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 Rear Sprocket - Blue - Yamaha - 50-Tooth RAL-245-50 BLU
SUPERSPROX
$69.95A rear sprocket is one of the highest-wear components on your Yamaha, and chain slippage or premature wear will kill your performance on the track. The SUPERSPROX RAL-245-50 delivers the...12111934- SKU:
- 12111934
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MODEL:
- ALUMINUM
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Yamaha - 50-Tooth RAL-245-50 BLK
SUPERSPROX
$69.95A worn or undersized rear sprocket robs your Yamaha of acceleration and top-end performance. The SUPERSPROX 50-tooth rear sprocket delivers the lightweight strength you need to maximize power...12111938- SKU:
- 12111938
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MODEL:
- ALUMINUM
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$69.95 -
SUPERSPROX Rear Sprocket - Black - Kawasaki - 46-Tooth RAL-455-46-BLK
SUPERSPROX
$64.95A lightweight rear sprocket directly impacts acceleration, top speed, and overall drivetrain efficiency on your Kawasaki. The SUPERSPROX 46-tooth design delivers the strength of premium materials...12111942- SKU:
- 12111942
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 46
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- BLACK
- MODEL:
- ALUMINUM
- UNITS:
- EACH
$64.95 -
SUPERSPROX Rear Sprocket - Black - Kawasaki - 38-Tooth RAL-801-38-BLK
SUPERSPROX
$54.95A lightweight rear sprocket directly impacts your acceleration, top-end speed, and overall power delivery—especially critical for competitive riders who demand responsiveness off the line. The...12111947- SKU:
- 12111947
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 420
- MODEL:
- ALUMINUM
- TOOTH COUNT:
- 38
- UNITS:
- EACH
$54.95 -
SUPERSPROX Rear Sprocket - Black - Yamaha - 35-Tooth RAL-834-35-BLK
SUPERSPROX
$54.95A lightweight rear sprocket directly impacts your acceleration, top-end speed, and overall drivetrain efficiency—especially critical if you're chasing lap times or pushing your bike to its limits...12111951- SKU:
- 12111951
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- CHAIN SIZE:
- 420
- TOOTH COUNT:
- 35
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BLACK
- MODEL:
- ALUMINUM
- RIDING STYLE:
- STREET
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
$54.95 -
SUPERSPROX Rear Sprocket - Black - Yamaha - 37-Tooth RAL-834-37-BLK
SUPERSPROX
$54.95A rear sprocket is one of the highest-wear components on your bike—poor quality means premature chain stretch, loss of power delivery, and costly replacements. The SUPERSPROX 37-tooth rear sprocket...12111952- SKU:
- 12111952
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 37
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- COLOR/FINISH:
- BLACK
- MODEL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$54.95 -
SUPERSPROX Rear Sprocket - Black - Yamaha - 40-Tooth RAL-853-40-BLK
SUPERSPROX
$69.95A lightweight rear sprocket directly impacts your power delivery, acceleration, and overall drivetrain efficiency—especially critical if you're optimizing your Yamaha's performance on the track or...12111953- SKU:
- 12111953
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 40
- UNITS:
- EACH
- MODEL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Orange - KTM/Husqvarna - 50-Tooth RAL-990-50-ORG
SUPERSPROX
$69.95A worn or stock sprocket directly impacts your power delivery, acceleration response, and chain longevity. The SUPERSPROX rear sprocket in 50-tooth delivers the lightweight durability you need to...12111956- SKU:
- 12111956
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- ORANGE
- MODEL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$69.95 -
SUPERSPROX Rear Sprocket - Orange - KTM/Husqvarna - 51-Tooth RAL-990-51-ORG
SUPERSPROX
$69.95A lightweight rear sprocket is critical to reducing unsprung weight and improving acceleration response on your KTM or Husqvarna. The SUPERSPROX 51-tooth sprocket delivers the strength of billet...12111957- SKU:
- 12111957
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ORANGE
- MODEL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$69.95 -
SUPERSPROX Steel Rear Sprocket - 50-Tooth RFE-457-50-BLK
SUPERSPROX
$44.95A rear sprocket is critical to your drivetrain's efficiency, acceleration, and overall durability. The SUPERSPROX 50-tooth steel sprocket delivers race-proven durability with precision engineering,...12101899- SKU:
- 12101899
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$44.95Qty in Cart: 0Quantity:Price:$44.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 49-Tooth RFE-460-49-BLK
SUPERSPROX
$54.95A steel rear sprocket needs to handle the demands of both track abuse and street riding without sacrificing longevity or performance. The SUPERSPROX 49-tooth RFE-460-49-BLK delivers the durability...12101903- SKU:
- 12101903
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$54.95Qty in Cart: 0Quantity:Price:$54.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 51-Tooth RFE-460-51-BLK
SUPERSPROX
$49.95A quality rear sprocket directly impacts your drivetrain's efficiency, durability, and acceleration response. The SUPERSPROX 51-tooth steel sprocket delivers race-proven performance with the...12101905- SKU:
- 12101905
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 43-Tooth RFE-487-43-BLK
SUPERSPROX
$49.95A rear sprocket is critical to your drivetrain's efficiency and longevity—it directly affects acceleration, top speed, and wear on your entire chain system. The SUPERSPROX 43-tooth rear sprocket...12101913- SKU:
- 12101913
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 43
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
$49.95 -
SUPERSPROX Steel Rear Sprocket - 41-Tooth RFE-808-41-BLK
SUPERSPROX
$49.95If you're running a chain drive system that demands reliability without sacrificing performance, sprocket wear directly impacts your power delivery and overall drivetrain longevity. The SUPERSPROX...12101918- SKU:
- 12101918
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 41
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
$49.95 -
SUPERSPROX Steel Rear Sprocket - 48-Tooth RFE-808-48-BLK
SUPERSPROX
$59.95A worn or inefficient rear sprocket directly impacts acceleration, fuel economy, and drivetrain longevity. The SUPERSPROX 48-Tooth Steel Rear Sprocket delivers race-proven durability with CNC-laser...12101921- SKU:
- 12101921
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 50-Tooth RFE-990-50-BLK
SUPERSPROX
$49.95A rear sprocket is critical to your drivetrain's efficiency, durability, and power delivery. The SUPERSPROX 50-tooth steel sprocket delivers race-proven reliability with a lightweight design that...12101942- SKU:
- 12101942
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- MOUNTING POSITION:
- REAR
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 51-Tooth RFE-990-51-BLK
SUPERSPROX
$49.95A rear sprocket is one of the highest-wear components in any drivetrain system, directly impacting acceleration, top speed, and chain longevity. The SUPERSPROX 51-tooth steel sprocket delivers...12101943- SKU:
- 12101943
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 52-Tooth RFE-990-52-BLK
SUPERSPROX
$49.95A quality rear sprocket is fundamental to your drivetrain's efficiency, acceleration response, and overall longevity. The SUPERSPROX Steel Rear Sprocket delivers race-proven durability with a...12101944- SKU:
- 12101944
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 42-Tooth - Gold - Honda RST-1350-42-GLD
SUPERSPROX
$109.95Rear sprocket wear is one of the fastest-wearing components on your motorcycle, directly impacting acceleration, fuel efficiency, and power delivery. The SUPERSPROX Stealth combines steel teeth that...12101951- SKU:
- 12101951
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- GOLD
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 42
- TYPE:
- REAR
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- MOUNTING POSITION:
- REAR
$109.95Qty in Cart: 0Quantity:Price:$109.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 49-Tooth - Red - Beta RST-1512-49-RED
SUPERSPROX
$119.95If you're running a high-displacement bike and tired of replacing sprockets every season, the SUPERSPROX Stealth delivers the durability you need without the weight penalty. Steel teeth engineered to...12101953- SKU:
- 12101953
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal:
