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 Countershaft Sprocket - 13 Tooth - Honda JTF1345.13RB
JT SPROCKETS
$14.65Worn or incorrect countershaft sprockets directly impact power delivery, throttle response, and overall drivetrain efficiency. This 13-tooth JT sprocket restores precise gear engagement while the SCM420 chromoly construction ensures durability through...12121686- SKU:
- 12121686
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$14.65 -
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Husqvarna/KTM JTF1902.15RB
JT SPROCKETS
$17.08A worn or incorrect countershaft sprocket directly impacts your bike's acceleration, top-end performance, and overall drivetrain efficiency. Whether you're dialing in gearing for track conditions or replacing a damaged sprocket, the JT Sprockets 15-tooth...12121687- SKU:
- 12121687
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$17.08 -
JT SPROCKETS Countershaft Sprocket - 16 Tooth - Beta JTF432.16
JT SPROCKETS
$14.20A reliable countershaft sprocket is critical for maintaining precise power delivery and chain engagement in your Beta drivetrain. This JT Sprockets 16-tooth unit is engineered from SCM420 chromoly steel—a material choice that delivers superior wear...12121929- SKU:
- 12121929
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$14.20 -
JT SPROCKETS Rear Sprocket - Suzuki - 43 Tooth JTR808.43
JT SPROCKETS
$31.08A rear sprocket is fundamental to your drivetrain's performance—it directly affects acceleration, top speed, and overall power delivery. The JT Sprockets 43-tooth rear sprocket for Suzuki combines precision engineering with proven durability, giving you...12100716- SKU:
- 12100716
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
$31.08 -
JT SPROCKETS Rear Sprocket - 44 Tooth - KTM/Husaberg/Husqvarna JTR897.44
JT SPROCKETS
$32.43A worn or incorrect rear sprocket directly impacts your bike's acceleration, top speed, and overall drivetrain efficiency. The JT Sprockets 44-tooth rear sprocket delivers precise gear ratios while maintaining the durability required for aggressive...12100727- SKU:
- 12100727
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
$32.43 -
JT SPROCKETS Rear Sprocket - 51 Tooth - Husqvarna/Gas Gas JTR822.51
JT SPROCKETS
$37.45Proper sprocket sizing is critical for optimizing your Husqvarna or Gas Gas's power delivery and acceleration characteristics. The JT Sprockets 51-tooth rear sprocket delivers the strength and durability demanded by competitive riders and serious...12100765- SKU:
- 12100765
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
$37.45 -
JT SPROCKETS Rear Sprocket - 40 Tooth - CRF250 JTR301.40
JT SPROCKETS
$30.83A worn or mismatched rear sprocket directly impacts your CRF250's acceleration, top-end speed, and overall drivetrain efficiency. This JT Sprockets 40-tooth replacement delivers the precise gearing you need for consistent performance, whether you're...12101336- SKU:
- 12101336
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$30.83 -
JT SPROCKETS Rear Sprocket - 48 Tooth - KTM/Husqvarna JTR894.48
JT SPROCKETS
$20.78A worn or incorrect sprocket directly impacts your acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 48-tooth rear sprocket is engineered to deliver the precise gear ratio your KTM or Husqvarna needs while maintaining the...12101341- SKU:
- 12101341
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$20.78 -
JT SPROCKETS Rear Sprocket - 52 Tooth - KX100 JTR461.52
JT SPROCKETS
$26.38A worn or mismatched rear sprocket directly impacts your KX100's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 52-tooth rear sprocket restores optimal power delivery and ensures consistent performance lap after lap...12101436- SKU:
- 12101436
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
$26.38 -
JT SPROCKETS Rear Sprocket - 39 Tooth - CRF250 JTR301.39
JT SPROCKETS
$30.83A properly sized rear sprocket directly impacts your CRF250's acceleration, top-end speed, and overall power delivery. The 39-tooth configuration strikes an optimal balance between low-end responsiveness and highway capability, making it essential for...12101448- SKU:
- 12101448
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
$30.83 -
JT SPROCKETS Rear Sprocket - 47 Tooth - Yamaha JTR251.47
JT SPROCKETS
$29.78A worn or incorrect sprocket directly impacts your bike's acceleration, top-end speed, and chain wear—making the right rear sprocket critical for any serious rider. The JT Sprockets 47-tooth rear sprocket delivers the durability and precision needed for...12101550- SKU:
- 12101550
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
$29.78 -
JT SPROCKETS Rear Sprocket - 40 Tooth - KTM/Husaberg/Husqvarna JTR897.40
JT SPROCKETS
$30.35A worn or incorrect rear sprocket directly impacts your bike's acceleration, top-end speed, and overall drivability—making this one of the most important drivetrain upgrades you can make. The JT Sprockets 40-tooth rear sprocket delivers the strength and...12102677- SKU:
- 12102677
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
$30.35 -
JT SPROCKETS Rear Sprocket - 47 Tooth - KTM/Husaberg/Husqvarna JTR897.47
JT SPROCKETS
$32.43A worn or undersized rear sprocket robs your KTM, Husaberg, or Husqvarna of acceleration and top-end performance. The JT Sprockets 47-tooth rear sprocket restores that lost drive while maintaining the durability you need for serious riding—whether you're...12102678- SKU:
- 12102678
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
$32.43 -
JT SPROCKETS Rear Sprocket - 44 Tooth - Yamaha JTR1842.44
JT SPROCKETS
$22.58A worn or incorrect rear sprocket directly impacts your Yamaha's acceleration, top-end speed, and engine efficiency. The JT Sprockets 44-tooth rear sprocket restores optimal gearing characteristics while delivering the durability needed for consistent...12102689- SKU:
- 12102689
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
$22.58 -
JT SPROCKETS Rear Sprocket - 47 Tooth - XT 250 JTR1847.47
JT SPROCKETS
$28.70A worn or incorrect sprocket directly impacts your XT 250's acceleration, top speed, and overall drivetrain efficiency. The JT Sprockets 47-tooth rear sprocket is engineered for precise engagement with your chain, delivering consistent power delivery...12102690- SKU:
- 12102690
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$28.70Qty in Cart: 0Quantity:Price:$28.70Subtotal: -
JT SPROCKETS Rear Sprocket - 51 Tooth - XT 250 JTR1847.51
JT SPROCKETS
$33.80A worn or incorrect rear sprocket directly impacts your XT 250's acceleration, top-end speed, and overall drivetrain efficiency. This 51-tooth JT Sprocket delivers the precise gear ratio you need for reliable power delivery, whether you're chasing track...12102691- SKU:
- 12102691
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
$33.80Qty in Cart: 0Quantity:Price:$33.80Subtotal: -
JT SPROCKETS Rear Sprocket - 42 Tooth - Honda/Yamaha JTR245/2.42
JT SPROCKETS
$31.33A worn or incorrect rear sprocket directly impacts your bike's acceleration, top-end speed, and overall driveability. The JT Sprockets 42-tooth rear sprocket is engineered to deliver consistent power transfer with minimal drivetrain losses, whether...12102698- SKU:
- 12102698
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
$31.33Qty in Cart: 0Quantity:Price:$31.33Subtotal: -
JT SPROCKETS Rear Sprocket - 33 Tooth - CT70 JTR256.33
JT SPROCKETS
$17.33A worn or incorrect rear sprocket directly impacts your CT70's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 33-tooth rear sprocket delivers the precision engineering and durability required for consistent performance,...12102701- SKU:
- 12102701
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
$17.33 -
JT SPROCKETS Rear Sprocket - 43 Tooth - Kawasaki JTR460.43
JT SPROCKETS
$31.08A worn or mismatched rear sprocket directly impacts your acceleration, top-end speed, and engine efficiency. The JT Sprockets 43-tooth rear sprocket is engineered to deliver reliable power transfer with minimal rotational mass, giving you the responsive...12102702- SKU:
- 12102702
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
$31.08 -
JT SPROCKETS Rear Sprocket - 44 Tooth - Kawasaki JTR460.44
JT SPROCKETS
$31.08A worn or mismatched rear sprocket directly impacts your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 44-tooth rear sprocket delivers the strength and precision you need to handle aggressive riding without...12102703- SKU:
- 12102703
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
$31.08
