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!
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T.M. DESIGNWORKS Factory Edition Chain Guide With Replacement Wear Pad - Orange RCG-KT5-OR
T.M. DESIGNWORKS
$117.95Chain guides take a beating in hard enduro, baja, and motocross conditions—rocks, mud, and oversized sprockets will eventually wear through inferior designs. The T.M. Designworks Factory Edition protects your drivetrain with a proven, replaceable wear...12311697- SKU:
- 12311697
- Availability:
- Ships Same Business Day
- Weight:
- 0.84 LBS
$117.95 -
T.M. DESIGNWORKS Factory Edition Chain Guide With Replacement Wear Pad - Red RCG-KT5-RD
T.M. DESIGNWORKS
$117.95Chain slap and rock strikes can destroy your drivetrain and derail your ride—especially in hard enduro and high-abrasion terrain. The T.M. Designworks Factory Edition Chain Guide uses a proprietary RMS plastic formula that absorbs impact and returns to...12311698- SKU:
- 12311698
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
$117.95 -
T.M. DESIGNWORKS Factory Edition Chain Guide With Replacement Wear Pad - Blue RCG-KT5-BL2
T.M. DESIGNWORKS
$117.95Rock strikes and debris are chain guide killers—and a failed guide means damaged sprockets, bent frames, and lost races. The T.M. Designworks Factory Edition eliminates that risk with a reinforced design and easily replaceable wear pad, letting you push...12311696- SKU:
- 12311696
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$117.95 -
ACERBIS Chain Guide - Black - Transalp 2983400001
ACERBIS
$87.95A worn or damaged chain guide compromises both drivetrain efficiency and safety on the trail or track. The ACERBIS Chain Guide for Transalp models delivers reliable chain retention and reduced lateral movement, protecting your sprockets and maintaining...12311720- SKU:
- 12311720
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$87.95 -
On Sale
PROX Steel Plate Set - Gas Gas/Husqvarna/KTM 16.S50013
PROX
MSRP: $27.95Now: $22.00Was: $27.95Clutch plate wear is one of the fastest paths to power loss and unpredictable engagement in high-performance dirt bikes. The PROX Steel Plate Set delivers OEM-exact specifications, ensuring consistent friction characteristics and reliable clutch...11313932- SKU:
- 11313932
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
MSRP: $27.95Now: $22.00Was: $27.95 -
On Sale
PROX Steel Plate Set - Husqvarna/KTM 16.S51012
PROX
MSRP: $27.95Now: $22.00Was: $27.95Clutch plate wear is inevitable in high-demand riding, and degraded plates compromise both power delivery and rider safety. The PROX Steel Plate Set delivers OEM-spec friction surfaces that restore your clutch to factory performance standards,...11313933- SKU:
- 11313933
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
MSRP: $27.95Now: $22.00Was: $27.95 -
On Sale
PROX Steel Plate Set - Gas Gas/Husqvarna/KTM 16.S51019
PROX
MSRP: $56.95Now: $42.00Was: $56.95Clutch fade and slippage compromise acceleration and reliability—especially under demanding track or trail conditions. This ProX steel plate set is engineered to OEM specifications, ensuring consistent engagement and maximum power transfer without the...11313934- SKU:
- 11313934
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
MSRP: $56.95Now: $42.00Was: $56.95 -
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
