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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JT SPROCKETS Counter Shaft Sprocket - 12-Tooth JTF1906.12
JT SPROCKETS
$9.83A properly sized counter shaft sprocket is fundamental to your bike's acceleration curve and overall drivetrain efficiency. The JT Sprockets 12-Tooth Counter Shaft Sprocket delivers the precision engineering and durability demanded by racers and serious...12120665- SKU:
- 12120665
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- MODEL:
- KTM
- TOOTH COUNT:
- 12
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$9.83 -
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF1906.13
JT SPROCKETS
$10.03A properly sized counter shaft sprocket is critical to your bike's power delivery and acceleration characteristics. The JT Sprockets 13-tooth design optimizes your gearing ratio for responsive throttle response while maintaining durability under...12120666- SKU:
- 12120666
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MODEL:
- KTM
- PRODUCT NAME:
- SPROCKET
$10.03 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF1906.14
JT SPROCKETS
$10.03Precision-engineered counter shaft sprockets are critical to your bike's acceleration response and overall drivetrain efficiency. The JT Sprockets 14-tooth JTF1906.14 delivers the strength-to-weight optimization you need without compromising durability...12120667- SKU:
- 12120667
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- TOOTH COUNT:
- 14
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MODEL:
- KTM
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
$10.03 -
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF1907.13
JT SPROCKETS
$11.50A properly sized counter shaft sprocket is fundamental to your bike's acceleration and top-end performance. The JT Sprockets 13-tooth delivers the strength-to-weight ratio you need for consistent, reliable power transfer without sacrificing durability...12120668- SKU:
- 12120668
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- CHAIN SIZE:
- 428
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MODEL:
- KTM
$11.50 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF1907.14
JT SPROCKETS
$11.50A properly sized counter shaft sprocket is fundamental to your bike's acceleration curve and overall drivetrain efficiency. The JT Sprockets 14-tooth design delivers the precision engineering and durability demanded by riders who refuse to compromise on...12120669- SKU:
- 12120669
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 428
- TYPE:
- COUNTERSHAFT
$11.50 -
JT SPROCKETS Counter Shaft Sprocket - 15-Tooth JTF824.15
JT SPROCKETS
$16.05A precise counter shaft sprocket is fundamental to your bike's acceleration curve and overall drivetrain efficiency. The JT Sprockets 15-Tooth Counter Shaft Sprocket (JTF824.15) is engineered to deliver consistent power delivery while minimizing...12120674- SKU:
- 12120674
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- MODEL:
- HUSQVARNA
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 15
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
$16.05 -
JT SPROCKETS Counter Shaft Sprocket - 15-Tooth JTF1309.15
JT SPROCKETS
$15.05The JT Sprockets Counter Shaft Sprocket delivers the precision and durability required for consistent power transfer in high-demand racing applications. Computer-designed for optimal strength-to-weight ratio, this 15-tooth sprocket eliminates the...12120307- SKU:
- 12120307
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- TOOTH COUNT:
- 15
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$15.05 -
JT SPROCKETS Sprocket - Rear - Honda - 40-Tooth JTR1351.40
JT SPROCKETS
$28.78Rear sprocket wear directly impacts your power delivery and acceleration response—a worn or mismatched sprocket robs you of consistent performance and increases drivetrain stress. The JT Sprockets 40-tooth rear sprocket delivers precise engagement with...JTR135140- SKU:
- JTR135140
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 40
$28.78 -
JT SPROCKETS Sprocket - Rear - Honda - 40-Tooth JTR1352.40
JT SPROCKETS
$28.78A properly sized rear sprocket is critical to your Honda's acceleration, top-end speed, and overall drivetrain efficiency. This 40-tooth JT sprocket delivers the precision engineering necessary for consistent power delivery, whether you're optimizing for...JTR135240- SKU:
- JTR135240
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 40
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MODEL:
- HONDA
- UNITS:
- EACH
$28.78 -
JT SPROCKETS Sprocket - Rear - Honda - 40-Tooth JTR1353.40
JT SPROCKETS
$27.00A worn or mismatched rear sprocket will kill your power delivery and leave you hunting for RPMs on the track or street. The JT Sprockets 40-tooth rear sprocket delivers the precise gear ratio your Honda needs for optimal acceleration and top-end...JTR135340- SKU:
- JTR135340
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 40
- MATERIAL:
- STEEL
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MODEL:
- HONDA
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
$27.00Qty in Cart: 0Quantity:Price:$27.00Subtotal: -
JT SPROCKETS Sprocket - Rear - Honda - 38-Tooth JTR1354.38
JT SPROCKETS
$27.38A properly sized rear sprocket is fundamental to optimizing your Honda's acceleration, top-end speed, and overall powertrain efficiency. This 38-tooth JT Sprockets option delivers the precise gearing you need for consistent throttle response and reduced...JTR135438- SKU:
- JTR135438
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- BLACK
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 38
- UNITS:
- EACH
$27.38 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF1441.14SC
JT SPROCKETS
$18.38A counter shaft sprocket is critical to your bike's acceleration and power delivery—choosing the right tooth count directly impacts how your engine transfers power to the wheel. The JT Sprockets 14-tooth counter shaft sprocket is engineered for riders...12120505- SKU:
- 12120505
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 14
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MODEL:
- SUZUKI
- RIDING STYLE:
- OFF-ROAD
$18.38Qty in Cart: 0Quantity:Price:$18.38Subtotal: -
JT SPROCKETS Sprocket - Rear - Honda - 50-Tooth JTR1355.50
JT SPROCKETS
$26.73A worn or mismatched rear sprocket directly impacts your Honda's acceleration, top-end speed, and engine efficiency—making the right choice critical for both street and track performance. The JT Sprockets 50-tooth rear sprocket delivers the precision...JTR135550- SKU:
- JTR135550
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MATERIAL:
- STEEL
- MODEL:
- HONDA
- CHAIN SIZE:
- 428
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$26.73 -
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF1445.13SC
JT SPROCKETS
$12.50A lightweight front sprocket is essential for optimizing your bike's acceleration and overall powertrain efficiency. The JT Sprockets 13-tooth counter shaft sprocket delivers computer-optimized geometry that maintains structural integrity while...12120507- SKU:
- 12120507
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 13
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MODEL:
- SUZUKI
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
$12.50 -
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF1565.13SC
JT SPROCKETS
$14.73Computer-designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...12120510- SKU:
- 12120510
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MODEL:
- KAWASAKI
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
- COLOR/FINISH:
- NATURAL
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
$14.73 -
JT SPROCKETS Sprocket - Rear - Honda - 42-Tooth JTR1486.42
JT SPROCKETS
$31.40Made from aviation-grade 7075-T6 aluminum alloy, optimal lightweight design and CNC-machined for performance and lifespan, Manufactured from the best materials with a special self-cleaning design, and hand-finished to perfectionJTR148642- SKU:
- JTR148642
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- MODEL:
- HONDA
- TOOTH COUNT:
- 42
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$31.40 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF432.14SC
JT SPROCKETS
$16.80Computer designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...12120518- SKU:
- 12120518
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 14
$16.80 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF565.14SC
JT SPROCKETS
$11.83Computer designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...12120522- SKU:
- 12120522
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 14
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
$11.83 -
JT SPROCKETS Sprocket - Rear - Yamaha - 54-Tooth JTR1843.54
JT SPROCKETS
$30.33Computer designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...12120114- SKU:
- 12120114
- Availability:
- Ships Same Business Day
- Weight:
- 2.09 LBS
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 54
- MODEL:
- YAMAHA
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$30.33 -
JT SPROCKETS Sprocket - Rear - Honda - 50-Tooth JTR215.50
JT SPROCKETS
$21.20Computer designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...12120116- SKU:
- 12120116
- Availability:
- Ships Same Business Day
- Weight:
- 1.71 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MODEL:
- HONDA
- MOUNTING POSITION:
- REAR
$21.20
