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
-
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF1501.14
JT SPROCKETS
$9.20A properly sized counter shaft sprocket is critical to your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 14-tooth counter shaft sprocket delivers the precision engineering and durability required for consistent...12120752- SKU:
- 12120752
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TOOTH COUNT:
- 14
- MATERIAL:
- STEEL
- MODEL:
- KAWASAKI
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- CHAIN SIZE:
- 428
- UNITS:
- EACH
$9.20 -
JT SPROCKETS Counter Shaft Sprocket - 12-Tooth JTF1554.12
JT SPROCKETS
$14.20A 12-tooth counter shaft sprocket is the foundation of your bike's acceleration response and low-end pulling power. JT's computer-designed geometry maximizes strength while minimizing rotational mass, giving you quicker throttle response without...12120756- SKU:
- 12120756
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 12
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
$14.20 -
JT SPROCKETS Counter Shaft Sprocket - 15-Tooth JTF1594.15
JT SPROCKETS
$14.13A counter shaft sprocket is critical to your drivetrain's efficiency and longevity—it directly affects acceleration response, top-end performance, and chain wear. The JT Sprockets 15-tooth design delivers the strength-to-weight ratio you need for...12120762- SKU:
- 12120762
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- STEEL
- MODEL:
- YAMAHA
- TOOTH COUNT:
- 15
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 428
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
$14.13 -
JT SPROCKETS Counter Shaft Sprocket - 16-Tooth JTF1904.16
JT SPROCKETS
$21.70A counter shaft sprocket is one of the most critical drivetrain components—it directly affects your engine's power delivery, acceleration response, and overall gear ratios. The JT Sprockets 16-tooth counter shaft sprocket is engineered with...12120764- SKU:
- 12120764
- Availability:
- Ships Same Business Day
- Weight:
- 0.49 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- TOOTH COUNT:
- 16
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 525
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
$21.70 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF409.14
JT SPROCKETS
$11.90A worn or suboptimal counter shaft sprocket directly impacts your bike's acceleration, engine response, and overall drivetrain efficiency. The JT Sprockets 14-tooth counter shaft sprocket delivers the precision engineering and durability demanded by...12120767- SKU:
- 12120767
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 14
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
$11.90 -
JT SPROCKETS Counter Shaft Sprocket - 12-Tooth JTF337.12
JT SPROCKETS
$19.25A precision-engineered 12-tooth counter shaft sprocket designed for maximum strength-to-weight ratio, the JT Sprockets JTF337.12 delivers the reliability demanded by competitive racers and high-performance builds. Computer-optimized geometry ensures...JTF33712- SKU:
- JTF33712
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- MODEL:
- HONDA
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 12
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
$19.25 -
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF337.13
JT SPROCKETS
$15.15A worn or incorrect front sprocket directly impacts your engine's power delivery, acceleration response, and overall drivetrain efficiency. The JT Sprockets 13-tooth counter shaft sprocket is computer-designed to deliver maximum strength without excess...JTF33713- SKU:
- JTF33713
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MODEL:
- HONDA
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
$15.15 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF337.14
JT SPROCKETS
$15.15A counter shaft sprocket is critical to your transmission's efficiency and overall drivetrain performance. The JT Sprockets 14-tooth design delivers the precision engagement and durability required for high-RPM applications, whether you're tuning a...JTF33714- SKU:
- JTF33714
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- MODEL:
- HONDA
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 14
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
$15.15 -
JT SPROCKETS Counter Shaft Sprocket - 15-Tooth JTF337.15
JT SPROCKETS
$17.85A lightweight front sprocket designed to reduce unsprung mass and improve throttle response without sacrificing durability. JT's precision engineering ensures consistent power delivery and extended chain life, making this 15-tooth counter shaft sprocket...JTF33715- SKU:
- JTF33715
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERSHAFT
- CHAIN SIZE:
- 520
- MODEL:
- HONDA
- TOOTH COUNT:
- 15
$17.85 -
JT SPROCKETS Counter Shaft Sprocket - 11-Tooth JTF427.11
JT SPROCKETS
$12.38A counter shaft sprocket is fundamental to your transmission's efficiency, directly impacting acceleration response and overall drivetrain performance. The JT Sprockets 11-tooth design delivers the optimal balance between strength and weight, engineered...JTF42711- SKU:
- JTF42711
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- MODEL:
- SUZUKI
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 11
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$12.38Qty in Cart: 0Quantity:Price:$12.38Subtotal: -
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF1441.13SC
JT SPROCKETS
$17.53A properly sized counter shaft sprocket is fundamental to your bike's power delivery and overall drivetrain efficiency. The JT 13-tooth design is engineered for precise engagement with your chain, reducing slack and power loss while maintaining the...12120829- SKU:
- 12120829
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- MODEL:
- SUZUKI
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
$17.53 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF1590.14SC
JT SPROCKETS
$14.60A precisely engineered counter shaft sprocket is critical to your bike's acceleration, throttle response, and overall drivetrain efficiency. The JT Sprockets 14-tooth counter shaft sprocket delivers the strength and durability you need without...12120830- SKU:
- 12120830
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- MODEL:
- YAMAHA
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
$14.60 -
JT SPROCKETS Counter Shaft Sprocket - 12-Tooth JTF427.12SC
JT SPROCKETS
$13.95A worn or inadequate counter shaft sprocket directly impacts your bike's acceleration response and overall drivetrain efficiency. The JT Sprockets 12-tooth counter shaft sprocket is engineered for maximum strength-to-weight ratio, delivering the...12120831- SKU:
- 12120831
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- MODEL:
- SUZUKI
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 12
$13.95 -
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF558.14
JT SPROCKETS
$7.20A counter shaft sprocket is critical to your transmission's efficiency and acceleration characteristics. The JT SPROCKETS 14-tooth design delivers precise gear ratios for aggressive acceleration and quick throttle response, whether you're on the track or...JTF55814- SKU:
- JTF55814
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- MODEL:
- YAMAHA
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
$7.20 -
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF564.13
JT SPROCKETS
$10.23The JT SPROCKETS Counter Shaft Sprocket delivers precise power transfer with engineered durability, ensuring consistent acceleration and reliability across demanding racing conditions. A 13-tooth configuration offers optimal engagement for high-rpm...JTF56413- SKU:
- JTF56413
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
$10.23 -
JT SPROCKETS Sprocket - Counter-Shaft - Suzuki - 14-Tooth JTF437.14
JT SPROCKETS
$15.40A worn or mismatched counter-shaft sprocket directly impacts your bike's acceleration, chain tension, and overall drivetrain efficiency. The JT Sprockets 14-tooth counter-shaft sprocket is engineered to deliver consistent power transfer while maintaining...12121297- SKU:
- 12121297
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- TOOTH COUNT:
- 14
- CHAIN SIZE:
- 520
- MATERIAL:
- CHROMOLY STEEL
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$15.40 -
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF715.13
JT SPROCKETS
$17.35The JT Sprockets Counter Shaft Sprocket delivers the precision engagement your drivetrain demands, with computer-optimized tooth geometry that minimizes slippage and maximizes power transfer. Built from premium materials and engineered for the demands of...12120605- SKU:
- 12120605
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
$17.35 -
JT SPROCKETS Sprocket - Rear - Honda - 36-Tooth JTR1214.36
JT SPROCKETS
$17.78A sprocket is one of the most critical drivetrain components affecting acceleration, top speed, and overall chain system efficiency. The JT Sprockets 36-tooth rear sprocket delivers precision engineering with reduced rotating weight, directly translating...JTR121436- SKU:
- JTR121436
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- TOOTH COUNT:
- 36
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- MODEL:
- HONDA
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
$17.78 -
JT SPROCKETS Counter Shaft Sprocket - 17-Tooth JTF253.17
JT SPROCKETS
$6.53A properly sized counter shaft sprocket is critical for maintaining optimal chain tension and power delivery throughout your engine's RPM range. The JT Sprockets 17-tooth counter shaft sprocket delivers the precision engineering and material quality that...12120558- SKU:
- 12120558
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- TOOTH COUNT:
- 17
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MODEL:
- HONDA
- PRODUCT NAME:
- SPROCKET
$6.53 -
JT SPROCKETS Sprocket - Rear - Honda - 47-Tooth JTR1214.47
JT SPROCKETS
$18.48A worn or inefficient rear sprocket directly impacts your bike's acceleration, fuel efficiency, and overall drivetrain responsiveness. The JT Sprockets 47-Tooth Rear Sprocket is engineered for maximum strength while minimizing rotational mass, giving you...JTR121447- SKU:
- JTR121447
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- MODEL:
- HONDA
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 47
- CHAIN SIZE:
- 420
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$18.48
