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
-
Renthal 47T Rear Sprocket 420 Chain Orange 192U-420-47GPOR
RENTHAL
$104.61For off-road riders pushing their machines in mud, sand, and rocky terrain, sprocket durability directly impacts reliability and performance. The Renthal 47T Orange Rear Sprocket eliminates mud buildup and maintains consistent power delivery where stock...12112466- SKU:
- 12112466
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
$104.61 -
Renthal Rear Sprocket 42T Orange 224U-520-42GPOR
RENTHAL
$104.61If you're running a 42-tooth rear sprocket on your Husaberg or KTM, you're already optimizing for acceleration and low-end grunt—but a stock steel sprocket is costing you performance through unnecessary weight and accelerated wear. The Renthal 42T rear...12112469- SKU:
- 12112469
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- ORANGE
- MOUNTING POSITION:
- REAR
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 42
- TYPE:
- DRIVE
- UNITS:
- EACH
$104.61 -
Renthal 44T Rear Sprocket Orange 224U-520-44GPOR
RENTHAL
$104.61Off-road conditions demand a rear sprocket that can handle mud, debris, and repeated impact without sacrificing weight or durability. The Renthal 44T combines premium 7075-T6 aluminum with self-cleaning tooth grooves that shed buildup in real time,...12112470- SKU:
- 12112470
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 44
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- UNITS:
- EACH
$104.61 -
Renthal 45T Rear Sprocket Orange 224U-520-45GPOR
RENTHAL
$104.61Reducing unsprung weight directly improves acceleration and handling—the Renthal 45T rear sprocket delivers this advantage while maintaining the durability needed for serious riding. At 66% lighter than steel, this 7075-T6 aluminum sprocket cuts...12112471- SKU:
- 12112471
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- TOOTH COUNT:
- 45
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
$104.61 -
Renthal 46T Rear Sprocket Orange 224U-520-46GPOR
RENTHAL
$104.61If you're running a 520-series drivetrain on your off-road bike or motocross machine, sprocket wear directly impacts acceleration, chain longevity, and overall power delivery to the ground. Renthal's 46T rear sprocket delivers the weight savings and...12112472- SKU:
- 12112472
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 46
$104.61 -
Renthal 51T Ultralight Rear Sprocket Orange 224U-520-51GPOR
RENTHAL
$104.61If you're running 520 chain on your off-road machine, unsprung weight directly impacts acceleration and handling—and this Renthal 51T sprocket sheds 66% compared to steel without sacrificing durability. The 7075-T6 aluminum construction combined with...12112477- SKU:
- 12112477
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- TYPE:
- DRIVE
$104.61 -
Renthal Rear Sprocket 53T Orange 224U-520-53GPOR
RENTHAL
$104.61Reducing unsprung weight is one of the most effective ways to improve acceleration, braking response, and overall chassis dynamics—and the Renthal 53T Rear Sprocket delivers that advantage without sacrificing durability. At just 1 lb and 66% lighter than...12112479- SKU:
- 12112479
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 53
- TYPE:
- DRIVE
- UNITS:
- EACH
$104.61 -
Renthal 36T Rear Sprocket Orange 415 Chain 491-415-36P-OR
RENTHAL
$104.61If you're running a 415 chain setup, your sprocket choice directly impacts acceleration response and rotational efficiency. The Renthal 36T rear sprocket cuts rotational mass by 66% compared to steel, translating to sharper throttle response and reduced...12112489- SKU:
- 12112489
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 415
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 36
- TYPE:
- DRIVE
- UNITS:
- EACH
$104.61 -
Renthal 13-Tooth Front Sprocket for Kawasaki KLX140 431--428-13GP
RENTHAL
$37.95The Renthal 13-Tooth Front Sprocket delivers measurable gains in acceleration and throttle response while reducing unsprung weight on your KLX140. Built from case-hardened 655-M13 nickel-chromium steel, it withstands the demands of trail riding and...12120609- SKU:
- 12120609
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- TYPE:
- FRONT
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
$37.95 -
Renthal Front Sprocket 14T 520 Chain Kawasaki 445--520-14GP
RENTHAL
$37.95A worn or undersized front sprocket robs your Kawasaki of acceleration and forces your engine to work harder than necessary. The Renthal 14T Front Sprocket delivers the precise gearing and durability you need for consistent power delivery, whether you're...12120500- SKU:
- 12120500
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TYPE:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
$37.95 -
Renthal Front Sprocket 14T 420 Chain KTM 65 SX 2009-2023 440--420-14GP
RENTHAL
$37.95If you're running a KTM 65 SX, sprocket choice directly impacts your power delivery and track performance. A 14-tooth front sprocket optimizes your gear ratio for responsive acceleration while the ultralight construction reduces rotational mass—critical...12120708- SKU:
- 12120708
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- TOOTH COUNT:
- 14
- TYPE:
- FRONT
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
$37.95 -
Renthal Front Sprocket 12T 520 for Kawasaki KX250 KX250F KX250X KX250XC 453--520-12P
RENTHAL
$37.95A worn or undersized front sprocket directly impacts your KX250's acceleration and overall drivetrain efficiency. The Renthal 12T Front Sprocket delivers measurable performance gains through precision engineering and lightweight construction, giving you...12120202- SKU:
- 12120202
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TOOTH COUNT:
- 12
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FRONT
- UNITS:
- EACH
$37.95 -
Renthal Front Sprocket 14T 520 Chain Kawasaki KX250 KX250F 453--520-14GP
RENTHAL
$37.95If you're running a Kawasaki KX250 or KX250F, sprocket choice directly impacts your power delivery and handling characteristics. The Renthal 14T front sprocket delivers measurable weight savings and proven durability through its case-hardened 655M13...12120204- SKU:
- 12120204
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 14
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- CHAIN SIZE:
- 520
- TYPE:
- FRONT
- UNITS:
- EACH
$37.95 -
Renthal Front Sprocket 15T 420 Chain Kawasaki KLX110 431--420-15GP
RENTHAL
$37.95The Renthal 15T Front Sprocket is engineered to deliver responsive acceleration and reliable power transfer in demanding off-road conditions. Its case-hardened 655M13 nickel-chromium steel construction and self-cleaning tooth grooves eliminate...12120128- SKU:
- 12120128
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 15
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
$37.95 -
Renthal Front Sprocket 14T 420 Chain Honda CRF150R 2007-2026 461--420-14GP
RENTHAL
$37.95A lightweight front sprocket is one of the quickest ways to sharpen your CRF150R's acceleration and throttle response. The Renthal 14T reduces unsprung weight by 10-15%, improving both launch feel and overall handling dynamics while the case-hardened...12120285- SKU:
- 12120285
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- TYPE:
- FRONT
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 420
- TOOTH COUNT:
- 14
$37.95 -
Renthal 48-Tooth Red Rear Sprocket for Honda 154U-520-48GRRD
RENTHAL
$104.61If you're running a Honda off-road or racing setup, sprocket weight directly impacts your power delivery and handling—and a 66% weight reduction over steel translates to measurable gains in acceleration and responsiveness. The Renthal 48-tooth rear...12110159- SKU:
- 12110159
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
$104.61 -
Renthal Red 50-Tooth Rear Sprocket for Honda 154U-520-50GRRD
RENTHAL
$104.61If you're running a 520 chain on your Honda, sprocket weight directly impacts your bike's responsiveness off the line and through corners. The Renthal Red 50-Tooth Rear Sprocket cuts rotational mass by 66% compared to steel alternatives, delivering...12110161- SKU:
- 12110161
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$104.61 -
Renthal 52-Tooth Red Rear Sprocket for Honda 154U-520-52GRRD
RENTHAL
$104.61If you're running a Honda off-road rig, your sprocket is the critical link between engine power and ground traction. A worn or inadequate rear sprocket forces your drivetrain to work harder, reducing acceleration and increasing wear on your chain and...12110163- SKU:
- 12110163
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$104.61 -
Renthal 49-Tooth Blue Rear Sprocket for Yamaha WR YZ 150U-520-49GBBU
RENTHAL
$104.61If you're serious about off-road performance, your sprocket choice directly impacts acceleration, handling, and maintenance intervals. The Renthal 49-tooth rear sprocket cuts unsprung weight by roughly two-thirds compared to steel alternatives,...12110165- SKU:
- 12110165
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
$104.61 -
Renthal 52-Tooth Rear Sprocket for Yamaha WR YZ 150U-520-52GBBU
RENTHAL
$104.61If you're running your Yamaha WR or YZ 150 in mud-heavy terrain, chain wear and performance loss are constant battles. The Renthal 52-Tooth Rear Sprocket cuts that problem in half with self-cleaning mud grooves that prevent debris buildup while keeping...12110168- SKU:
- 12110168
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$104.61Qty in Cart: 0Quantity:Price:$104.61Subtotal:
