Dirt Bike Rear Sprockets
Dirt Bike Rear Sprockets for Honda, KTM, Beta & Husqvarna: 42-51 Tooth Steel & Aluminum at JJ Motorsports
Customize your dirt bike's gearing for optimal acceleration or top speed with premium rear sprockets from JJ Motorsports, precision-machined for perfect chain fit, reduced weight, and extreme durability in motocross, enduro, and trail riding. Our selection includes high-tensile steel and lightweight aluminum sprockets in 42-51 tooth counts designed for smoother power transfer, less rotational mass, and customizable ratios to match terrain or riding style. Compatible with top models like Honda CRF, KTM SX/EXC, Beta RR, Husqvarna FC/FE, and more, these race-proven sprockets from trusted brands ensure minimal chain wear, reliable performance, and longevity in muddy, rocky, or high-speed conditions. From JT Sprockets' computer-optimized steel for OEM reliability to Renthal's ultralight aluminum for racing gains, dial in your final drive for tighter woods, faster tracks, or balanced trails with the ideal tooth count.
Shop brands like JT Sprockets, Moose Racing, and Renthal for world-class quality. Explore related categories such as dirt bike front sprockets for full gearing kits or dirt bike drive chains for complete drivetrain upgrades.
Top Dirt Bike Rear Sprockets
- JT Sprockets Steel Rear Sprocket Graphite 48 Tooth JTX251.48GR – 48-tooth hardened steel rear sprocket with graphite finish; computer-designed for perfect chain alignment and durability in off-road conditions.
- JT Sprockets Rear Sprocket Beta/Honda Red 51 Tooth JTA210.51RED – Lightweight aluminum 51-tooth sprocket in red anodized finish for Beta RR and Honda CRF models; reduces unsprung weight for better acceleration.
- Moose Offroad Steel Rear Sprocket 48 Tooth 1210-BET-48-STL – Heavy-duty steel 48-tooth sprocket for Beta models; heat-treated for extreme strength and wear resistance in aggressive off-road use.
- Renthal Rear Sprocket Aluminum 42 Tooth Gas Gas/Husaberg/Husqvarna/KTM 224U-520-42GPSI – Ultralight CNC-machined aluminum 42-tooth sprocket with gold finish; precision engineering for KTM, Husqvarna, and Gas Gas models, ideal for racing.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Renthal 46-Tooth Black Rear Sprocket for KTM 441U-520-46GPBK
RENTHAL
$99.82If you're running a KTM off-road or racing setup, sprocket weight directly impacts your bike's acceleration and handling characteristics—and this Renthal rear sprocket cuts that rotational mass by roughly two-thirds compared to steel alternatives. The...12111877- SKU:
- 12111877
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 46
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$99.82 -
Renthal 48-Tooth Black Rear Sprocket for KTM 441U-520-48GPBK
RENTHAL
$99.82A lighter, more durable rear sprocket directly impacts your KTM's acceleration, fuel efficiency, and chain wear rates. The Renthal 48-tooth design in 7075-T6 aluminum delivers the rigidity of steel without the rotational mass penalty, while self-cleaning...12111878- SKU:
- 12111878
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$99.82 -
Renthal 47-Tooth Blue Rear Sprocket for Yamaha YZ65 121U-420-47GBBU
RENTHAL
$104.61If you're running a YZ65, sprocket selection directly impacts your bike's acceleration, top-end speed, and throttle response. The Renthal 47-tooth rear sprocket delivers the weight savings and durability needed for competitive riding, with self-cleaning...12112060- SKU:
- 12112060
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- COLOR/FINISH:
- BLUE
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
$104.61 -
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
$104.61Qty in Cart: 0Quantity:Price:$104.61Subtotal: -
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 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: -
Renthal 49-Tooth Rear Sprocket for Kawasaki 520 Chain Black 112U-520-49GEBK
RENTHAL
$99.82If you're running a Kawasaki with a 520 chain, sprocket wear directly impacts your power delivery and acceleration. The Renthal 49-tooth rear sprocket replaces the weak link in your drivetrain with a CNC-machined 7075-T6 aluminum design that's 66%...12110016- SKU:
- 12110016
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$99.82 -
Renthal Black 52-Tooth Rear Sprocket for Kawasaki 112U-520-52GEBK
RENTHAL
$99.82If you're running a 520 chain setup on your Kawasaki, sprocket wear directly impacts acceleration, chain life, and overall drivetrain efficiency. The Renthal 52-tooth rear sprocket combines lightweight aluminum construction with self-cleaning tooth...12110019- SKU:
- 12110019
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 52
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$99.82 -
RENTHAL Sprocket - Suzuki - Black - 49-Tooth 123U-520-49GYBK
RENTHAL
$99.82A lightweight sprocket is essential for reducing unsprung weight and improving acceleration response, especially in competitive riding where every gram impacts performance. RENTHAL's 49-tooth design combined with their advanced 7075-T6 aluminum...12110021- SKU:
- 12110021
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- TOOTH COUNT:
- 49
- TYPE:
- DRIVE
$99.82 -
Renthal 50T Rear Sprocket for Suzuki RM125 RM250 RMZ450 DRZ400 123U-520-50GYBK
RENTHAL
$99.82If you're running a Suzuki dirt bike or dual-sport, your rear sprocket is doing heavy lifting—literally. The Renthal 50T sprocket cuts unsprung weight by 66% compared to steel alternatives, which translates to sharper acceleration, quicker handling...12110022- SKU:
- 12110022
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$99.82
