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
-
On Sale
SUPERSPROX Countershaft Sprocket - 14-Tooth CST-1441-14-1
SUPERSPROX
MSRP: $24.95Now: $21.21Was: $24.95If you're running a countershaft sprocket that can't handle the demands of high-RPM acceleration or off-road terrain, you're leaving performance on the table—and risking catastrophic failure. The SUPERSPROX 14-Tooth Countershaft Sprocket delivers...12121329- SKU:
- 12121329
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- NATURAL
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
MSRP: $24.95Now: $21.21Was: $24.95 -
On Sale
SUPERSPROX Steel Rear Sprocket - 42-Tooth RFE-990-42-BLK
SUPERSPROX
MSRP: $49.95Now: $42.46Was: $49.95A worn or undersized rear sprocket directly impacts acceleration, top-end performance, and drivetrain stress—especially in racing and aggressive riding applications. The SUPERSPROX 42-Tooth Steel Rear Sprocket delivers race-proven durability with a...12101938- SKU:
- 12101938
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 42
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
MSRP: $49.95Now: $42.46Was: $49.95 -
On Sale
SUPERSPROX Steel Rear Sprocket - 45-Tooth RFE-990-45-BLK
SUPERSPROX
MSRP: $49.95Now: $42.46Was: $49.95A worn or inefficient rear sprocket directly impacts your bike's acceleration, chain longevity, and overall drivetrain reliability. The SUPERSPROX Steel Rear Sprocket delivers race-proven durability with a lightweight design that won't compromise...12101939- SKU:
- 12101939
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 45
- TYPE:
- REAR
- UNITS:
- EACH
MSRP: $49.95Now: $42.46Was: $49.95 -
On Sale
SUPERSPROX Stealth Rear Sprocket - 53-Tooth - Gold - Kawasaki RST-460-53-GLD
SUPERSPROX
MSRP: $119.95Now: $101.96Was: $119.95Sprocket wear is one of the fastest-draining costs in high-performance riding, especially on track bikes where power demands accelerate degradation. The SUPERSPROX Stealth rear sprocket solves this with steel teeth that outlast aluminum by 4x, giving you...12102001- SKU:
- 12102001
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- COLOR/FINISH:
- STEALTH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 53
- UNITS:
- EACH
- COLOR/FINISH:
- GOLD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
MSRP: $119.95Now: $101.96Was: $119.95Qty in Cart: 0Quantity:Price:MSRP: $119.95Now: $101.96Was: $119.95Subtotal: -
On Sale
SUPERSPROX Steel Rear Sprocket - 56-Tooth RFE-209-56-BLK
SUPERSPROX
MSRP: $39.95Now: $33.96Was: $39.95A worn or undersized rear sprocket limits acceleration and forces your engine to work harder, bleeding power and reducing chain life. The SUPERSPROX 56-Tooth Steel Rear Sprocket delivers race-tested durability with a lightweight design that maintains...12101884- SKU:
- 12101884
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- TOOTH COUNT:
- 56
- TYPE:
- REAR
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
MSRP: $39.95Now: $33.96Was: $39.95 -
On Sale
SUPERSPROX Steel Rear Sprocket - 49-Tooth RFE-210-49-BLK
SUPERSPROX
MSRP: $49.95Now: $42.46Was: $49.95A worn or mismatched rear sprocket directly impacts your bike's acceleration, top-end performance, and drivetrain longevity. The SUPERSPROX 49-Tooth Steel Rear Sprocket delivers race-proven durability with measurable gains in chain life and power...12101886- SKU:
- 12101886
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 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:
- 49
- MOUNTING POSITION:
- REAR
MSRP: $49.95Now: $42.46Was: $49.95 -
On Sale
SUPERSPROX Steel Rear Sprocket - 50-Tooth RFE-210-50-BLK
SUPERSPROX
MSRP: $49.95Now: $42.46Was: $49.95A rear sprocket is critical to your drivetrain's efficiency and longevity. The SUPERSPROX 50-tooth steel sprocket delivers race-proven durability without the weight penalty of inferior alternatives, making it ideal whether you're hammering a track or...12101887- SKU:
- 12101887
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $49.95Now: $42.46Was: $49.95 -
On Sale
SUPERSPROX Steel Rear Sprocket - 51-Tooth RFE-210-51-BLK
SUPERSPROX
MSRP: $49.95Now: $42.46Was: $49.95A worn or mismatched rear sprocket directly impacts your bike's acceleration, top-end power delivery, and chain longevity. The SUPERSPROX 51-Tooth Steel Rear Sprocket combines race-proven durability with a lightweight design, giving you the responsive...12101888- SKU:
- 12101888
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 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:
- 51
MSRP: $49.95Now: $42.46Was: $49.95 -
On Sale
SUPERSPROX Stealth Rear Sprocket - 48-Tooth - Gold - Honda RST-210-48-GLD
SUPERSPROX
MSRP: $119.95Now: $101.96Was: $119.95If you're running a high-displacement Honda and tired of replacing worn sprockets every season, the SUPERSPROX Stealth delivers the durability of steel with the lightweight advantage of aluminum. This hybrid design uses hardened steel teeth that resist...12101969- SKU:
- 12101969
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- GOLD
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- REAR
- UNITS:
- EACH
MSRP: $119.95Now: $101.96Was: $119.95 -
On Sale
SUPERSPROX Stealth Rear Sprocket - 49-Tooth - Gold - Honda RST-210-49-GLD
SUPERSPROX
MSRP: $119.95Now: $101.96Was: $119.95If you're running a high-displacement Honda and want a sprocket that won't become your next maintenance headache, the SUPERSPROX Stealth delivers the durability of steel teeth with a weight penalty that won't slow you down. The hybrid steel-and-aluminum...12101970- SKU:
- 12101970
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- COLOR/FINISH:
- GOLD
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
MSRP: $119.95Now: $101.96Was: $119.95Qty in Cart: 0Quantity:Price:MSRP: $119.95Now: $101.96Was: $119.95Subtotal: -
On Sale
SUPERSPROX Stealth Rear Sprocket - 51-Tooth - Gold - Honda RST-210-51-GLD
SUPERSPROX
MSRP: $119.95Now: $101.96Was: $119.95If you're pushing your Honda to the limit, sprocket wear becomes your limiting factor—and aluminum simply won't cut it for serious track or street use. The SUPERSPROX Stealth rear sprocket combines a lightweight aluminum core with hardened steel teeth...12101972- SKU:
- 12101972
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 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:
- 51
MSRP: $119.95Now: $101.96Was: $119.95 -
On Sale
SUPERSPROX Stealth Rear Sprocket - 48-Tooth - Red - Honda RST-210-48-RED
SUPERSPROX
MSRP: $109.95Now: $93.46Was: $109.95If you're running a high-revving Honda or comparable 1400cc platform, rear sprocket wear directly impacts power delivery and fuel efficiency. The SUPERSPROX Stealth combines a steel-tooth design with a lightweight aluminum core to give you four times the...12101974- SKU:
- 12101974
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
MSRP: $109.95Now: $93.46Was: $109.95Qty in Cart: 0Quantity:Price:MSRP: $109.95Now: $93.46Was: $109.95Subtotal: -
On Sale
SUPERSPROX Stealth Rear Sprocket - 52-Tooth - Red - Honda RST-210-52-RED
SUPERSPROX
MSRP: $109.95Now: $93.46Was: $109.95If you're running hard on the track or pushing your Honda to its limits on the street, sprocket wear directly impacts your power delivery and acceleration feel. The SUPERSPROX Stealth Rear Sprocket gives you steel teeth that outlast aluminum by 4x,...12101978- SKU:
- 12101978
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
MSRP: $109.95Now: $93.46Was: $109.95 -
On Sale
SUPERSPROX Stealth Rear Sprocket - 49-Tooth - Gold - Yamaha RST-245-49-GLD
SUPERSPROX
MSRP: $119.95Now: $101.96Was: $119.95If you're pushing your Yamaha hard on the track or street, sprocket wear is one of the most overlooked maintenance items that directly impacts acceleration, top-end performance, and reliability. The SUPERSPROX Stealth solves this problem with steel teeth...12101981- SKU:
- 12101981
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- COLOR/FINISH:
- STEALTH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- GOLD
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $119.95Now: $101.96Was: $119.95 -
On Sale
SUPERSPROX Stealth Rear Sprocket - 43-Tooth - Gold - Kawasaki RST-487-43-GLD
SUPERSPROX
MSRP: $109.95Now: $93.46Was: $109.95If you're running a high-displacement sportbike or cruiser, sprocket wear is a constant maintenance headache that impacts both acceleration response and drivetrain longevity. The SUPERSPROX Stealth rear sprocket eliminates this problem by pairing steel...12102017- SKU:
- 12102017
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- STREET
- TYPE:
- REAR
- COLOR/FINISH:
- GOLD
- TOOTH COUNT:
- 43
- UNITS:
- EACH
MSRP: $109.95Now: $93.46Was: $109.95Qty in Cart: 0Quantity:Price:MSRP: $109.95Now: $93.46Was: $109.95Subtotal: -
On Sale
SUPERSPROX Stealth Rear Sprocket - 44-Tooth - Gold - Kawasaki RST-487-44-GLD
SUPERSPROX
MSRP: $119.95Now: $101.96Was: $119.95If you're running a high-displacement sportbike or cruiser, rear sprocket durability directly impacts your power delivery and maintenance intervals. The SUPERSPROX Stealth combines a forged steel tooth design with a lightweight aluminum core, giving you...12102018- SKU:
- 12102018
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- COLOR/FINISH:
- GOLD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- REAR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 44
MSRP: $119.95Now: $101.96Was: $119.95Qty in Cart: 0Quantity:Price:MSRP: $119.95Now: $101.96Was: $119.95Subtotal: -
On Sale
SUPERSPROX Rear Sprocket - Black - Yamaha - 49-Tooth RAL-245-49 BLK
SUPERSPROX
MSRP: $69.95Now: $59.46Was: $69.95A lightweight rear sprocket is fundamental to reducing unsprung mass and improving acceleration response in your drivetrain. The SUPERSPROX 49-tooth sprocket delivers measurable gains in power delivery while the grooved tooth design extends chain and...12111937- SKU:
- 12111937
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- MODEL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $69.95Now: $59.46Was: $69.95Qty in Cart: 0Quantity:Price:MSRP: $69.95Now: $59.46Was: $69.95Subtotal: -
On Sale
SUPERSPROX Rear Sprocket - Black - Yamaha - 51-Tooth RAL-245-51 BLK
SUPERSPROX
MSRP: $69.95Now: $59.46Was: $69.95A lightweight rear sprocket is critical for reducing unsprung weight and improving throttle response—and the SUPERSPROX 51-tooth delivers both without sacrificing durability. Built from 7075-T6 aluminum and CNC-machined to exacting tolerances, this...12111939- SKU:
- 12111939
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- MODEL:
- ALUMINUM
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
MSRP: $69.95Now: $59.46Was: $69.95 -
On Sale
SUPERSPROX Countershaft Sprocket - 14-Tooth CST-1902-14-1
SUPERSPROX
MSRP: $24.95Now: $21.21Was: $24.95Countershaft sprockets endure extreme stress from chain drive forces, and inferior materials lead to premature wear, power loss, and costly replacements. The SUPERSPROX 14-Tooth Countershaft Sprocket uses factory-grade SCM-435 carbon-free steel with an...12121349- SKU:
- 12121349
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- CHAIN SIZE:
- 520
- MATERIAL:
- STEEL
- UNITS:
- EACH
- TOOTH COUNT:
- 14
MSRP: $24.95Now: $21.21Was: $24.95 -
UFO Chain Slider - Kawasaki - Green KA04709-026
UFO
$19.95Chain wear against your swingarm creates a maintenance headache and compromises structural integrity. The UFO Chain Slider shields your swingarm from abrasive chain contact, extending the life of both components while maintaining consistent chain...12310848- SKU:
- 12310848
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- COLOR/FINISH:
- GREEN
- MATERIAL:
- PLASTIC
- TYPE:
- SWINGARM
- UNITS:
- EACH
- PRODUCT NAME:
- CHAIN SLIDER
$19.95
