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
$69.95A quality rear sprocket directly impacts your acceleration, top-end speed, and chain longevity. The SUPERSPROX 50-tooth red sprocket delivers the strength-to-weight ratio serious riders demand, combining premium 7075-T6 aluminum with precision CNC...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
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Red - Honda - 51-Tooth RAL21051RED
SUPERSPROX
$69.95A lightweight rear sprocket is one of the most effective upgrades for improving acceleration and reducing unsprung mass on your Honda. The SUPERSPROX 51-tooth sprocket delivers the strength of billet steel in an aluminum design that's significantly...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
$69.95A lightweight rear sprocket directly impacts your acceleration, handling response, and unsprung weight—all critical factors in competitive riding and track performance. The SUPERSPROX 51-tooth design delivers the strength of billet construction without...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 - Blue - Yamaha - 50-Tooth RAL-245-50 BLU
SUPERSPROX
$69.95A rear sprocket is one of the highest-wear components on your Yamaha, and chain slippage or premature wear will kill your performance on the track. The SUPERSPROX RAL-245-50 delivers the strength-to-weight ratio you need to maintain consistent power...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
$69.95A worn or undersized rear sprocket robs your Yamaha of acceleration and top-end performance. The SUPERSPROX 50-tooth rear sprocket delivers the lightweight strength you need to maximize power transfer while reducing unsprung weight—critical for both...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
$69.95 -
SUPERSPROX Rear Sprocket - Black - Kawasaki - 46-Tooth RAL-455-46-BLK
SUPERSPROX
$64.95A lightweight rear sprocket directly impacts acceleration, top speed, and overall drivetrain efficiency on your Kawasaki. The SUPERSPROX 46-tooth design delivers the strength of premium materials without the weight penalty that compromises performance...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
$64.95 -
SUPERSPROX Rear Sprocket - Black - Kawasaki - 38-Tooth RAL-801-38-BLK
SUPERSPROX
$64.95A lightweight rear sprocket directly impacts your acceleration, top-end speed, and overall power delivery—especially critical for competitive riders who demand responsiveness off the line. The SUPERSPROX 38-tooth sprocket combines 7075-T6 aluminum with...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
$64.95 -
SUPERSPROX Rear Sprocket - Black - Yamaha - 35-Tooth RAL-834-35-BLK
SUPERSPROX
$64.95A lightweight rear sprocket directly impacts your acceleration, top-end speed, and overall drivetrain efficiency—especially critical if you're chasing lap times or pushing your bike to its limits. The SUPERSPROX 35-tooth sprocket combines premium 7075-T6...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
$64.95A rear sprocket is one of the highest-wear components on your bike—poor quality means premature chain stretch, loss of power delivery, and costly replacements. The SUPERSPROX 37-tooth rear sprocket combines lightweight 7075-T6 aluminum construction with...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
$64.95 -
SUPERSPROX Rear Sprocket - Black - Yamaha - 40-Tooth RAL-853-40-BLK
SUPERSPROX
$69.95A lightweight rear sprocket directly impacts your power delivery, acceleration, and overall drivetrain efficiency—especially critical if you're optimizing your Yamaha's performance on the track or trail. The SUPERSPROX 40-tooth design balances aggressive...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
$69.95A worn or stock sprocket directly impacts your power delivery, acceleration response, and chain longevity. The SUPERSPROX rear sprocket in 50-tooth delivers the lightweight durability you need to maximize performance while minimizing...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
$69.95 -
SUPERSPROX Rear Sprocket - Orange - KTM/Husqvarna - 51-Tooth RAL-990-51-ORG
SUPERSPROX
$69.95A lightweight rear sprocket is critical to reducing unsprung weight and improving acceleration response on your KTM or Husqvarna. The SUPERSPROX 51-tooth sprocket delivers the strength of billet aluminum without the rotational mass penalty, while the...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
$69.95 -
SUPERSPROX Steel Rear Sprocket - 50-Tooth RFE-457-50-BLK
SUPERSPROX
$44.95A rear sprocket is critical to your drivetrain's efficiency, acceleration, and overall durability. The SUPERSPROX 50-tooth steel sprocket delivers race-proven durability with precision engineering, making it ideal for riders who demand consistent...12101899- SKU:
- 12101899
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$44.95 -
SUPERSPROX Steel Rear Sprocket - 49-Tooth RFE-460-49-BLK
SUPERSPROX
$54.95A steel rear sprocket needs to handle the demands of both track abuse and street riding without sacrificing longevity or performance. The SUPERSPROX 49-tooth RFE-460-49-BLK delivers the durability and precision fit that serious riders demand, engineered...12101903- SKU:
- 12101903
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$54.95Qty in Cart: 0Quantity:Price:$54.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 51-Tooth RFE-460-51-BLK
SUPERSPROX
$59.95A quality rear sprocket directly impacts your drivetrain's efficiency, durability, and acceleration response. The SUPERSPROX 51-tooth steel sprocket delivers race-proven performance with the reliability needed for sustained high-mileage use on both...12101905- SKU:
- 12101905
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
$59.95 -
SUPERSPROX Steel Rear Sprocket - 43-Tooth RFE-487-43-BLK
SUPERSPROX
$44.95A rear sprocket is critical to your drivetrain's efficiency and longevity—it directly affects acceleration, top speed, and wear on your entire chain system. The SUPERSPROX 43-tooth rear sprocket delivers race-proven durability without the weight penalty...12101913- SKU:
- 12101913
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 43
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
$44.95 -
SUPERSPROX Steel Rear Sprocket - 41-Tooth RFE-808-41-BLK
SUPERSPROX
$49.95If you're running a chain drive system that demands reliability without sacrificing performance, sprocket wear directly impacts your power delivery and overall drivetrain longevity. The SUPERSPROX 41-Tooth Steel Rear Sprocket delivers race-proven...12101918- SKU:
- 12101918
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 41
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
$49.95 -
SUPERSPROX Steel Rear Sprocket - 48-Tooth RFE-808-48-BLK
SUPERSPROX
$59.95A worn or inefficient rear sprocket directly impacts acceleration, fuel economy, and drivetrain longevity. The SUPERSPROX 48-Tooth Steel Rear Sprocket delivers race-proven durability with CNC-laser precision, ensuring exact fitment and consistent...12101921- SKU:
- 12101921
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 50-Tooth RFE-990-50-BLK
SUPERSPROX
$59.95A rear sprocket is critical to your drivetrain's efficiency, durability, and power delivery. The SUPERSPROX 50-tooth steel sprocket delivers race-proven reliability with a lightweight design that reduces unsprung weight without compromising strength. Its...12101942- SKU:
- 12101942
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 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:
- 50
- MOUNTING POSITION:
- REAR
$59.95 -
SUPERSPROX Steel Rear Sprocket - 51-Tooth RFE-990-51-BLK
SUPERSPROX
$59.95A rear sprocket is one of the highest-wear components in any drivetrain system, directly impacting acceleration, top speed, and chain longevity. The SUPERSPROX 51-tooth steel sprocket delivers race-tested durability with a lightweight design that...12101943- SKU:
- 12101943
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
$59.95
