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
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On Sale
PROX Steel Plate Set - Gas Gas/Husqvarna/KTM 16.S53010
PROX
MSRP: $45.95Now: $34.00Was: $45.95Worn or glazed clutch plates rob you of engagement precision and consistent power delivery—especially critical in high-performance riding where clutch modulation separates clean shifts from sloppy ones. This PROX Steel Plate Set restores OEM-spec...11313935- SKU:
- 11313935
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $45.95Now: $34.00Was: $45.95 -
On Sale
PROX Steel Plate Set - 125 SE-R 16.S71018
PROX
MSRP: $69.95Now: $56.00Was: $69.95A worn or damaged clutch plate set directly impacts your 125 SE-R's engagement precision and overall reliability. This OEM-spec steel plate set restores factory performance characteristics, ensuring consistent power transfer without slippage or chatter...11313936- SKU:
- 11313936
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $69.95Now: $56.00Was: $69.95 -
On Sale
PROX Steel Plate Set - Sherco 16.S73018
PROX
MSRP: $78.95Now: $64.00Was: $78.95Clutch plate wear is inevitable, but downtime isn't. The PROX Steel Plate Set for Sherco 16.S73018 delivers OEM-specification performance when you need a complete replacement or are rebuilding your clutch system. These hardened steel plates maintain...11313937- SKU:
- 11313937
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
MSRP: $78.95Now: $64.00Was: $78.95 -
On Sale
PROX Inner Clutch Hub - CRF250R/RX 18.1348
PROX
MSRP: $93.95Now: $76.00Was: $93.95The inner clutch hub is a critical wear component that directly impacts your CRF250R/RX's power delivery and throttle response. A worn or damaged hub causes slippage, delayed engagement, and inconsistent performance—issues that compound quickly in...11321867- SKU:
- 11321867
- Availability:
- Ships Same Business Day
- Weight:
- 0.67 LBS
MSRP: $93.95Now: $76.00Was: $93.95 -
On Sale
PROX Inner Clutch Hub - CRF450X 18.1405
PROX
MSRP: $82.95Now: $68.00Was: $82.95A worn or damaged inner clutch hub compromises power delivery and creates unpredictable engagement, directly impacting your lap times and ride quality. The PROX Inner Clutch Hub for the CRF450X is precision-cast and machined to OEM specifications,...11321868- SKU:
- 11321868
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
MSRP: $82.95Now: $68.00Was: $82.95 -
On Sale
PROX Inner Clutch Hub - CRF450R 18.1413
PROX
MSRP: $93.95Now: $76.00Was: $93.95If your CRF450R's clutch engagement feels inconsistent or your shifts are becoming notchy, a worn inner clutch hub is often the culprit. The PROX 18.1413 is a precision-cast, OEM-specification replacement that restores smooth, predictable clutch...11321869- SKU:
- 11321869
- Availability:
- Ships Same Business Day
- Weight:
- 0.89 LBS
MSRP: $93.95Now: $76.00Was: $93.95 -
On Sale
PROX Inner Clutch Hub - CRF450L/R/X/RX 18.1417
PROX
MSRP: $89.95Now: $76.00Was: $89.95A worn or damaged inner clutch hub compromises power delivery and creates unpredictable engagement in your CRF450. The PROX 18.1417 restores OEM-spec performance with precision-cast construction, ensuring smooth clutch modulation whether you're running...11321870- SKU:
- 11321870
- Availability:
- Ships Same Business Day
- Weight:
- 0.87 LBS
MSRP: $89.95Now: $76.00Was: $89.95 -
On Sale
PROX Inner Clutch Hub - CRF450R/RX 18.1421
PROX
MSRP: $93.95Now: $76.00Was: $93.95The inner clutch hub is critical to reliable power transfer in your CRF450R or RX—wear or damage here directly impacts throttle response and overall clutch engagement. PROX delivers a precision-cast and machined hub manufactured to OEM specifications,...11321871- SKU:
- 11321871
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
MSRP: $93.95Now: $76.00Was: $93.95 -
On Sale
PROX Inner Clutch Hub - RM-Z450 18.3421
PROX
MSRP: $99.95Now: $82.00Was: $99.95A worn or damaged inner clutch hub compromises power delivery and creates unpredictable engagement—killing your lap times and putting unnecessary stress on the entire drivetrain. The PROX Inner Clutch Hub for RM-Z450 restores OEM-specification...11321872- SKU:
- 11321872
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
MSRP: $99.95Now: $82.00Was: $99.95 -
On Sale
PROX Inner Clutch Hub - KX250F 18.4348
PROX
MSRP: $77.95Now: $64.00Was: $77.95A worn or damaged inner clutch hub compromises power transfer and can leave you stranded at the track or trailside. The PROX Inner Clutch Hub for KX250F delivers OEM-specification durability with precision casting and machining, ensuring consistent...11321873- SKU:
- 11321873
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
MSRP: $77.95Now: $64.00Was: $77.95 -
On Sale
PROX Inner Clutch Hub - KX250/X 18.4351
PROX
MSRP: $71.95Now: $55.00Was: $71.95The inner clutch hub is a critical wear component that directly impacts power transfer and clutch engagement consistency on your KX250/X. A worn or damaged hub compromises shift quality, increases slippage, and can cascade into premature clutch basket...11321874- SKU:
- 11321874
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
MSRP: $71.95Now: $55.00Was: $71.95 -
On Sale
PROX Inner Clutch Hub - Kawasaki 18.4406
PROX
MSRP: $77.95Now: $64.00Was: $77.95The inner clutch hub is the critical load-bearing component that transfers engine power to your primary clutch basket—any wear or damage here directly compromises acceleration response and overall drivetrain reliability. A quality replacement hub ensures...11321875- SKU:
- 11321875
- Availability:
- Ships Same Business Day
- Weight:
- 1.09 LBS
MSRP: $77.95Now: $64.00Was: $77.95 -
On Sale
PROX Inner Clutch Hub - KX450F/X 18.4411
PROX
MSRP: $77.95Now: $64.00Was: $77.95A worn or damaged inner clutch hub compromises power delivery and throttle response on your KX450F/X. The PROX Inner Clutch Hub is precision-cast and machined to OEM specifications, ensuring reliable engagement with both stock and aftermarket primary...11321876- SKU:
- 11321876
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $77.95Now: $64.00Was: $77.95 -
On Sale
PROX Clutch Slave Cylinder Rebuild Kit - Husqvarna 16.950012
PROX
MSRP: $71.95Now: $56.00Was: $71.95A worn or leaking clutch slave cylinder compromises your shift precision and can leave you stranded. This PROX rebuild kit gives you a complete, cost-effective solution to restore your Husqvarna's clutch actuation to factory specifications without...11321878- SKU:
- 11321878
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
MSRP: $71.95Now: $56.00Was: $71.95 -
On Sale
PROX Clutch Slave Cylinder Rebuild Kit - Gas Gas/Husqvarna/KTM 16.950013
PROX
MSRP: $71.95Now: $56.00Was: $71.95A worn or leaking clutch slave cylinder compromises your bike's clutch engagement and creates safety risks on the track or trail. This PROX rebuild kit delivers all necessary internal components to restore your cylinder to OEM specifications without the...11321879- SKU:
- 11321879
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
MSRP: $71.95Now: $56.00Was: $71.95 -
On Sale
PROX Clutch Slave Cylinder Rebuild Kit - Gas Gas/Husqvarna/KTM 16.950014
PROX
MSRP: $71.95Now: $56.00Was: $71.95A worn or leaking clutch slave cylinder compromises your shift precision and can leave you stranded. This PROX rebuild kit gives you everything needed to restore full hydraulic function without replacing the entire cylinder. Get back to reliable,...11321880- SKU:
- 11321880
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
MSRP: $71.95Now: $56.00Was: $71.95 -
On Sale
PROX Clutch Slave Cylinder Rebuild Kit - Gas Gas/Husqvarna/KTM 16.950015
PROX
MSRP: $71.95Now: $56.00Was: $71.95A worn or deteriorating clutch slave cylinder compromises your bike's clutch engagement and modulation—critical factors for precise control on the track or trail. This rebuild kit restores your hydraulic clutch system to OEM specifications, eliminating...11321881- SKU:
- 11321881
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $71.95Now: $56.00Was: $71.95Qty in Cart: 0Quantity:Price:MSRP: $71.95Now: $56.00Was: $71.95Subtotal: -
On Sale
PROX Clutch Slave Cylinder Rebuild Kit - KX250/450F/X 16.950016
PROX
MSRP: $37.95Now: $30.00Was: $37.95A worn or failing clutch slave cylinder compromises your bike's clutch engagement, leading to sluggish shifts, dragging clutch, and potential damage to your transmission. This PROX rebuild kit gives you a cost-effective alternative to replacing the...11321882- SKU:
- 11321882
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
MSRP: $37.95Now: $30.00Was: $37.95 -
On Sale
PROX Clutch Slave Cylinder Rebuild Kit - 690 Enduro R 16.950038
PROX
MSRP: $71.95Now: $56.00Was: $71.95A worn or leaking clutch slave cylinder compromises your ability to modulate power delivery precisely—critical whether you're trail riding or pushing the 690 Enduro R to its limits. This rebuild kit delivers OEM-equivalent components without the downtime...11321883- SKU:
- 11321883
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $71.95Now: $56.00Was: $71.95 -
On Sale
PROX Clutch Slave Cylinder Rebuild Kit - CRF 450R/RX 16.950040
PROX
MSRP: $37.95Now: $30.00Was: $37.95A worn or leaking clutch slave cylinder compromises your bike's engagement precision and can leave you stranded mid-ride. This PROX rebuild kit restores your CRF 450R/RX to factory hydraulic performance with OEM-equivalent components, eliminating the...11321884- SKU:
- 11321884
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $37.95Now: $30.00Was: $37.95
