional stamped...12102339- SKU:
- 12102339
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLUE
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
MSRP: $9.95Now: $8.46Was: $9.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Gold RACD179242GLD
SUPERSPROX
MSRP: $9.95Now: $8.46Was: $9.95Traditional stamped steel sprockets introduce inconsistencies in tooth profile and durability that compromise acceleration and chain longevity—especially under sustained racing conditions. The...12102340- SKU:
- 12102340
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
MSRP: $9.95Now: $8.46Was: $9.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Blue RACD179243BLU
SUPERSPROX
MSRP: $9.95Now: $8.46Was: $9.95A worn or damaged rear sprocket compromises your chain drive efficiency and can introduce unwanted vibration throughout your drivetrain. The SUPERSPROX Edge Rear Sprocket Insert replaces traditional...12102341- SKU:
- 12102341
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- BLUE
- UNITS:
- EACH
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
- RIDING STYLE:
- STREET
MSRP: $9.95Now: $8.46Was: $9.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Gold RACD179243GLD
SUPERSPROX
MSRP: $9.95Now: $8.46Was: $9.95Stamped steel sprockets introduce inconsistencies in tooth engagement and accelerate wear under high-load racing conditions. The SUPERSPROX Edge Rear Sprocket Insert upgrades your drivetrain with...12102342- SKU:
- 12102342
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $9.95Now: $8.46Was: $9.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Blue RACD179245BLU
SUPERSPROX
MSRP: $9.95Now: $8.46Was: $9.95Traditional stamped steel sprockets flex under load, compromising chain engagement and acceleration response. SUPERSPROX Edge rear sprocket inserts replace worn or damaged inserts with...12102343- SKU:
- 12102343
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
MSRP: $9.95Now: $8.46Was: $9.95
