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
-
PARTS UNLIMITED Rear Kawasaki Sprocket - 520 - 45 Tooth CT217-45S
PARTS UNLIMITED
$40.75A worn or damaged rear sprocket kills acceleration, creates drivetrain noise, and accelerates wear on your chain and front sprocket. The PARTS UNLIMITED 45-tooth rear sprocket restores OEM-spec performance with precision-machined teeth and hardened steel...K223702G- SKU:
- K223702G
- Availability:
- Ships Same Business Day
- Weight:
- 2.19 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
$40.75 -
PARTS UNLIMITED Rear Kawasaki Sprocket - 428 - 50 Tooth 42041-146
PARTS UNLIMITED
$27.49A worn or damaged rear sprocket compromises power delivery and accelerates wear on your chain and transmission. This OEM-spec replacement restores precise engagement and reliable performance, whether you're on the track or the trail. With hardened steel...K223724- SKU:
- K223724
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- CHAIN SIZE:
- 428
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$27.49Qty in Cart: 0Quantity:Price:$27.49Subtotal: -
PARTS UNLIMITED Rear Yamaha Sprocket - 520 - 47 Tooth 214-25447-10
PARTS UNLIMITED
$42.79A worn or damaged rear sprocket compromises your chain drive efficiency, accelerates component wear, and can leave you stranded mid-ride. The PARTS UNLIMITED Rear Yamaha Sprocket delivers OEM-specification performance with precision-machined teeth and...K223623- SKU:
- K223623
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
$42.79 -
PARTS UNLIMITED Rear Kawasaki Sprocket - 520 - 43 Tooth 42041-1260
PARTS UNLIMITED
$41.77A worn or damaged sprocket compromises your chain drive's efficiency and can leave you stranded mid-ride. This OEM-spec rear sprocket restores precise engagement between your chain and wheel, ensuring reliable power delivery and extending drivetrain life...K223702B- SKU:
- K223702B
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 43
- TYPE:
- DRIVE
- RIDING STYLE:
- STREET
$41.77 -
PARTS UNLIMITED Rear Honda Sprocket - 420 - 37 Tooth 41201-GW8-670
PARTS UNLIMITED
$17.29A worn or damaged rear sprocket directly impacts your chain engagement and overall drivetrain efficiency, leading to power loss and accelerated wear on your entire transmission system. This OEM-spec replacement restores precise tooth geometry and spline...K223901- SKU:
- K223901
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 37
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
$17.29Qty in Cart: 0Quantity:Price:$17.29Subtotal: -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 47 Tooth 41201-ML3-81
PARTS UNLIMITED
$37.69A worn or damaged rear sprocket compromises your entire drivetrain's efficiency and acceleration response. This OEM-spec replacement ensures your Honda returns to factory performance standards with precise tooth engagement and reliable power delivery...K223903- SKU:
- K223903
- Availability:
- Ships Same Business Day
- Weight:
- 2.52 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TYPE:
- DRIVE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NATURAL
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$37.69 -
PARTS UNLIMITED Rear Yamaha Sprocket - 49 Tooth 5HP-25449-20-49
PARTS UNLIMITED
$25.45A worn or damaged rear sprocket directly impacts your Yamaha's acceleration, top-end performance, and overall drivetrain efficiency. This PARTS UNLIMITED sprocket restores OEM-spec engagement and responsiveness, ensuring consistent power delivery whether...12100031- SKU:
- 12100031
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- MOUNTING POSITION:
- REAR
$25.45 -
MOOSE RACING Dual Sprocket MSE - Orange - 50-Tooth 1210-897-50-14X
MOOSE RACING
$69.95If you're running a rear sprocket that can't keep up with your riding demands, you're leaving performance on the table. The MOOSE RACING Dual Sprocket MSE combines a lightweight 7075 T6 aluminum inner ring with a heavy-duty steel outer ring—giving you...12101522- SKU:
- 12101522
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 50
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
MOOSE RACING Dual Sprocket - Black - 52 Tooth 1210-460-52-10X
MOOSE RACING
$69.95A rear sprocket must deliver reliable power transfer while handling the demands of high-RPM racing and rough terrain. The MOOSE RACING Dual Sprocket combines a lightweight 7075 T6 aluminum inner ring with a hardened steel outer ring, giving you the...12101498- SKU:
- 12101498
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- DUAL
$69.95 -
MOOSE RACING Dual Sprocket - Green - 52 Tooth 1210-460-52-15X
MOOSE RACING
$69.95A rear sprocket needs to handle the relentless punishment of acceleration, braking, and terrain changes—which is why compromising on durability or weight costs you performance. The MOOSE RACING Dual Sprocket combines a lightweight 7075 T6 aluminum inner...12101499- SKU:
- 12101499
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- COLOR/FINISH:
- GREEN
- TOOTH COUNT:
- 52
$69.95 -
MOOSE RACING Dual Sprocket - Black - 48 Tooth 1210-808-48-10X
MOOSE RACING
$69.95If you're running a dual-sprocket setup, you need a rear sprocket that can handle the demands of high-performance riding without becoming a maintenance headache. The MOOSE RACING Dual Sprocket delivers the durability of steel with the weight savings of...12101500- SKU:
- 12101500
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 48
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$69.95 -
MOOSE RACING Dual Sprocket - Silver - 48 Tooth 1210-808-48-11X
MOOSE RACING
$69.95A rear sprocket must balance weight, durability, and longevity—and most aluminum options fail under sustained load, while steel alternatives rob you of precious performance gains. The MOOSE RACING Dual Sprocket delivers the best of both worlds with a...12101501- SKU:
- 12101501
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
$69.95 -
MOOSE RACING Dual Sprocket - Black - 49 Tooth 1210-808-49-10X
MOOSE RACING
$69.95The MOOSE RACING Dual Sprocket delivers the weight savings of aluminum with the durability of steel—a hybrid design that resists wear while keeping your bike responsive. If you're serious about maintaining chain drive efficiency across demanding terrain,...12101502- SKU:
- 12101502
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- DUAL
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- UNITS:
- EACH
$69.95 -
MOOSE RACING Dual Sprocket - Silver - 49 Tooth 1210-808-49-11X
MOOSE RACING
$69.95A rear sprocket needs to survive mud, sand, and constant chain engagement without adding unnecessary weight to your bike. The MOOSE RACING Dual Sprocket combines lightweight 7075 T6 aluminum construction with a heavy-duty steel outer ring to deliver the...12101503- SKU:
- 12101503
- Availability:
- Ships Same Business Day
- Weight:
- 1.77 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- STYLE:
- DUAL
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
$69.95 -
MOOSE RACING Dual Sprocket - Black - 50 Tooth 1210-808-50-10X
MOOSE RACING
$69.95The MOOSE RACING Dual Sprocket delivers the durability you need without the weight penalty of traditional steel designs. By combining a lightweight 7075 T6 aluminum inner ring with a heavy-duty steel outer ring, this 50-tooth sprocket provides...12101504- SKU:
- 12101504
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$69.95 -
MOOSE RACING Dual Sprocket - Silver - 50 Tooth 1210-808-50-11X
MOOSE RACING
$69.95A dual-ring sprocket demands precision engineering to handle the abuse of competitive riding, and the MOOSE RACING 50-tooth strikes the right balance between durability and weight savings. The hybrid 7075 T6 aluminum inner ring paired with heavy-duty...12101505- SKU:
- 12101505
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
$69.95 -
MOOSE RACING Dual Sprocket - Black - 51 Tooth 1210-808-51-10X
MOOSE RACING
$69.95A dual-material sprocket design that delivers the lightweight advantage of aluminum with the durability and wear resistance of steel—exactly what you need for consistent power delivery across demanding riding conditions. The MOOSE RACING 51-tooth...12101506- SKU:
- 12101506
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- DUAL
- TYPE:
- DRIVE
$69.95 -
MOOSE RACING Dual Sprocket - Silver - 51 Tooth 1210-808-51-11X
MOOSE RACING
$69.95A dual-material sprocket engineered for riders who demand both lightweight performance and extreme durability. The 51-tooth configuration delivers the perfect balance of acceleration and top-end speed, while the hybrid construction—7075 T6 aluminum inner...12101507- SKU:
- 12101507
- Availability:
- Ships Same Business Day
- Weight:
- 1.84 LBS
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$69.95 -
MOOSE RACING Dual Sprocket MSE - Black - 48-Tooth 1210-822-48-10X
MOOSE RACING
$69.95Sprocket wear is one of the fastest ways to lose performance and reliability on the track or trail. The MOOSE RACING Dual Sprocket MSE combines a lightweight 7075 T6 aluminum inner ring with a heavy-duty steel outer ring, giving you the durability of...12101508- SKU:
- 12101508
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- TOOTH COUNT:
- 48
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
$69.95 -
PARTS UNLIMITED Rear Yamaha Sprocket - 420 - 48 Tooth 122-25448-10
PARTS UNLIMITED
$23.41A worn or damaged rear sprocket directly impacts chain wear, acceleration response, and overall drivetrain efficiency on your Yamaha. This OEM-specification replacement restores factory performance characteristics and ensures reliable engagement with...K223603D- SKU:
- K223603D
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
$23.41
