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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- Price
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On Sale
JT SPROCKETS Countershaft Sprocket - 13 Tooth JTF1901.13
JT SPROCKETS
MSRP: $12.75Now: $11.35Was: $12.75A 13-tooth countershaft sprocket is the foundation of your bike's acceleration profile—getting the ratio right means the difference between sluggish takeoff and crisp, responsive power delivery. If...12121954- SKU:
- 12121954
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $12.75Now: $11.35Was: $12.75 -
On Sale
JT SPROCKETS Countershaft Sprocket - 13 Tooth - Husqvarna/KTM JTF1905.13
JT SPROCKETS
MSRP: $10.03Now: $8.93Was: $10.03A worn or damaged countershaft sprocket directly impacts your power delivery and throttle response—replace it with this precision-engineered JT sprocket to restore peak drivetrain efficiency. Built...12121956- SKU:
- 12121956
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
MSRP: $10.03Now: $8.93Was: $10.03 -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - KTM/Husqvarna JTF1905.14
JT SPROCKETS
MSRP: $10.03Now: $8.93Was: $10.03A worn or incorrect countershaft sprocket directly impacts your KTM or Husqvarna's acceleration response, chain wear, and overall drivetrain efficiency. This 14-tooth replacement from JT Sprockets...12121957- SKU:
- 12121957
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $10.03Now: $8.93Was: $10.03 -
On Sale
JT SPROCKETS Countershaft Sprocket - 13 Tooth - CR125R JTF266.13
JT SPROCKETS
MSRP: $13.15Now: $11.70Was: $13.15A worn or damaged countershaft sprocket directly impacts your CR125R's power delivery and acceleration consistency. This JT Sprockets replacement ensures precise chain engagement and maintains...12121958- SKU:
- 12121958
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
MSRP: $13.15Now: $11.70Was: $13.15Qty in Cart: 0Quantity:Price:MSRP: $13.15Now: $11.70Was: $13.15Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 13 Tooth - KLX150 JTF273.13
JT SPROCKETS
MSRP: $7.20Now: $6.41Was: $7.20The countershaft sprocket is the critical link between your engine's power delivery and wheel acceleration on the KLX150. A worn or incorrect sprocket directly impacts throttle response, top-end...12121961- SKU:
- 12121961
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $7.20Now: $6.41Was: $7.20 -
On Sale
JT SPROCKETS Countershaft Sprocket - 13 Tooth - XR/CRF100 JTF274.13
JT SPROCKETS
MSRP: $7.20Now: $6.41Was: $7.20A worn or damaged countershaft sprocket directly impacts your XR/CRF100's acceleration response and overall drivetrain efficiency. This OEM-compatible replacement restores precise power delivery to...12121962- SKU:
- 12121962
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $7.20Now: $6.41Was: $7.20 -
On Sale
JT SPROCKETS Countershaft Sprocket - 16 Tooth - Honda JTF281.16
JT SPROCKETS
MSRP: $14.03Now: $12.49Was: $14.03A worn or stock countershaft sprocket directly impacts your Honda's acceleration, throttle response, and drivetrain reliability. The JT Sprockets 16-tooth countershaft sprocket delivers the precision...12121964- SKU:
- 12121964
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
MSRP: $14.03Now: $12.49Was: $14.03 -
On Sale
JT SPROCKETS Countershaft Sprocket - 13 Tooth - Honda JTF284.13
JT SPROCKETS
MSRP: $12.58Now: $11.20Was: $12.58A 13-tooth countershaft sprocket directly improves your Honda's acceleration response and power delivery to the rear wheel by optimizing your primary gear ratio. If you're looking for sharper...12121965- SKU:
- 12121965
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
MSRP: $12.58Now: $11.20Was: $12.58 -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Honda JTF284.14
JT SPROCKETS
MSRP: $12.58Now: $11.20Was: $12.58A worn or incorrect countershaft sprocket directly impacts your Honda's acceleration, top-end performance, and chain longevity. This 14-tooth JT sprocket restores precise power delivery and handling...12121966- SKU:
- 12121966
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
MSRP: $12.58Now: $11.20Was: $12.58 -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Honda JTF287.15
JT SPROCKETS
MSRP: $14.30Now: $12.73Was: $14.30A worn or damaged countershaft sprocket directly compromises your engine's power delivery and overall drivetrain efficiency. This JT Sprockets 15-tooth countershaft sprocket restores precise gear...12121967- SKU:
- 12121967
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
MSRP: $14.30Now: $12.73Was: $14.30 -
On Sale
JT SPROCKETS Countershaft Sprocket - 17 Tooth - BMW/Husqvarna JTF402.17
JT SPROCKETS
MSRP: $18.70Now: $16.64Was: $18.70A worn or damaged countershaft sprocket directly impacts your BMW or Husqvarna's acceleration response and overall drivetrain efficiency. This OEM-equivalent JT Sprockets component restores precise...12121974- SKU:
- 12121974
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
MSRP: $18.70Now: $16.64Was: $18.70 -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Kawasaki JTF418.14
JT SPROCKETS
MSRP: $7.20Now: $6.41Was: $7.20A worn or damaged countershaft sprocket directly impacts your power delivery and throttle response—don't compromise your transmission's efficiency with inferior parts. JT Sprockets engineered this...12121975- SKU:
- 12121975
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $7.20Now: $6.41Was: $7.20Qty in Cart: 0Quantity:Price:MSRP: $7.20Now: $6.41Was: $7.20Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Suzuki JTF431.14
JT SPROCKETS
MSRP: $16.20Now: $14.42Was: $16.20A worn or damaged countershaft sprocket directly impacts your power delivery and clutch engagement, compromising both acceleration and shift quality. This JT Sprockets 14-tooth replacement restores...12121984- SKU:
- 12121984
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
MSRP: $16.20Now: $14.42Was: $16.20 -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Suzuki JTF433.14
JT SPROCKETS
MSRP: $11.30Now: $10.06Was: $11.30A worn or damaged countershaft sprocket directly impacts your transmission's efficiency and throttle response. The JT Sprockets 14-tooth countershaft sprocket delivers reliable power transfer with...12121987- SKU:
- 12121987
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $11.30Now: $10.06Was: $11.30Qty in Cart: 0Quantity:Price:MSRP: $11.30Now: $10.06Was: $11.30Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Suzuki JTF433.15
JT SPROCKETS
MSRP: $11.30Now: $10.06Was: $11.30A worn or damaged countershaft sprocket directly compromises your bike's power delivery and acceleration response. This OEM-specification JT sprocket restores precise gear engagement and maintains...12121988- SKU:
- 12121988
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
MSRP: $11.30Now: $10.06Was: $11.30Qty in Cart: 0Quantity:Price:MSRP: $11.30Now: $10.06Was: $11.30Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 16 Tooth - Suzuki JTF433.16
JT SPROCKETS
MSRP: $12.78Now: $11.37Was: $12.78A worn or damaged countershaft sprocket directly impacts power delivery and throttle response in your Suzuki's transmission. This JT Sprockets 16-tooth replacement restores precise gear engagement...12121989- SKU:
- 12121989
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
MSRP: $12.78Now: $11.37Was: $12.78Qty in Cart: 0Quantity:Price:MSRP: $12.78Now: $11.37Was: $12.78Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Suzuki JTF437.15
JT SPROCKETS
MSRP: $15.40Now: $13.71Was: $15.40A worn or damaged countershaft sprocket directly impacts your power delivery and acceleration consistency. This JT Sprockets 15-tooth countershaft sprocket restores precise engagement with your...12121991- SKU:
- 12121991
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
MSRP: $15.40Now: $13.71Was: $15.40 -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Gas Gas/Yamaha JTF564.14
JT SPROCKETS
MSRP: $10.23Now: $9.10Was: $10.23A properly sized countershaft sprocket is critical to optimizing your dirt bike's power delivery and acceleration characteristics. This JT Sprockets 14-tooth unit delivers the precise gear ratio you...12122001- SKU:
- 12122001
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
MSRP: $10.23Now: $9.10Was: $10.23Qty in Cart: 0Quantity:Price:MSRP: $10.23Now: $9.10Was: $10.23Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 13 Tooth JTF575.13
JT SPROCKETS
MSRP: $13.45Now: $11.97Was: $13.45A 13-tooth countershaft sprocket directly influences your acceleration curve and overall drivetrain efficiency. If you're chasing quicker throttle response and tighter gear ratios, this is a critical...12122008- SKU:
- 12122008
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $13.45Now: $11.97Was: $13.45Qty in Cart: 0Quantity:Price:MSRP: $13.45Now: $11.97Was: $13.45Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 13 Tooth - Ducati JTF736.13
JT SPROCKETS
MSRP: $25.60Now: $22.78Was: $25.60A properly sized countershaft sprocket is critical for achieving your target power delivery and acceleration characteristics. This JT Sprockets 13-tooth unit maintains the precision tolerances...12122009- SKU:
- 12122009
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
MSRP: $25.60Now: $22.78Was: $25.60
