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 Stealth Rear Sprocket - 50-Tooth - Orange - Husaberg RST-990-50-ORG
SUPERSPROX
$119.95If you're running a high-displacement bike and tired of replacing sprockets every season, the SUPERSPROX Stealth rear sprocket delivers the durability you need without the weight penalty. Steel teeth outlast aluminum by 4x, while the forged aluminum core...12102064- SKU:
- 12102064
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- STEALTH
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 51-Tooth - Orange - Husaberg RST-990-51-ORG
SUPERSPROX
$119.95If you're running a high-displacement bike and tired of replacing sprockets every season, the SUPERSPROX Stealth solves that problem. By combining hardened steel teeth with a lightweight aluminum core, you get four times the longevity of aluminum-only...12102065- SKU:
- 12102065
- Availability:
- Ships Same Business Day
- Weight:
- 2.01 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 50-Tooth - Blue - Husaberg RST-990-50-BLU
SUPERSPROX
$119.95The SUPERSPROX Stealth Rear Sprocket delivers the durability of steel teeth with the lightweight advantage of an aluminum core—giving you longer intervals between replacements without the weight penalty. If you're running a high-displacement bike and...12102069- SKU:
- 12102069
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Honda - 46-Tooth RAL-1204-46-BLK
SUPERSPROX
$64.95A lightweight rear sprocket is fundamental to reducing rotating mass and improving your bike's acceleration and overall responsiveness. The SUPERSPROX 46-tooth sprocket delivers the strength of premium billet construction without the weight penalty,...12111919- SKU:
- 12111919
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- CHAIN SIZE:
- 428
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
- MODEL:
- ALUMINUM
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
SUPERSPROX Rear Sprocket - Red - Honda - 48-Tooth RAL21048RED
SUPERSPROX
$69.95A quality rear sprocket is fundamental to reliable power delivery and chain longevity. The SUPERSPROX 48-Tooth Red Sprocket delivers the strength-to-weight ratio you need for consistent performance, whether you're pushing hard on the track or maintaining...12111923- SKU:
- 12111923
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- MODEL:
- ALUMINUM
- RIDING STYLE:
- STREET
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- UNITS:
- EACH
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Red - Honda - 49-Tooth RAL21049RED
SUPERSPROX
$69.95If you're running a Honda and want to shed unnecessary weight without compromising durability, the SUPERSPROX 49-Tooth Rear Sprocket delivers exactly that. Built from 7075-T6 aluminum and CNC-machined to precision tolerances, this sprocket combines...12111924- SKU:
- 12111924
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- MODEL:
- ALUMINUM
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$69.95 -
SUPERSPROX Rear Sprocket - Black - Honda - 52-Tooth RAL21052BLK
SUPERSPROX
$74.95A lightweight rear sprocket directly impacts your bike's acceleration, top-end speed, and overall power delivery. The SUPERSPROX 52-tooth sprocket combines premium 7075-T6 aluminum with precision CNC machining to deliver the strength-to-weight ratio...12111930- SKU:
- 12111930
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MODEL:
- ALUMINUM
- TOOTH COUNT:
- 52
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
$74.95Qty in Cart: 0Quantity:Price:$74.95Subtotal: -
SUPERSPROX Rear Sprocket - Blue - Yamaha - 48-Tooth RAL-245-48 BLU
SUPERSPROX
$69.95A lightweight rear sprocket directly impacts your acceleration, throttle response, and overall drivetrain efficiency—especially critical if you're running a high-revving engine or racing application. The SUPERSPROX 48-tooth sprocket eliminates...12111932- SKU:
- 12111932
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- MODEL:
- ALUMINUM
- COLOR/FINISH:
- BLUE
$69.95 -
SUPERSPROX Rear Sprocket - Blue - Yamaha - 49-Tooth RAL-245-49 BLU
SUPERSPROX
$69.95A lightweight rear sprocket is one of the highest-impact upgrades you can make to your Yamaha's acceleration and overall responsiveness. The SUPERSPROX RAL-245-49 cuts rotational mass without sacrificing durability, translating to quicker throttle...12111933- SKU:
- 12111933
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- CHAIN SIZE:
- 520
- MODEL:
- ALUMINUM
- RIDING STYLE:
- STREET
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Husqvarna/KTM - 46-Tooth RAL-4-46 BLK
SUPERSPROX
$64.95A worn or suboptimal sprocket directly impacts your power delivery, throttle response, and drivetrain efficiency—especially on high-demand two-stroke and four-stroke platforms. The SUPERSPROX 46-tooth rear sprocket replaces weak OEM components with...12111940- SKU:
- 12111940
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- CHAIN SIZE:
- 420
- MODEL:
- ALUMINUM
- UNITS:
- EACH
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Kawasaki - 50-Tooth RAL-457-50-BLK
SUPERSPROX
$64.95A worn or stock sprocket will rob your Kawasaki of responsiveness and chain longevity. The SUPERSPROX Rear Sprocket delivers the lightweight strength you need to maximize acceleration and reduce drivetrain wear—all while keeping your bike's performance...12111943- SKU:
- 12111943
- Availability:
- Ships Same Business Day
- Weight:
- 0.89 LBS
- CHAIN SIZE:
- 420
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- MODEL:
- ALUMINUM
- COLOR/FINISH:
- BLACK
$64.95 -
SUPERSPROX Rear Sprocket - Black - Kawasaki - 49-Tooth RAL-460-49-BLK
SUPERSPROX
$69.95A rear sprocket is one of the highest-wear components in your drivetrain, and cheap materials mean premature tooth failure and chain degradation. The SUPERSPROX 49-Tooth Rear Sprocket eliminates that risk by combining 7075-T6 aluminum with precision CNC...12111944- SKU:
- 12111944
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- MODEL:
- ALUMINUM
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$69.95 -
SUPERSPROX Rear Sprocket - Orange - KTM/Husqvarna - 52-Tooth RAL-990-52-ORG
SUPERSPROX
$74.95A lightweight rear sprocket is fundamental to reducing unsprung mass and improving your bike's throttle response, acceleration, and overall handling characteristics. The SUPERSPROX 52-tooth design delivers measurable performance gains while the...12111958- SKU:
- 12111958
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- COLOR/FINISH:
- ORANGE
- MODEL:
- ALUMINUM
- UNITS:
- EACH
$74.95Qty in Cart: 0Quantity:Price:$74.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 39-Tooth RFE-451-39-BLK
SUPERSPROX
$54.95A quality rear sprocket is fundamental to your drivetrain's efficiency and longevity. The SUPERSPROX 39-tooth steel sprocket delivers race-proven durability with a lightweight construction that doesn't compromise on strength, making it ideal for riders...12101898- SKU:
- 12101898
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 39
- CHAIN SIZE:
- 415
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
$54.95 -
SUPERSPROX Steel Rear Sprocket - 49-Tooth RFE-808-49-BLK
SUPERSPROX
$59.95A worn or mismatched sprocket directly impacts chain efficiency, acceleration, and drivetrain longevity. The SUPERSPROX 49-Tooth Steel Rear Sprocket delivers race-proven durability with a precision-engineered design that maximizes power transfer while...12101922- SKU:
- 12101922
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 48-Tooth - Red - Beta RST-1512-48-RED
SUPERSPROX
$119.95If you're running a high-displacement bike and want sprocket durability that won't add rotational mass, the SUPERSPROX Stealth delivers steel-tooth longevity with an aluminum core that keeps your bike responsive. You'll get 4x the tooth life of aluminum...12101952- SKU:
- 12101952
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- COLOR/FINISH:
- RED
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- COLOR/FINISH:
- STEALTH
- PRODUCT NAME:
- SPROCKET
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 50-Tooth - Gold - Beta RST-1512-50-GLD
SUPERSPROX
$119.95If you're running a high-displacement bike and want sprocket longevity without the weight penalty, the SUPERSPROX Stealth delivers steel-tooth durability in a lightweight package. The steel teeth resist wear four times longer than aluminum alternatives,...12101955- SKU:
- 12101955
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- COLOR/FINISH:
- STEALTH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- COLOR/FINISH:
- GOLD
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$119.95 -
SUPERSPROX Stealth Rear Sprocket - 50-Tooth - Gold - Yamaha RST-245-50-GLD
SUPERSPROX
$119.95If you're running a high-displacement Yamaha and want sprocket longevity without the weight penalty, the SUPERSPROX Stealth delivers. Steel teeth engineered to outlast aluminum by 4x means fewer replacements and more time on track. The hybrid aluminum...12101982- SKU:
- 12101982
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GOLD
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- COLOR/FINISH:
- STEALTH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 46-Tooth - Gold - Kawasaki RST-460-46-GLD
SUPERSPROX
$119.95If you're running a high-displacement Kawasaki and want sprocket longevity without the weight penalty, the SUPERSPROX Stealth delivers a compelling engineering solution. Steel teeth dramatically extend service life compared to aluminum alternatives,...12101995- SKU:
- 12101995
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- TOOTH COUNT:
- 46
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- GOLD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
$119.95 -
SUPERSPROX Stealth Rear Sprocket - 47-Tooth - Gold - Kawasaki RST-460-47-GLD
SUPERSPROX
$119.95If you're running a high-displacement bike and tired of replacing sprockets every season, the SUPERSPROX Stealth rear sprocket delivers the durability of steel with the weight savings of aluminum. The forged steel teeth outlast aluminum by 4x, while the...12101996- SKU:
- 12101996
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- COLOR/FINISH:
- GOLD
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 47
$119.95
