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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- Qty in Cart
- Quantity
- Price
- Subtotal
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JT SPROCKETS Sprocket - Rear - Yamaha - 45-Tooth JTR853.45
JT SPROCKETS
$27.78A worn or undersized rear sprocket robs your Yamaha of acceleration and top-end performance. The JT Sprockets 45-tooth rear sprocket delivers the durability and precision engineering that professional and amateur racers demand, engineered to handle...JTR85345- SKU:
- JTR85345
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 45
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$27.78 -
JT SPROCKETS Sprocket - Rear - Yamaha - 48-Tooth JTR853.48
JT SPROCKETS
$30.75A worn or inadequate rear sprocket directly impacts your bike's acceleration, top-end performance, and overall drivetrain efficiency. The JT SPROCKETS 48-tooth rear sprocket is engineered for Yamaha applications where precision gear ratios demand a...JTR85348- SKU:
- JTR85348
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$30.75 -
JT SPROCKETS Sprocket - Rear - Yamaha - 49-Tooth JTR853.49
JT SPROCKETS
$31.33A rear sprocket is critical to your drivetrain's efficiency and acceleration response—the right tooth count directly impacts your bike's power delivery and top-end performance. The JT Sprockets 49-tooth rear sprocket combines precision engineering with...JTR85349- SKU:
- JTR85349
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$31.33 -
JT SPROCKETS Sprocket - Rear - Yamaha - 50-Tooth JTR853.50
JT SPROCKETS
$31.33A lightweight rear sprocket is one of the most effective upgrades for reducing unsprung rotating weight, directly improving acceleration and handling response. The JT Sprockets 50-tooth rear sprocket combines precision engineering with proven materials...JTR85350- SKU:
- JTR85350
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$31.33 -
JT SPROCKETS Sprocket - Rear - Yamaha - 52-Tooth JTR853.52
JT SPROCKETS
$32.10A worn or mismatched rear sprocket directly impacts acceleration, top-end speed, and overall drivetrain efficiency—making sprocket selection critical for both track performance and street reliability. The JT Sprockets 52-tooth rear sprocket delivers the...JTR85352- SKU:
- JTR85352
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 52
$32.10 -
JT SPROCKETS Sprocket - Rear - Yamaha - 42-Tooth JTR857.42
JT SPROCKETS
$27.85A worn or incorrectly sized rear sprocket robs your Yamaha of power delivery and acceleration efficiency—this JT 42-tooth sprocket restores optimal chain-to-wheel ratios for responsive, predictable performance. Computer-designed and manufactured to...JTR85742- SKU:
- JTR85742
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 42
- UNITS:
- EACH
$27.85 -
JT SPROCKETS Sprocket - Rear - Yamaha - 43-Tooth JTR857.43
JT SPROCKETS
$28.78A worn or damaged rear sprocket directly impacts your power delivery, acceleration, and overall drivetrain efficiency. The JT Sprockets 43-Tooth rear sprocket for Yamaha combines computer-optimized design with premium C45 high-carbon steel to deliver...JTR85743- SKU:
- JTR85743
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 43
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
$28.78 -
JT SPROCKETS Sprocket - Rear - Yamaha - 45-Tooth JTR857.45
JT SPROCKETS
$28.78A quality rear sprocket is critical to your power delivery and drivetrain longevity. JT's 45-tooth sprocket combines computer-optimized design with premium C45 high-carbon steel to deliver the strength you need without unnecessary weight. Whether you're...JTR85745- SKU:
- JTR85745
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 45
$28.78 -
JT SPROCKETS Sprocket - Rear - Husaberg/KTM - 38-Tooth JTR897.38
JT SPROCKETS
$27.20A worn or incorrect rear sprocket directly impacts your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 38-tooth rear sprocket is engineered for Husaberg and KTM machines, delivering the strength-to-weight ratio...JTR89738- SKU:
- JTR89738
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 38
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$27.20 -
JT SPROCKETS Sprocket - Rear - Yamaha - 35-Tooth JTR834.35
JT SPROCKETS
$14.33A properly sized rear sprocket is fundamental to optimizing your Yamaha's acceleration, top-end speed, and overall power delivery. The JT Sprockets 35-tooth rear sprocket delivers the precision engineering and durability demanded by competitive riders...12100660- SKU:
- 12100660
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 35
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$14.33 -
JT SPROCKETS Sprocket - Rear - KTM - 46-Tooth JTR894.46
JT SPROCKETS
$18.60A quality rear sprocket is fundamental to your KTM's power delivery and acceleration characteristics. This 46-tooth JT sprocket is engineered for durability under high-load conditions while maintaining the precision tolerances necessary for consistent...12100661- SKU:
- 12100661
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TOOTH COUNT:
- 46
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$18.60 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF511.14
JT SPROCKETS
$17.13A properly sized counter shaft sprocket is critical for maintaining optimal power delivery and gear ratios in high-performance applications. The JT Sprockets 14-tooth design delivers the strength-to-weight ratio required for demanding track conditions...JTF51114- SKU:
- JTF51114
- Availability:
- Ships Same Business Day
- Weight:
- 0.42 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MODEL:
- KAWASAKI
- TOOTH COUNT:
- 14
- TYPE:
- COUNTERSHAFT
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$17.13 -
JT SPROCKETS Counter Shaft Sprocket - 15-Tooth JTF511.15
JT SPROCKETS
$17.63A counter shaft sprocket is critical to your bike's primary drive ratio, directly affecting acceleration response and overall powertrain efficiency. The JT Sprockets 15-tooth design delivers the strength-to-weight optimization needed for aggressive...JTF51115- SKU:
- JTF51115
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
- TOOTH COUNT:
- 15
- TYPE:
- COUNTERSHAFT
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- MODEL:
- KAWASAKI
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- UNITS:
- EACH
$17.63 -
JT SPROCKETS Rear Sprocket - Suzuki - Black - 51-Tooth JTA808.51BLK
JT SPROCKETS
$41.43Rear sprocket selection directly impacts your Suzuki's acceleration, top-end speed, and overall powertrain efficiency. The JT RaceLite 51-tooth sprocket delivers the durability and precision necessary for consistent performance, whether you're pushing...12112671- SKU:
- 12112671
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 51
$41.43 -
JT SPROCKETS Counter Shaft Sprocket - 12-Tooth JTF1321.12
JT SPROCKETS
$12.78A properly sized counter shaft sprocket is fundamental to your motorcycle's acceleration and top-end performance—this 12-tooth unit delivers the aggressive gear ratio needed for responsive throttle response and quick spool-up on forced induction setups...JTF132112- SKU:
- JTF132112
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MODEL:
- HONDA
- TOOTH COUNT:
- 12
- TYPE:
- COUNTERSHAFT
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
$12.78 -
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF1321.13
JT SPROCKETS
$12.78Counter shaft sprockets are critical to your bike's acceleration and overall drivetrain efficiency. This JT 13-tooth sprocket is engineered for maximum durability under extreme conditions while maintaining the minimal weight necessary for responsive...JTF132113- SKU:
- JTF132113
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- COLOR/FINISH:
- NATURAL
- MODEL:
- HONDA
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
- UNITS:
- EACH
$12.78 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF1322.14
JT SPROCKETS
$13.55The JT Sprockets Counter Shaft Sprocket delivers the precision engagement your drivetrain demands, engineered through computer-aided design to maximize strength without sacrificing weight. Whether you're fine-tuning gear ratios for track performance or...JTF132214- SKU:
- JTF132214
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 14
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MODEL:
- HONDA
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERSHAFT
$13.55 -
JT SPROCKETS Counter Shaft Sprocket - 11-Tooth JTF1445.11
JT SPROCKETS
$10.83A lightweight, high-strength front sprocket is critical for maximizing acceleration response and minimizing rotational inertia in demanding track conditions. The JT Sprockets 11-tooth counter shaft sprocket delivers the precision engineering and material...JTF144511- SKU:
- JTF144511
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 11
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERSHAFT
$10.83 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF1448.14
JT SPROCKETS
$14.70A properly sized counter shaft sprocket is critical for achieving your target gear ratio and maximizing power delivery to the wheel. This 14-tooth JT sprocket delivers the strength and precision required for consistent acceleration and reliable...JTF144814- SKU:
- JTF144814
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- MATERIAL:
- STEEL
- MODEL:
- SUZUKI
- CHAIN SIZE:
- 525
- MOUNTING POSITION:
- FRONT
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 14
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
$14.70 -
JT SPROCKETS Counter Shaft Sprocket - 15-Tooth JTF1448.15
JT SPROCKETS
$15.45A properly sized counter shaft sprocket is fundamental to your bike's acceleration and top-end performance—choosing the wrong tooth count means sacrificing either launch responsiveness or cruising efficiency. The JT Sprockets 15-tooth counter shaft...JTF144815- SKU:
- JTF144815
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 15
- CHAIN SIZE:
- 525
- MODEL:
- SUZUKI
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- TYPE:
- COUNTERSHAFT
$15.45
