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 - 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...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...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...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...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...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
$54.95A 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...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
$54.95 -
SUPERSPROX Rear Sprocket - Black - Yamaha - 35-Tooth RAL-834-35-BLK
SUPERSPROX
$54.95A 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...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
$54.95Qty in Cart: 0Quantity:Price:$54.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Yamaha - 37-Tooth RAL-834-37-BLK
SUPERSPROX
$54.95A 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...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
$54.95 -
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...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...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...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,...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...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
$49.95A 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...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
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 43-Tooth RFE-487-43-BLK
SUPERSPROX
$49.95A 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...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
$49.95 -
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...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...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
$49.95A 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...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
$49.95 -
SUPERSPROX Steel Rear Sprocket - 51-Tooth RFE-990-51-BLK
SUPERSPROX
$49.95A 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...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
$49.95 -
SUPERSPROX Steel Rear Sprocket - 52-Tooth RFE-990-52-BLK
SUPERSPROX
$49.95A quality rear sprocket is fundamental to your drivetrain's efficiency, acceleration response, and overall longevity. The SUPERSPROX Steel Rear Sprocket delivers race-proven durability with a...12101944- SKU:
- 12101944
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 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:
- 52
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal:
