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
-
SUPERSPROX Edge Rear Sprocket - Black - 47-Tooth RFA82947BLK
SUPERSPROX
$54.95If you're running mid-range performance builds or looking to trim rotating mass without breaking the bank, the SUPERSPROX Edge 47-Tooth Rear Sprocket delivers measurable weight savings that translate...12102396- SKU:
- 12102396
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- COLOR/FINISH:
- ZINC
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- MODEL:
- EDGE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- LIGHTWEIGHT
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
$54.95Qty in Cart: 0Quantity:Price:$54.95Subtotal: -
SUPERSPROX Edge Rear Sprocket - Black - 38-Tooth RFA846238BLK
SUPERSPROX
$49.95If you're running a mid-range bike and looking to shed unsprung weight without breaking the bank, the SUPERSPROX Edge Rear Sprocket delivers measurable gains in acceleration and handling response. By...12102397- SKU:
- 12102397
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- UNITS:
- EACH
- MODEL:
- EDGE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- STYLE:
- LIGHTWEIGHT
- TOOTH COUNT:
- 38
- COLOR/FINISH:
- ZINC
- MATERIAL:
- STEEL
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
SUPERSPROX Edge Rear Sprocket - Black - 44-Tooth RFA90544BLK
SUPERSPROX
$49.95A lightweight rear sprocket is one of the most cost-effective upgrades for improving acceleration and reducing unsprung weight on mid-range bikes. The SUPERSPROX Edge reduces rotational mass by...12102399- SKU:
- 12102399
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MODEL:
- EDGE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 44
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- ZINC
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- LIGHTWEIGHT
$49.95 -
SUPERSPROX Countershaft Sprocket - 13-Tooth CST-1590-13-1
SUPERSPROX
$24.95Countershaft sprocket failures cost you races and rebuild time. The SUPERSPROX 13-tooth countershaft sprocket eliminates that risk with factory-grade engineering designed for professional racing...12121343- SKU:
- 12121343
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
$24.95 -
SUPERSPROX Countershaft Sprocket - 17-Tooth CST-1902-17-1
SUPERSPROX
$24.95Countershaft sprockets are the foundation of reliable power transfer in high-RPM applications—a weak link here means lost performance and costly downtime. The SUPERSPROX CST-1902-17-1 is engineered...12121350- SKU:
- 12121350
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 17
- TYPE:
- COUNTERSHAFT
$24.95 -
SUPERSPROX Countershaft Sprocket - 13-Tooth CST-250-13-1
SUPERSPROX
$24.95A countershaft sprocket is your direct connection between engine power and wheel acceleration—choose inferior materials and you're gambling with reliability under load. The SUPERSPROX CST-250-13-1...12121352- SKU:
- 12121352
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 13
$24.95 -
SUPERSPROX Countershaft Sprocket - 13-Tooth CST-284-13-1
SUPERSPROX
$24.95A worn or undersized countershaft sprocket kills acceleration and forces your chain to work harder than it should, draining power before it reaches the rear wheel. The SUPERSPROX 13-Tooth...12121356- SKU:
- 12121356
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
$24.95 -
SUPERSPROX Countershaft Sprocket - 13-Tooth CST-565-13-1
SUPERSPROX
$24.95A countershaft sprocket is your direct connection to reliable power delivery, and this SUPERSPROX 13-tooth unit delivers the durability and precision that factory racing teams demand. Built from...12121388- SKU:
- 12121388
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- TOOTH COUNT:
- 13
- UNITS:
- EACH
$24.95Qty in Cart: 0Quantity:Price:$24.95Subtotal: -
SUPERSPROX Countershaft Sprocket - 14-Tooth CST-565-14-1
SUPERSPROX
$24.95A worn or inadequate countershaft sprocket will rob your engine of power before it ever reaches the chain—and on high-revving applications, chain slap and premature wear become expensive problems...12121389- SKU:
- 12121389
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- CHAIN SIZE:
- 520
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- TYPE:
- COUNTERSHAFT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
$24.95 -
SUPERSPROX Countershaft Sprocket - 15-Tooth CST-565-15-1
SUPERSPROX
$24.95Chain drag and power loss plague riders pushing their machines to the limit—especially on technical terrain where every watt counts. The SUPERSPROX Countershaft Sprocket delivers factory-spec...12121390- SKU:
- 12121390
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- TOOTH COUNT:
- 15
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
$24.95 -
SUPERSPROX Countershaft Sprocket - 13-Tooth CST-569-13-1
SUPERSPROX
$24.95A countershaft sprocket is the direct link between your engine's power and your chain drive—so it needs to survive extreme loads without flex or wear. The SUPERSPROX 13-tooth countershaft sprocket...12121391- SKU:
- 12121391
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- STEEL
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
$24.95Qty in Cart: 0Quantity:Price:$24.95Subtotal: -
SUPERSPROX Countershaft Sprocket - 14-Tooth CST-569-14-1
SUPERSPROX
$24.95A countershaft sprocket is your direct link to reliable power delivery—and a weak one costs you lap time and durability. The SUPERSPROX 14-tooth countershaft sprocket delivers the precision...12121392- SKU:
- 12121392
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- TOOTH COUNT:
- 14
- CHAIN SIZE:
- 520
- MATERIAL:
- STEEL
- UNITS:
- EACH
$24.95Qty in Cart: 0Quantity:Price:$24.95Subtotal: -
SUPERSPROX Countershaft Sprocket - 15-Tooth CST-569-15-1
SUPERSPROX
$24.95A countershaft sprocket that fails mid-race costs you more than money—it costs you position. The SUPERSPROX CST-569-15-1 is engineered with SCM-435 carbon-free steel and an ultra-hard surface layer...12121393- SKU:
- 12121393
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 15
$24.95Qty in Cart: 0Quantity:Price:$24.95Subtotal: -
SUPERSPROX Countershaft Sprocket - 14-Tooth CST-250-14-1
SUPERSPROX
$24.95A countershaft sprocket is your direct mechanical link to engine power—wear it down with inferior steel, and you're losing efficiency with every shift. The SUPERSPROX 14-Tooth CST-250-14-1 uses...12121425- SKU:
- 12121425
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TOOTH COUNT:
- 14
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
$24.95 -
SUPERSPROX Countershaft Sprocket - 13-Tooth CST-430-13-1
SUPERSPROX
$24.95A countershaft sprocket failure mid-race costs you time and money—this SUPERSPROX 13-tooth sprocket eliminates that risk with SCM-435 carbon-free steel engineered for zero breaking. The ultra-hard...12121427- SKU:
- 12121427
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
$24.95Qty in Cart: 0Quantity:Price:$24.95Subtotal: -
SUPERSPROX Countershaft Sprocket - 14-Tooth CST-824-14-1
SUPERSPROX
$24.95If you're pushing your machine hard on dirt or asphalt, sprocket failure isn't just an inconvenience—it's a DNF. The SUPERSPROX Countershaft Sprocket delivers factory team-grade durability and...12121405- SKU:
- 12121405
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- CHAIN SIZE:
- 520
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
$24.95 -
SUPERSPROX Countershaft Sprocket - 13-Tooth CST-827-13-1
SUPERSPROX
$34.95A countershaft sprocket is only as good as its ability to handle sustained power transfer without degradation. The SUPERSPROX CST-827-13-1 is engineered with SCM-435 carbon-free steel and an...12121406- SKU:
- 12121406
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
$34.95Qty in Cart: 0Quantity:Price:$34.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 44-Tooth RFE-808-44-BLK
SUPERSPROX
$49.95A rear sprocket is fundamental to your drivetrain's efficiency and longevity. The SUPERSPROX 44-tooth steel sprocket delivers race-proven durability with measurable gains in chain wear reduction and...12101919- SKU:
- 12101919
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 44
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 47-Tooth RFE-808-47-BLK
SUPERSPROX
$49.95A quality rear sprocket directly impacts your chain drive efficiency, acceleration response, and overall drivetrain longevity. The SUPERSPROX 47-Tooth Steel Rear Sprocket delivers race-proven...12101920- SKU:
- 12101920
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$49.95 -
SUPERSPROX Steel Rear Sprocket - 50-Tooth RFE-808-50-BLK
SUPERSPROX
$49.95A rear sprocket directly impacts your power delivery, acceleration, and overall drivetrain efficiency—making it one of the most critical components you can upgrade. The SUPERSPROX Steel Rear Sprocket...12101923- SKU:
- 12101923
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
$49.95
