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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HOT RODS Transmission Bearings Kit TBK0084
HOT RODS
$107.95A complete transmission rebuild demands precision bearings that can withstand the stress of primary and secondary shaft rotation without premature failure. This kit delivers Hot Rods' proven bearing quality across all critical contact points, eliminating...11060163- SKU:
- 11060163
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$107.95Qty in Cart: 0Quantity:Price:$107.95Subtotal: -
HOT RODS Transmission Bearings Kit TBK0085
HOT RODS
$116.95A transmission rebuild demands precision components that can handle repeated shock loads and sustained RPM exposure. The HOT RODS Transmission Bearings Kit TBK0085 provides OEM-quality needle and roller bearings for your primary and secondary shafts,...11060164- SKU:
- 11060164
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- TYPE:
- TRANSMISSION
$116.95 -
On Sale
JT SPROCKETS Sprocket - Rear - Suzuki - 41-Tooth JTR822.41
JT SPROCKETS
MSRP: $32.15Now: $28.61Was: $32.15A worn or incorrect sprocket directly impacts acceleration, top-end speed, and drivetrain efficiency—compromising your bike's overall performance. The JT Sprockets 41-Tooth Rear Sprocket delivers computer-optimized strength-to-weight engineering that...12100841- SKU:
- 12100841
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 41
- COLOR/FINISH:
- STEEL
- MODEL:
- SUZUKI
- PRODUCT NAME:
- SPROCKET
MSRP: $32.15Now: $28.61Was: $32.15 -
On Sale
JT SPROCKETS Sprocket - Rear - Suzuki - 44-Tooth JTR822.44
JT SPROCKETS
MSRP: $33.63Now: $29.93Was: $33.63A worn or mismatched rear sprocket directly impacts acceleration, top-end speed, and overall drivetrain efficiency on your Suzuki. The JT Sprockets 44-tooth rear sprocket delivers the precise engagement and durability your bike demands, whether you're...12100842- SKU:
- 12100842
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- STEEL
- MATERIAL:
- STEEL
- MODEL:
- SUZUKI
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 44
MSRP: $33.63Now: $29.93Was: $33.63 -
On Sale
JT SPROCKETS Sprocket - Rear - Honda - 38-Tooth JTR210.38
JT SPROCKETS
MSRP: $27.75Now: $24.70Was: $27.75A worn or inadequate rear sprocket compromises acceleration, top-end performance, and chain longevity across the entire drivetrain. The JT Sprockets 38-tooth rear sprocket delivers computer-optimized strength without excess weight, ensuring reliable...12100630- SKU:
- 12100630
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- CHAIN SIZE:
- 520
- MODEL:
- HONDA
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 38
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
MSRP: $27.75Now: $24.70Was: $27.75 -
On Sale
JT SPROCKETS Sprocket - Rear - Honda - 39-Tooth JTR210.39
JT SPROCKETS
MSRP: $27.75Now: $24.70Was: $27.75A worn or inadequate rear sprocket directly impacts your bike's acceleration, top-end speed, and chain longevity. The JT Sprockets 39-Tooth Rear Sprocket is engineered using computer-aided design and premium C45 high-carbon steel to deliver the...12100631- SKU:
- 12100631
- Availability:
- Ships Same Business Day
- Weight:
- 1.37 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- MODEL:
- HONDA
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 39
- MOUNTING POSITION:
- REAR
MSRP: $27.75Now: $24.70Was: $27.75 -
On Sale
JT SPROCKETS Sprocket - Rear - Kawasaki - 39-Tooth JTR460.39
JT SPROCKETS
MSRP: $31.08Now: $27.66Was: $31.08A rear sprocket is fundamental to your drivetrain's efficiency, directly impacting acceleration, top speed, and chain longevity. The JT Sprockets 39-tooth rear sprocket combines precision engineering with proven materials to deliver consistent...12100640- SKU:
- 12100640
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 39
MSRP: $31.08Now: $27.66Was: $31.08 -
On Sale
JT SPROCKETS Sprocket - Rear - Kawasaki - 42-Tooth JTR460.42
JT SPROCKETS
MSRP: $31.08Now: $27.66Was: $31.08A lightweight rear sprocket is one of the highest-impact upgrades you can make to reduce unsprung rotating mass and sharpen throttle response. The JT Sprockets 42-tooth rear sprocket delivers the strength of traditional steel construction while...12100641- SKU:
- 12100641
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 42
MSRP: $31.08Now: $27.66Was: $31.08 -
On Sale
JT SPROCKETS Sprocket - Rear - Kawasaki - 51-Tooth JTR797.51
JT SPROCKETS
MSRP: $23.30Now: $20.74Was: $23.30A rear sprocket is fundamental to your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 51-tooth rear sprocket delivers the precise gear ratio tuning that separates competitive lap times from the rest, while its...12100654- SKU:
- 12100654
- Availability:
- Ships Same Business Day
- Weight:
- 1.62 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
MSRP: $23.30Now: $20.74Was: $23.30Qty in Cart: 0Quantity:Price:MSRP: $23.30Now: $20.74Was: $23.30Subtotal: -
On Sale
JT SPROCKETS Sprocket - Rear - Kawasaki - 57-Tooth JTR797.57
JT SPROCKETS
MSRP: $29.15Now: $25.94Was: $29.15A 57-tooth rear sprocket is the foundation of your drivetrain's acceleration and top-end capability—get the gearing wrong, and you're leaving performance on the table. JT Sprockets delivers precision-engineered rear sprockets that combine high-strength...12100655- SKU:
- 12100655
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 57
MSRP: $29.15Now: $25.94Was: $29.15Qty in Cart: 0Quantity:Price:MSRP: $29.15Now: $25.94Was: $29.15Subtotal: -
On Sale
JT SPROCKETS Sprocket - Honda - 45-Tooth JTR301.45
JT SPROCKETS
MSRP: $31.33Now: $27.88Was: $31.33A sprocket is only as reliable as its material and manufacturing process—and JT Sprockets delivers both in spades. This 45-tooth sprocket is engineered for durability and precision, combining computer-optimized design with high-carbon steel construction...12100508- SKU:
- 12100508
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
MSRP: $31.33Now: $27.88Was: $31.33 -
On Sale
JT SPROCKETS Sprocket - Honda - 48-Tooth JTR301.48
JT SPROCKETS
MSRP: $33.88Now: $30.15Was: $33.88A properly sized sprocket is critical to maximizing chain efficiency and maintaining optimal power delivery to your rear wheel. This 48-tooth JT sprocket delivers the strength and precision required for consistent performance, whether you're pushing hard...12100509- SKU:
- 12100509
- Availability:
- Ships Same Business Day
- Weight:
- 1.73 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
MSRP: $33.88Now: $30.15Was: $33.88 -
On Sale
JT SPROCKETS Front Counter-Shaft Sprocket - 13 Tooth JTF1344.13SC
JT SPROCKETS
MSRP: $15.05Now: $13.39Was: $15.05A properly sized counter-shaft sprocket is fundamental to maximizing your engine's power delivery and maintaining optimal gear ratios across your entire drivetrain. The JT Sprockets 13-tooth front counter-shaft sprocket delivers the strength required for...12121552- SKU:
- 12121552
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- COLOR/FINISH:
- SILVER
- MOUNTING POSITION:
- FRONT
- TOOTH COUNT:
- 13
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- SELF-CLEANING
MSRP: $15.05Now: $13.39Was: $15.05 -
On Sale
JT SPROCKETS Front Counter-Shaft Sprocket - 14 Tooth JTF1344.14SC
JT SPROCKETS
MSRP: $16.28Now: $14.49Was: $16.28A properly sized counter-shaft sprocket is critical for maintaining optimal power delivery and engine efficiency in your racing application. The JT Sprockets 14-tooth front counter-shaft sprocket delivers the strength-to-weight ratio you need without...12121553- SKU:
- 12121553
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- SILVER
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- SELF-CLEANING
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- TOOTH COUNT:
- 14
MSRP: $16.28Now: $14.49Was: $16.28 -
On Sale
JT SPROCKETS Front Counter-Shaft Sprocket - 12 Tooth JTF284.12
JT SPROCKETS
MSRP: $14.25Now: $12.68Was: $14.25A properly sized counter-shaft sprocket is critical to your engine's power delivery and overall drivetrain efficiency. The JT Sprockets 12-tooth front counter-shaft sprocket is computer-optimized to deliver maximum strength while keeping rotational mass...12121721- SKU:
- 12121721
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- CHROMOLY STEEL
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- SOLID
- TOOTH COUNT:
- 12
- COLOR/FINISH:
- SILVER
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- ATV
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
MSRP: $14.25Now: $12.68Was: $14.25 -
On Sale
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF1310.14SC
JT SPROCKETS
MSRP: $9.60Now: $8.54Was: $9.60A properly sized counter shaft sprocket is critical for achieving your target gearing and maintaining reliable power delivery through the drivetrain. The JT Sprockets 14-tooth design delivers the precision geometry and durability you need for consistent...12121208- SKU:
- 12121208
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- CHAIN SIZE:
- 420
- UNITS:
- EACH
- MODEL:
- HONDA
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 14
MSRP: $9.60Now: $8.54Was: $9.60 -
On Sale
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF1442.13SC
JT SPROCKETS
MSRP: $17.63Now: $15.69Was: $17.63Counter shaft sprockets are critical to your bike's acceleration and overall drivetrain efficiency—a worn or undersized sprocket directly impacts throttle response and engine load. The JT 13-tooth sprocket delivers precision-engineered performance...12120941- SKU:
- 12120941
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- STEEL
- MODEL:
- SUZUKI
- TOOTH COUNT:
- 13
MSRP: $17.63Now: $15.69Was: $17.63Qty in Cart: 0Quantity:Price:MSRP: $17.63Now: $15.69Was: $17.63Subtotal: -
On Sale
JT SPROCKETS Counter Shaft Sprocket - 14-Tooth JTF1442.14SC
JT SPROCKETS
MSRP: $17.63Now: $15.69Was: $17.63A worn or damaged counter shaft sprocket directly compromises your bike's acceleration, chain wear patterns, and overall drivetrain efficiency. The JT Sprockets 14-Tooth Counter Shaft Sprocket delivers computer-optimized tooth geometry and premium...12120942- SKU:
- 12120942
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MODEL:
- SUZUKI
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 14
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
MSRP: $17.63Now: $15.69Was: $17.63Qty in Cart: 0Quantity:Price:MSRP: $17.63Now: $15.69Was: $17.63Subtotal: -
On Sale
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF1443.13SC
JT SPROCKETS
MSRP: $17.53Now: $15.60Was: $17.53A precision counter shaft sprocket is critical to your drivetrain's efficiency and longevity. The JT Sprockets 13-tooth design delivers optimal power transfer while minimizing rotational mass, which translates to faster acceleration and reduced wear on...12120943- SKU:
- 12120943
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MODEL:
- SUZUKI
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
MSRP: $17.53Now: $15.60Was: $17.53 -
On Sale
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF1501.13
JT SPROCKETS
MSRP: $8.30Now: $7.39Was: $8.30The counter shaft sprocket is the critical link between your engine's output and your bike's acceleration. A worn or undersized sprocket directly kills throttle response and top-end performance—upgrading to JT's 13-tooth design gives you the precision...12120751- SKU:
- 12120751
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- CHAIN SIZE:
- 428
- TOOTH COUNT:
- 13
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MODEL:
- KAWASAKI
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
MSRP: $8.30Now: $7.39Was: $8.30
