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 TBK0037
HOT RODS
$107.95Transmission bearing failure is one of the most costly failures you can experience—and one of the most preventable. Whether you're rebuilding a transmission or installing a fresh engine case, the HOT...11060123- SKU:
- 11060123
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- PRODUCT NAME:
- BEARING KIT
- TYPE:
- TRANSMISSION
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$107.95Qty in Cart: 0Quantity:Price:$107.95Subtotal: -
On Sale
JT SPROCKETS Rear Sprocket - 47-Tooth - Honda JTR210.47SC
JT SPROCKETS
MSRP: $29.55Now: $26.30Was: $29.55A properly sized rear sprocket is critical for optimizing your Honda's power delivery and acceleration characteristics. The JT 47-tooth rear sprocket combines precision engineering with weight...12102434- SKU:
- 12102434
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 47
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
MSRP: $29.55Now: $26.30Was: $29.55 -
On Sale
JT SPROCKETS Rear Sprocket - 52-Tooth - Honda JTR210.52SC
JT SPROCKETS
MSRP: $32.98Now: $29.35Was: $32.98A quality rear sprocket is fundamental to your drivetrain's efficiency and longevity. The JT Sprockets 52-Tooth rear sprocket delivers reliable power transmission with minimal rotating mass, directly...12102439- SKU:
- 12102439
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 52
- UNITS:
- EACH
MSRP: $32.98Now: $29.35Was: $32.98 -
On Sale
JT SPROCKETS Rear Sprocket - 53-Tooth - Honda JTR210.53SC
JT SPROCKETS
MSRP: $32.98Now: $29.35Was: $32.98A properly matched rear sprocket is critical to your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 53-tooth rear sprocket delivers the precision engineering...12102440- SKU:
- 12102440
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 53
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
MSRP: $32.98Now: $29.35Was: $32.98 -
On Sale
JT SPROCKETS Rear Sprocket - 48-Tooth - Yamaha JTR251.48SC
JT SPROCKETS
MSRP: $29.55Now: $26.30Was: $29.55The right rear sprocket is critical to your bike's acceleration, top-end speed, and chain longevity. JT's 48-tooth rear sprocket delivers the precision engineering and material quality that separates...12102441- SKU:
- 12102441
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- UNITS:
- EACH
- MATERIAL:
- STEEL
MSRP: $29.55Now: $26.30Was: $29.55 -
On Sale
JT SPROCKETS Sprocket - Rear - KTM - 50-Tooth JTR894.50
JT SPROCKETS
MSRP: $20.78Now: $18.49Was: $20.78A rear sprocket is critical to your KTM's acceleration, top-end performance, and overall drivetrain efficiency. The JT Sprockets 50-tooth rear sprocket delivers computer-optimized strength-to-weight...12100662- SKU:
- 12100662
- Availability:
- Ships Same Business Day
- Weight:
- 1.51 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
MSRP: $20.78Now: $18.49Was: $20.78 -
On Sale
JT SPROCKETS Sprocket - Rear - KTM - 49-Tooth JTR895.49
JT SPROCKETS
MSRP: $23.63Now: $21.03Was: $23.63A lightweight rear sprocket is one of the quickest ways to reduce unsprung rotating mass and sharpen your bike's acceleration and handling response. The JT Sprockets 49-tooth rear sprocket delivers...12100664- SKU:
- 12100664
- Availability:
- Ships Same Business Day
- Weight:
- 1.62 LBS
- CHAIN SIZE:
- 428
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
MSRP: $23.63Now: $21.03Was: $23.63 -
On Sale
JT SPROCKETS Sprocket - Rear - KTM - 45-Tooth JTR899.45
JT SPROCKETS
MSRP: $38.38Now: $34.16Was: $38.38A worn or mismatched rear sprocket directly impacts your engine's power delivery, acceleration, and overall driveability. The JT Sprockets 45-tooth rear sprocket for KTM delivers the precision...12100668- SKU:
- 12100668
- Availability:
- Ships Same Business Day
- Weight:
- 1.71 LBS
- MATERIAL:
- STEEL
- UNITS:
- EACH
- CHAIN SIZE:
- 525
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
MSRP: $38.38Now: $34.16Was: $38.38Qty in Cart: 0Quantity:Price:MSRP: $38.38Now: $34.16Was: $38.38Subtotal: -
On Sale
JT SPROCKETS Sprocket - Rear - Honda - 40-Tooth JTR284.40
JT SPROCKETS
MSRP: $37.33Now: $33.22Was: $37.33A worn or damaged rear sprocket directly impacts your power delivery, throttle response, and overall drivetrain efficiency. The JT Sprockets 40-tooth rear sprocket is engineered for maximum...JTR28440- SKU:
- JTR28440
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 40
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
MSRP: $37.33Now: $33.22Was: $37.33Qty in Cart: 0Quantity:Price:MSRP: $37.33Now: $33.22Was: $37.33Subtotal: -
On Sale
JT SPROCKETS Sprocket - Rear - Kawasaki/Suzuki - 47-Tooth JTR1465.47
JT SPROCKETS
MSRP: $20.38Now: $18.14Was: $20.38A worn or incorrect rear sprocket directly impacts acceleration, top-end performance, and chain wear across your Kawasaki or Suzuki. This 47-tooth JT sprocket delivers the strength and precision...JTR146547- SKU:
- JTR146547
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 47
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $20.38Now: $18.14Was: $20.38 -
On Sale
JT SPROCKETS Rear Sprocket - Honda - Black - 52 Tooth JTA210.52BLK
JT SPROCKETS
MSRP: $42.53Now: $37.85Was: $42.53A worn or undersized rear sprocket directly impacts acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 52-tooth rear sprocket delivers the strength-to-weight ratio...12112645- SKU:
- 12112645
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 52
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $42.53Now: $37.85Was: $42.53 -
On Sale
JT SPROCKETS Rear Sprocket - Honda - Black - 53 Tooth JTA210.53BLK
JT SPROCKETS
MSRP: $44.03Now: $39.19Was: $44.03A worn or inadequate rear sprocket directly impacts your Honda's acceleration, top speed, and overall drivetrain efficiency. The JT Sprockets 53-tooth rear sprocket replaces OEM components with a...12112646- SKU:
- 12112646
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- BLACK
- TOOTH COUNT:
- 53
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
MSRP: $44.03Now: $39.19Was: $44.03 -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth JTF249.14
JT SPROCKETS
MSRP: $6.53Now: $5.81Was: $6.53A countershaft sprocket is critical to your bike's acceleration response and overall drivetrain efficiency. The JT Sprockets 14-tooth design delivers the strength-to-weight ratio you need for...12120224- SKU:
- 12120224
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 14
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
MSRP: $6.53Now: $5.81Was: $6.53 -
On Sale
JT SPROCKETS Sprocket - Rear - Kawasaki/Suzuki - 37-Tooth JTR801.37
JT SPROCKETS
MSRP: $13.25Now: $11.79Was: $13.25A worn or mismatched rear sprocket directly impacts your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 37-tooth rear sprocket delivers the precise gear ratio...JTR80137- SKU:
- JTR80137
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 37
- CHAIN SIZE:
- 420
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $13.25Now: $11.79Was: $13.25 -
On Sale
JT SPROCKETS Counter Shaft Sprocket - 13-Tooth JTF284.13SC
JT SPROCKETS
MSRP: $16.80Now: $14.95Was: $16.80A quality counter shaft sprocket directly impacts your bike's acceleration response and overall drivetrain reliability. The JT Sprockets 13-tooth design delivers precise gear ratios for aggressive...12120515- SKU:
- 12120515
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- COLOR/FINISH:
- NATURAL
- MODEL:
- HONDA
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 13
- UNITS:
- EACH
MSRP: $16.80Now: $14.95Was: $16.80 -
On Sale
JT SPROCKETS Rear Sprocket - 48-Tooth - Beta/Honda JTR210.48SC
JT SPROCKETS
MSRP: $29.55Now: $26.30Was: $29.55A properly sized rear sprocket is critical for optimizing your bike's acceleration, top-end speed, and overall powerband delivery. The JT Sprockets 48-tooth rear sprocket is engineered with precision...12102435- SKU:
- 12102435
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
MSRP: $29.55Now: $26.30Was: $29.55 -
On Sale
EBC Clutch Kit CK3340
EBC
MSRP: $41.38Now: $39.31Was: $41.38If your clutch is slipping under load or showing signs of glazing, the EBC Clutch Kit CK3340 delivers the friction and heat resistance you need to restore positive engagement and extend service life...CK3340- SKU:
- CK3340
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MODEL:
- CK SERIES
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FRICTION PLATE SET
- UNITS:
- SET
MSRP: $41.38Now: $39.31Was: $41.38Qty in Cart: 0Quantity:Price:MSRP: $41.38Now: $39.31Was: $41.38Subtotal: -
UFO Chain Slider - Honda CRF250X - Red HO03671-070
UFO
$24.95Chain wear is one of the most common sources of swingarm damage on the CRF250X, and replacing a damaged swingarm is significantly more expensive than protecting it upfront. The UFO Chain Slider is a...12310400- SKU:
- 12310400
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- CHAIN SLIDER
- UNITS:
- EACH
- MATERIAL:
- PLASTIC
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- RED
- TYPE:
- SWINGARM
$24.95 -
UFO Chain Slider - KTM 125-525 SX/SXF SX 250 - Black KT04029-001
UFO
$24.95Chain slap and swingarm contact are inevitable on high-revving 2-strokes and demanding terrain—but premature wear to your swingarm doesn't have to be. The UFO Chain Slider shields the most vulnerable...12310410- SKU:
- 12310410
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- COLOR/FINISH:
- BLACK
- TYPE:
- SWINGARM
- UNITS:
- EACH
- PRODUCT NAME:
- CHAIN SLIDER
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- PLASTIC
$24.95 -
UFO Chain Slider - Yamaha WR250F/450F YZ250F/450F - Blue YA03876-089
UFO
$24.95Chain slap and wear against your swingarm is inevitable—until you install proper protection. The UFO Chain Slider shields your swingarm from abrasive chain contact, extending component life and...12310411- SKU:
- 12310411
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- COLOR/FINISH:
- BLUE
- MATERIAL:
- PLASTIC
- TYPE:
- SWINGARM
- PRODUCT NAME:
- CHAIN SLIDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$24.95
