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 Rear Sprocket - 48 Tooth - Suzuki JTR811.48
JT SPROCKETS
$32.88A worn or incorrect rear sprocket directly impacts your Suzuki's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 48-tooth rear sprocket delivers the durability and precision needed for consistent power delivery, whether...12102720- SKU:
- 12102720
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
$32.88 -
JT SPROCKETS Rear Sprocket - 40 Tooth - XT600 JTR857.40
JT SPROCKETS
$27.85A worn or incorrect rear sprocket directly impacts your XT600's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 40-tooth rear sprocket delivers the precision engineering and durability you need to maintain consistent...12102737- SKU:
- 12102737
- Availability:
- Ships Same Business Day
- Weight:
- 1.53 LBS
$27.85Qty in Cart: 0Quantity:Price:$27.85Subtotal: -
JT SPROCKETS Countershaft Sprocket - 12 Tooth JTF430.12
JT SPROCKETS
$11.88A properly sized countershaft sprocket is critical to maximizing your engine's power delivery and achieving optimal gear ratios for your specific application. The JT Sprockets 12-tooth countershaft sprocket is computer-designed to deliver maximum...12120115- SKU:
- 12120115
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
$11.88 -
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Husaberg/KTM JTF1901.15
JT SPROCKETS
$12.75A worn or damaged countershaft sprocket robs your Husaberg or KTM of efficient power transfer and increases drivetrain wear across the entire transmission system. This 15-tooth JT sprocket delivers precise engagement and reliable durability through its...12120222- SKU:
- 12120222
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
$12.75 -
JT SPROCKETS Countershaft Sprocket - 14 Tooth JTF823.14
JT SPROCKETS
$14.15A properly sized countershaft sprocket is critical to optimizing your drivetrain's power delivery and acceleration characteristics. The JT Sprockets 14-tooth design delivers the strength and precision needed for high-RPM applications without adding...12120231- SKU:
- 12120231
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
$14.15 -
JT SPROCKETS Countershaft Sprocket - 15 Tooth JTF327.15
JT SPROCKETS
$14.23A worn or undersized countershaft sprocket robs your motorcycle of crisp throttle response and efficient power delivery. The JT Sprockets 15-tooth countershaft sprocket delivers reliable engagement and precise gear ratios, giving you the mechanical...12120571- SKU:
- 12120571
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$14.23 -
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Honda/Kawasaki JTF273.14
JT SPROCKETS
$7.20A worn or damaged countershaft sprocket directly impacts acceleration, engine response, and drivetrain efficiency—especially in racing applications where precise power delivery matters. This JT Sprockets 14-tooth countershaft sprocket delivers the...12120787- SKU:
- 12120787
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$7.20 -
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Yamaha JTF548.14
JT SPROCKETS
$7.20A worn or damaged countershaft sprocket directly impacts your power delivery and throttle response. This OEM-spec JT Sprocket delivers the precise engagement and durability you need to maintain consistent acceleration without slippage or premature wear...12120789- SKU:
- 12120789
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$7.20 -
JT SPROCKETS Countershaft Sprocket - 15 Tooth - KLX150L JTF273.15
JT SPROCKETS
$7.20A worn or damaged countershaft sprocket directly impacts your KLX150L's acceleration, chain tension, and overall drivetrain efficiency. This OEM-specification replacement restores proper gear engagement and power delivery, whether you're racing or...12120793- SKU:
- 12120793
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$7.20 -
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Honda JTF277.14
JT SPROCKETS
$7.20The countershaft sprocket is critical to your Honda's acceleration curve and throttle response—choose the wrong tooth count and you're leaving performance on the table. This 14-tooth JT sprocket shifts the power delivery band to favor aggressive...12120933- SKU:
- 12120933
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$7.20 -
JT SPROCKETS Countershaft Sprocket - 16 Tooth - Honda JTF1309.16
JT SPROCKETS
$20.05A worn or damaged countershaft sprocket compromises your entire drivetrain's efficiency and acceleration response. This JT Sprockets 16-tooth replacement restores precise power delivery to your rear wheel with the durability required for consistent track...12121147- SKU:
- 12121147
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$20.05 -
JT SPROCKETS Countershaft Sprocket - 11 Tooth - KTM JTF1901.11
JT SPROCKETS
$12.75A worn or damaged countershaft sprocket directly compromises power delivery and throttle response on your KTM. This JT Sprockets 11-tooth replacement restores precise engagement between your engine and transmission, ensuring consistent acceleration and...12121152- SKU:
- 12121152
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$12.75 -
JT SPROCKETS Countershaft Sprocket - 16 Tooth JTF1901.16SC
JT SPROCKETS
$19.13A worn or mismatched countershaft sprocket directly impacts your motorcycle's power delivery and acceleration characteristics. This 16-tooth JT sprocket restores crisp throttle response and maintains consistent gear ratios critical for track performance...12121153- SKU:
- 12121153
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$19.13 -
JT SPROCKETS Countershaft Sprocket - 16 Tooth - Yamaha JTF546.16
JT SPROCKETS
$6.53A worn or undersized countershaft sprocket robs your Yamaha of acceleration and throttle responsiveness. This 16-tooth sprocket restores crisp power delivery and optimizes your gearing for aggressive riding, whether you're on the track or pushing harder...12122000- SKU:
- 12122000
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$6.53 -
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Gas Gas/Husqvarna/KTM JTF1906.15
JT SPROCKETS
$10.95A worn or damaged countershaft sprocket directly impacts your bike's acceleration, engine response, and overall drivetrain efficiency. The JT Sprockets 15-tooth countershaft sprocket is engineered to restore crisp power delivery and reliable engagement,...12121209- SKU:
- 12121209
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$10.95 -
JT SPROCKETS Countershaft Sprocket - 15 Tooth - DRZ125/L JTF409.15
JT SPROCKETS
$11.90The countershaft sprocket is a critical drivetrain component that directly affects your DRZ125/L's acceleration, top speed, and overall power delivery. A worn or damaged sprocket will cause chain slippage, poor shifting response, and accelerated wear on...12121224- SKU:
- 12121224
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$11.90 -
JT SPROCKETS Countershaft Sprocket - 13 Tooth - XR/XL250 JTF1265.13
JT SPROCKETS
$10.03A precision countershaft sprocket is critical to your XR/XL250's power delivery and chain longevity. JT Sprockets' 13-tooth design combines computer-optimized tooth geometry with induction-hardened steel to handle aggressive acceleration while minimizing...12121289- SKU:
- 12121289
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$10.03 -
JT SPROCKETS Countershaft Sprocket - 13 Tooth - KX250F JTF1446.13
JT SPROCKETS
$12.83A worn or damaged countershaft sprocket directly impacts throttle response, power delivery, and overall drivetrain efficiency on your KX250F. Upgrading to JT's precision-engineered 13-tooth countershaft sprocket restores the critical gear ratio interface...12121557- SKU:
- 12121557
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$12.83 -
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Kawasaki JTF511.15RB
JT SPROCKETS
$17.63A 15-tooth countershaft sprocket directly impacts your bike's power delivery and acceleration characteristics. By reducing the gear ratio, this JT Sprockets component pulls harder out of corners and during low-rpm acceleration—ideal if you're running a...12121930- SKU:
- 12121930
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$17.63 -
JT SPROCKETS Countershaft Sprocket - 13 Tooth - DR650 JTF1448.13
JT SPROCKETS
$14.70A worn or damaged countershaft sprocket directly impacts power delivery and throttle response on your DR650. This OEM-equivalent replacement restores precise gear engagement and eliminates chain slap, ensuring consistent acceleration and reliable...12121944- SKU:
- 12121944
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
$14.70
