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
-
SUPERSPROX Rear Sprocket - Red - Honda - 50-Tooth RAL21050RED
SUPERSPROX
$69.95SUPERSPROX Rear Sprocket Red Honda 50-Tooth RAL21050REDMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable anodizing...12111925- SKU:
- 12111925
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- MODEL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- UNITS:
- EACH
$69.95 -
SUPERSPROX Rear Sprocket - Red - Honda - 51-Tooth RAL21051RED
SUPERSPROX
$69.95SUPERSPROX Rear Sprocket Red Honda 51-Tooth RAL21051REDMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable anodizing...12111926- SKU:
- 12111926
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- MODEL:
- ALUMINUM
- UNITS:
- EACH
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Honda - 51-Tooth RAL21051BLK
SUPERSPROX
$69.95SUPERSPROX Rear Sprocket Black Honda 51-Tooth RAL21051BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable anodizing...12111929- SKU:
- 12111929
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- MODEL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Honda - 52-Tooth RAL21052BLK
SUPERSPROX
$74.95SUPERSPROX Rear Sprocket Black Honda 52-Tooth RAL21052BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable anodizing...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
$74.95 -
SUPERSPROX Rear Sprocket - Blue - Yamaha - 48-Tooth RAL-245-48 BLU
SUPERSPROX
$69.95SUPERSPROX Rear Sprocket Blue Yamaha 48-Tooth RAL-245-48 BLUMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$69.95SUPERSPROX Rear Sprocket Blue Yamaha 49-Tooth RAL-245-49 BLUMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$69.95 -
SUPERSPROX Rear Sprocket - Blue - Yamaha - 50-Tooth RAL-245-50 BLU
SUPERSPROX
$69.95SUPERSPROX Rear Sprocket Blue Yamaha 50-Tooth RAL-245-50 BLUMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$69.95SUPERSPROX Rear Sprocket Black Yamaha 50-Tooth RAL-245-50 BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Husqvarna/KTM - 46-Tooth RAL-4-46 BLK
SUPERSPROX
$64.95SUPERSPROX Rear Sprocket Black Husqvarna/KTM 46-Tooth RAL-4-46 BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$64.95 -
SUPERSPROX Rear Sprocket - Black - Kawasaki - 46-Tooth RAL-455-46-BLK
SUPERSPROX
$64.95SUPERSPROX Rear Sprocket Black Kawasaki 46-Tooth RAL-455-46-BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Kawasaki - 50-Tooth RAL-457-50-BLK
SUPERSPROX
$64.95SUPERSPROX Rear Sprocket Black Kawasaki 50-Tooth RAL-457-50-BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...12111943- SKU:
- 12111943
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 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
$69.95SUPERSPROX Rear Sprocket Black Kawasaki 49-Tooth RAL-460-49-BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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 - Black - Kawasaki - 38-Tooth RAL-801-38-BLK
SUPERSPROX
$64.95SUPERSPROX Rear Sprocket Black Kawasaki 38-Tooth RAL-801-38-BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Yamaha - 35-Tooth RAL-834-35-BLK
SUPERSPROX
$64.95SUPERSPROX Rear Sprocket Black Yamaha 35-Tooth RAL-834-35-BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Yamaha - 37-Tooth RAL-834-37-BLK
SUPERSPROX
$64.95SUPERSPROX Rear Sprocket Black Yamaha 37-Tooth RAL-834-37-BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Yamaha - 40-Tooth RAL-853-40-BLK
SUPERSPROX
$69.95SUPERSPROX Rear Sprocket Black Yamaha 40-Tooth RAL-853-40-BLKMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with durable...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
$69.95SUPERSPROX Rear Sprocket Orange KTM/Husqvarna 50-Tooth RAL-990-50-ORGMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with...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
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Orange - KTM/Husqvarna - 51-Tooth RAL-990-51-ORG
SUPERSPROX
$69.95SUPERSPROX Rear Sprocket Orange KTM/Husqvarna 51-Tooth RAL-990-51-ORGMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with...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
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Orange - KTM/Husqvarna - 52-Tooth RAL-990-52-ORG
SUPERSPROX
$74.95SUPERSPROX Rear Sprocket Orange KTM/Husqvarna 52-Tooth RAL-990-52-ORGMade from 7075-T6 aluminum for high strength, Fully CNC machined for a perfect fit, Grooved teeth prevent dirt build up, helping to maximize sprocket and chain life, Finished with...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
$74.95 -
SUPERSPROX Steel Rear Sprocket - 39-Tooth RFE-451-39-BLK
SUPERSPROX
$54.95SUPERSPROX Steel Rear Sprocket 39-Tooth RFE-451-39-BLKDeveloped on the race track to give longer system life and high performance for street and off-road applications, Using CAD designed and CNC-Laser cutting to ensure an exact fit on the wheel, Made to...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
