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 Rear Sprocket - Suzuki - 43 Tooth JTR808.43
JT SPROCKETS
MSRP: $31.08Now: $27.66Was: $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...12100716- SKU:
- 12100716
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
MSRP: $31.08Now: $27.66Was: $31.08 -
On Sale
JT SPROCKETS Rear Sprocket - 44 Tooth - KTM/Husaberg/Husqvarna JTR897.44
JT SPROCKETS
MSRP: $32.43Now: $28.86Was: $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...12100727- SKU:
- 12100727
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
MSRP: $32.43Now: $28.86Was: $32.43 -
On Sale
JT SPROCKETS Rear Sprocket - 51 Tooth - Husqvarna/Gas Gas JTR822.51
JT SPROCKETS
MSRP: $37.45Now: $33.33Was: $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...12100765- SKU:
- 12100765
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
MSRP: $37.45Now: $33.33Was: $37.45Qty in Cart: 0Quantity:Price:MSRP: $37.45Now: $33.33Was: $37.45Subtotal: -
On Sale
JT SPROCKETS Rear Sprocket - 40 Tooth - CRF250 JTR301.40
JT SPROCKETS
MSRP: $30.83Now: $27.44Was: $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...12101336- SKU:
- 12101336
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
MSRP: $30.83Now: $27.44Was: $30.83 -
On Sale
JT SPROCKETS Rear Sprocket - 48 Tooth - KTM/Husqvarna JTR894.48
JT SPROCKETS
MSRP: $20.78Now: $18.49Was: $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...12101341- SKU:
- 12101341
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $20.78Now: $18.49Was: $20.78Qty in Cart: 0Quantity:Price:MSRP: $20.78Now: $18.49Was: $20.78Subtotal: -
On Sale
JT SPROCKETS Rear Sprocket - 52 Tooth - KX100 JTR461.52
JT SPROCKETS
MSRP: $26.38Now: $23.48Was: $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...12101436- SKU:
- 12101436
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
MSRP: $26.38Now: $23.48Was: $26.38 -
On Sale
JT SPROCKETS Rear Sprocket - 39 Tooth - CRF250 JTR301.39
JT SPROCKETS
MSRP: $30.83Now: $27.44Was: $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...12101448- SKU:
- 12101448
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
MSRP: $30.83Now: $27.44Was: $30.83 -
On Sale
JT SPROCKETS Rear Sprocket - 47 Tooth - Yamaha JTR251.47
JT SPROCKETS
MSRP: $29.78Now: $26.50Was: $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...12101550- SKU:
- 12101550
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
MSRP: $29.78Now: $26.50Was: $29.78 -
On Sale
JT SPROCKETS Rear Sprocket - 40 Tooth - KTM/Husaberg/Husqvarna JTR897.40
JT SPROCKETS
MSRP: $30.35Now: $27.01Was: $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...12102677- SKU:
- 12102677
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
MSRP: $30.35Now: $27.01Was: $30.35 -
On Sale
JT SPROCKETS Rear Sprocket - 47 Tooth - KTM/Husaberg/Husqvarna JTR897.47
JT SPROCKETS
MSRP: $32.43Now: $28.86Was: $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...12102678- SKU:
- 12102678
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
MSRP: $32.43Now: $28.86Was: $32.43 -
On Sale
JT SPROCKETS Rear Sprocket - 44 Tooth - Yamaha JTR1842.44
JT SPROCKETS
MSRP: $22.58Now: $20.10Was: $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...12102689- SKU:
- 12102689
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
MSRP: $22.58Now: $20.10Was: $22.58 -
On Sale
JT SPROCKETS Rear Sprocket - 47 Tooth - XT 250 JTR1847.47
JT SPROCKETS
MSRP: $28.70Now: $25.54Was: $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...12102690- SKU:
- 12102690
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
MSRP: $28.70Now: $25.54Was: $28.70 -
On Sale
JT SPROCKETS Rear Sprocket - 51 Tooth - XT 250 JTR1847.51
JT SPROCKETS
MSRP: $33.80Now: $30.08Was: $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...12102691- SKU:
- 12102691
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
MSRP: $33.80Now: $30.08Was: $33.80Qty in Cart: 0Quantity:Price:MSRP: $33.80Now: $30.08Was: $33.80Subtotal: -
On Sale
JT SPROCKETS Rear Sprocket - 42 Tooth - Honda/Yamaha JTR245/2.42
JT SPROCKETS
MSRP: $31.33Now: $27.88Was: $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...12102698- SKU:
- 12102698
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
MSRP: $31.33Now: $27.88Was: $31.33Qty in Cart: 0Quantity:Price:MSRP: $31.33Now: $27.88Was: $31.33Subtotal: -
On Sale
JT SPROCKETS Rear Sprocket - 33 Tooth - CT70 JTR256.33
JT SPROCKETS
MSRP: $17.33Now: $15.42Was: $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...12102701- SKU:
- 12102701
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
MSRP: $17.33Now: $15.42Was: $17.33 -
On Sale
JT SPROCKETS Rear Sprocket - 43 Tooth - Kawasaki JTR460.43
JT SPROCKETS
MSRP: $31.08Now: $27.66Was: $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...12102702- SKU:
- 12102702
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
MSRP: $31.08Now: $27.66Was: $31.08Qty in Cart: 0Quantity:Price:MSRP: $31.08Now: $27.66Was: $31.08Subtotal: -
On Sale
JT SPROCKETS Rear Sprocket - 44 Tooth - Kawasaki JTR460.44
JT SPROCKETS
MSRP: $31.08Now: $27.66Was: $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...12102703- SKU:
- 12102703
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
MSRP: $31.08Now: $27.66Was: $31.08 -
On Sale
JT SPROCKETS Rear Sprocket - 48 Tooth - Suzuki JTR811.48
JT SPROCKETS
MSRP: $32.88Now: $29.26Was: $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...12102720- SKU:
- 12102720
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
MSRP: $32.88Now: $29.26Was: $32.88 -
On Sale
JT SPROCKETS Rear Sprocket - 40 Tooth - XT600 JTR857.40
JT SPROCKETS
MSRP: $27.85Now: $24.79Was: $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...12102737- SKU:
- 12102737
- Availability:
- Ships Same Business Day
- Weight:
- 1.53 LBS
MSRP: $27.85Now: $24.79Was: $27.85 -
On Sale
JT SPROCKETS Countershaft Sprocket - 12 Tooth JTF430.12
JT SPROCKETS
MSRP: $11.88Now: $10.57Was: $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...12120115- SKU:
- 12120115
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
MSRP: $11.88Now: $10.57Was: $11.88
