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
-
MOOSE RACING Dual Sprocket - Silver - 49 Tooth 1210-210-49-11X
MOOSE RACING
$69.95If you're running a rear sprocket that can't keep pace with your riding demands, you're leaving performance on the table. The MOOSE RACING Dual Sprocket delivers the weight savings of aluminum with the durability of steel, giving you a component that...12101464- SKU:
- 12101464
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- STYLE:
- DUAL
- TOOTH COUNT:
- 49
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
$69.95 -
MOOSE RACING Dual Sprocket - Silver - 50 Tooth 1210-210-50-11X
MOOSE RACING
$69.95A rear sprocket that doesn't compromise means choosing a part engineered for both lightweight performance and real-world durability. The MOOSE RACING Dual Sprocket combines a 7075 T6 aluminum inner ring with a heavy-duty steel outer ring, giving you the...12101467- SKU:
- 12101467
- Availability:
- Ships Same Business Day
- Weight:
- 1.73 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
MOOSE RACING Dual Sprocket - Black - 51 Tooth 1210-210-51-10X
MOOSE RACING
$69.95A dual-material sprocket design gives you the best of both worlds: the lightweight responsiveness of aluminum with the durability and chain-grip reliability of steel. Whether you're racing in mud, sand, or hardpack, the self-cleaning tooth grooves...12101469- SKU:
- 12101469
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- BLACK
- 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
$69.95 -
PARTS UNLIMITED Rear Yamaha Sprocket - 420 - 32 Tooth 21W-25432-10
PARTS UNLIMITED
$16.27A worn or damaged rear sprocket directly impacts your power delivery, throttle response, and chain wear patterns. The PARTS UNLIMITED 420 32-tooth rear sprocket restores OEM-specification performance with precision-machined teeth and splines that...K223603K- SKU:
- K223603K
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- TOOTH COUNT:
- 32
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$16.27 -
MOOSE RACING Dual Sprocket MSE - Black - 50-Tooth 1210-822-50-10X
MOOSE RACING
$69.95A rear sprocket that actually keeps up with your riding demands requires the right balance of strength and weight—and the MOOSE RACING Dual Sprocket MSE delivers exactly that. By combining a lightweight 7075 T6 aluminum inner ring with a heavy-duty steel...12101512- SKU:
- 12101512
- 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
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 50
$69.95 -
MOOSE RACING Dual Sprocket MSE - Silver - 50-Tooth 1210-822-50-11X
MOOSE RACING
$69.95A rear sprocket needs to handle brutal acceleration, mud-slinging conditions, and thousands of shift cycles without compromising weight or durability. The MOOSE RACING Dual Sprocket MSE delivers exactly that—a hybrid design that pairs a lightweight 7075...12101513- SKU:
- 12101513
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- 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 - Silver - 48-Tooth 1210-897-48-11X
MOOSE RACING
$69.95A rear sprocket needs to handle extreme torque, mud, and constant wear without sacrificing weight—and the MOOSE RACING Dual Sprocket delivers on all fronts. By combining a lightweight 7075 T6 aluminum inner ring with a heavy-duty steel outer ring, this...12101515- SKU:
- 12101515
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- DUAL
- TOOTH COUNT:
- 48
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- 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 - Silver - 49-Tooth 1210-897-49-11X
MOOSE RACING
$69.95A rear sprocket must deliver reliable power transfer while resisting the extreme forces of acceleration and constant chain engagement. The MOOSE RACING Dual Sprocket MSE combines a lightweight 7075 T6 aluminum inner ring with a hardened steel outer ring,...12101518- SKU:
- 12101518
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- DUAL
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- UNITS:
- EACH
$69.95 -
MOOSE RACING Dual Sprocket MSE - Orange - 49-Tooth 1210-897-49-14X
MOOSE RACING
$69.95A rear sprocket must handle punishing power transfers without sacrificing lightweight performance—and the MOOSE RACING Dual Sprocket MSE delivers exactly that balance. By combining a 7075 T6 aluminum inner ring with a heavy-duty steel outer ring, this...12101519- SKU:
- 12101519
- Availability:
- Ships Same Business Day
- Weight:
- 1.71 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- DUAL
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
MOOSE RACING Dual Sprocket MSE - Silver - 50-Tooth 1210-897-50-11X
MOOSE RACING
$69.95A rear sprocket needs to handle extreme torque and repeated impact without weighing down your bike or failing mid-race. The MOOSE RACING Dual Sprocket MSE combines lightweight aluminum construction with steel reinforcement to deliver durability that...12101521- SKU:
- 12101521
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 50
- COLOR/FINISH:
- SILVER
- 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
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 49 Tooth 41201-430-810
PARTS UNLIMITED
$45.85A worn or damaged rear sprocket compromises your entire drivetrain's efficiency and can leave you stranded mid-race or ride. This PARTS UNLIMITED 49-tooth rear sprocket restores OEM-spec performance with precision-machined teeth and splines that engage...K223501J- SKU:
- K223501J
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- TYPE:
- DRIVE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NATURAL
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
$45.85 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 41 Tooth 41201-MG2-000
PARTS UNLIMITED
$41.77A worn or damaged sprocket directly compromises your drivetrain's efficiency, power transfer, and chain longevity. This OEM-spec rear sprocket delivers the precision fitment and durability your Honda demands, whether you're pushing lap times or keeping a...K223501L- SKU:
- K223501L
- Availability:
- Ships Same Business Day
- Weight:
- 1.63 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 41
- UNITS:
- EACH
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
$41.77 -
PARTS UNLIMITED Rear Honda Sprocket - 428 - 50 Tooth 41200-427-670
PARTS UNLIMITED
$30.55A worn or damaged rear sprocket directly compromises your acceleration, top-end performance, and chain longevity. This PARTS UNLIMITED 50-tooth rear sprocket restores OEM-exact engagement with your chain, eliminating slack and ensuring precise power...K223501Z- SKU:
- K223501Z
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$30.55Qty in Cart: 0Quantity:Price:$30.55Subtotal: -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 54 Tooth 41205-KA4-701
PARTS UNLIMITED
$44.83A worn or damaged rear sprocket compromises your entire drivetrain's efficiency, creating power loss and unpredictable handling on the track or road. This OEM-spec replacement sprocket restores precise engagement with your chain, ensuring consistent...K223502K- SKU:
- K223502K
- Availability:
- Ships Same Business Day
- Weight:
- 2.88 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 54
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
$44.83 -
PARTS UNLIMITED Rear Honda Sprocket - 420 - 47 Tooth 41201-GC4-000
PARTS UNLIMITED
$26.47A worn or damaged sprocket directly impacts your drivetrain's efficiency, throttle response, and chain longevity. This OEM-spec rear sprocket restores precise engagement with your chain, eliminating slack and ensuring consistent power delivery whether...K223502P- SKU:
- K223502P
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
$26.47 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 51 Tooth 41201-KA3-710
PARTS UNLIMITED
$47.43A worn or damaged rear sprocket directly impacts your power delivery, acceleration response, and overall drivetrain efficiency. This OEM-spec replacement restores precise chain engagement and eliminates the noise, vibration, and performance loss that...K223502S- SKU:
- K223502S
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- UNITS:
- EACH
$47.43 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 50 Tooth 41201KG0000-50T
PARTS UNLIMITED
$44.83A worn or damaged rear sprocket compromises your entire drivetrain's efficiency, causing poor acceleration, increased wear on your chain, and unpredictable power delivery. This OEM-spec replacement restores precision engagement between chain and...K223502V- SKU:
- K223502V
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NATURAL
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- TYPE:
- DRIVE
$44.83 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 42 Tooth 41201KFO000-42T
PARTS UNLIMITED
$30.55A worn or damaged rear sprocket compromises your power delivery and shifts feel sloppy—exactly what you don't want on the track or trail. This OEM-spec 42-tooth rear sprocket restores precise engagement with your chain, ensuring crisp acceleration and...K223503B- SKU:
- K223503B
- Availability:
- Ships Same Business Day
- Weight:
- 1.63 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 42
- COLOR/FINISH:
- NATURAL
- TYPE:
- DRIVE
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
$30.55 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 48 Tooth 41201-MG3-000
PARTS UNLIMITED
$47.89A worn or damaged rear sprocket directly impacts your Honda's acceleration, top-end performance, and overall drivetrain efficiency. This OEM-spec sprocket restores precise chain engagement and eliminates the power loss and noise that come with a degraded...K223503D- SKU:
- K223503D
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
$47.89 -
PARTS UNLIMITED Rear Honda Sprocket - 420 - 49 Tooth 41201-6C4-830
PARTS UNLIMITED
$30.55A worn or damaged rear sprocket kills your acceleration and forces your engine to work harder than it should. This OEM-spec 49-tooth rear sprocket restores precise chain engagement and efficient power delivery, whether you're running stock gearing or...K223504B- SKU:
- K223504B
- Availability:
- Ships Same Business Day
- Weight:
- 1.56 LBS
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$30.55
