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 MSE - Black - 50-Tooth 1210-897-50-10X
MOOSE RACING
$69.95A rear sprocket needs to handle constant torque cycles without compromising your power delivery—which is why the MOOSE RACING Dual Sprocket MSE delivers the weight savings of aluminum with the durability of steel. The hybrid construction keeps your...12101520- SKU:
- 12101520
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- STYLE:
- DUAL
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
$69.95 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 46 Tooth 64511-14220
PARTS UNLIMITED
$36.67A worn or damaged rear sprocket directly impacts your bike's power delivery, acceleration, and overall drivetrain efficiency. The PARTS UNLIMITED 46-tooth rear sprocket is manufactured to OEM specifications using hardened steel, ensuring the same...K223801S- SKU:
- K223801S
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STEEL
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
$36.67Qty in Cart: 0Quantity:Price:$36.67Subtotal: -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 42 Tooth 64511-14A00
PARTS UNLIMITED
$35.65A worn or damaged sprocket directly impacts chain engagement, throttle response, and overall drivetrain efficiency. This OEM-specification rear sprocket restores precise tooth geometry and spline fit, ensuring reliable power delivery and extending chain...K223802Z- SKU:
- K223802Z
- Availability:
- Ships Same Business Day
- Weight:
- 1.69 LBS
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 42
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$35.65Qty in Cart: 0Quantity:Price:$35.65Subtotal: -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 42 Tooth 41201KL4-671-42
PARTS UNLIMITED
$37.05A worn or damaged rear sprocket compromises your bike's acceleration, fuel efficiency, and overall drivetrain integrity. The PARTS UNLIMITED 42-tooth rear sprocket restores OEM performance with precision-machined teeth and hardened steel construction...K223505Z- SKU:
- K223505Z
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- COLOR/FINISH:
- NATURAL
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 42
- UNITS:
- EACH
$37.05Qty in Cart: 0Quantity:Price:$37.05Subtotal: -
On Sale
VORTEX Aluminum Sprocket - Silver - Rear - 34-Tooth 206-34
VORTEX
MSRP: $59.95Now: $50.96Was: $59.95A high-quality rear sprocket directly impacts your acceleration, top-end performance, and drivetrain reliability. The VORTEX 34-tooth aluminum sprocket delivers the precision engineering and durability required for consistent lap times and extended...12111712- SKU:
- 12111712
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- ALUMINUM
- TYPE:
- DRIVE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- SILVER
- TOOTH COUNT:
- 34
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $59.95Now: $50.96Was: $59.95Qty in Cart: 0Quantity:Price:MSRP: $59.95Now: $50.96Was: $59.95Subtotal: -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 41 Tooth 64511-14E00
PARTS UNLIMITED
$30.69A worn or damaged sprocket directly impacts your chain engagement, throttle response, and overall drivetrain efficiency. The PARTS UNLIMITED Rear Suzuki Sprocket restores OEM-precise performance with hardened steel construction designed to outlast...K223928- SKU:
- K223928
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 41
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$30.69 -
PARTS UNLIMITED Rear Kawasaki Sprocket - 428 - 49 Tooth 64511-24201
PARTS UNLIMITED
$26.47A worn or damaged rear sprocket directly impacts your bike's acceleration, top-end performance, and chain longevity. This OEM-spec Kawasaki sprocket restores precise engagement and eliminates the drivetrain slack that develops over time. Whether you're...K223801C- SKU:
- K223801C
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$26.47Qty in Cart: 0Quantity:Price:$26.47Subtotal: -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 40 Tooth 41201-KG0-000
PARTS UNLIMITED
$33.87A worn or damaged rear sprocket compromises chain engagement and throttle response, creating safety risks and accelerating wear on your entire drivetrain. This OEM-spec replacement restores precise tooth geometry and optimal chain tension, essential for...K223503A- SKU:
- K223503A
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 40
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$33.87 -
MOOSE RACING Dual Sprocket MSE - Blue - 51-Tooth 1210-251-51-12X
MOOSE RACING
$69.95A rear sprocket that actually keeps pace with your performance demands. The MOOSE RACING Dual Sprocket MSE combines the weight savings of aluminum with the durability of steel, giving you a component that won't fail mid-race or mid-season. Self-cleaning...12101486- SKU:
- 12101486
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BLUE
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 51
$69.95 -
Sunstar Rear Sprocket 50T Blue Honda XR200R 1984-2002 5-359250BL
SUNSTAR SPROCKETS
$78.95A worn or undersized rear sprocket robs your XR200R of critical acceleration and top-end performance. The Sunstar 50T delivers direct power transfer to the rear wheel with aerospace-grade construction that handles sustained trail riding and competitive...12111693- SKU:
- 12111693
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- COLOR/FINISH:
- WORKS/BLUE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
$78.95Qty in Cart: 0Quantity:Price:$78.95Subtotal: -
Sunstar Rear Sprocket 51T Blue 5-359251BL
SUNSTAR SPROCKETS
$78.95A motorcycle's acceleration and top-end performance hinge on efficient power transfer from engine to wheel, and sprocket design directly controls that efficiency. The Sunstar 51T Rear Sprocket delivers measurable gains through aerospace-grade materials...12111694- SKU:
- 12111694
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- WORKS/BLUE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$78.95Qty in Cart: 0Quantity:Price:$78.95Subtotal: -
Sunstar Rear Sprocket 50T for KTM 125-500 1991-2019 Husaberg 125-501 2000-2019 Husqvarna 125-701 2014-2022 5-354750
SUNSTAR SPROCKETS
$88.95A rear sprocket directly impacts your power delivery, acceleration, and overall drivetrain efficiency—making it one of the most critical upgrades for serious riders. The Sunstar 50T combines aerospace-grade materials with precision engineering to...12111338- SKU:
- 12111338
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- WORKS/ORANGE
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$88.95Qty in Cart: 0Quantity:Price:$88.95Subtotal: -
Sunstar Rear Sprocket 47T for KTM 85 SX 2003-2024 2-248147
SUNSTAR SPROCKETS
$46.95The rear sprocket is the final drive component that directly controls your KTM 85 SX's acceleration, top-end speed, and engine load characteristics. A worn or mismatched sprocket forces your engine to work harder, reducing efficiency and throttle...12100619- SKU:
- 12100619
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- COLOR/FINISH:
- NATURAL
- MATERIAL:
- CARBON STEEL
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 47
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
$46.95Qty in Cart: 0Quantity:Price:$46.95Subtotal: -
Sunstar Rear Sprocket 51T Black KTM 2017-2019 5-354751BK
SUNSTAR SPROCKETS
$88.95A rear sprocket is fundamental to your drivetrain's efficiency—it directly impacts acceleration, top-end speed, and chain longevity. The Sunstar 51T delivers measurable gains through precision engineering and material science, not marketing promises. If...12111108- SKU:
- 12111108
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- WORKS/BLACK
- UNITS:
- EACH
$88.95Qty in Cart: 0Quantity:Price:$88.95Subtotal: -
Sunstar Rear Sprocket 51T Black Honda XR600R 1985-1987 5-359251BK
SUNSTAR SPROCKETS
$88.95If you're running a Honda XR600R and want reliable power delivery to the rear wheel, sprocket selection directly impacts your bike's acceleration, top-end speed, and chain longevity. The Sunstar 51T delivers a precision-engineered balance of lightweight...12111124- SKU:
- 12111124
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- CHAIN SIZE:
- 520
- TYPE:
- DRIVE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- WORKS/BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$88.95Qty in Cart: 0Quantity:Price:$88.95Subtotal: -
Sunstar Rear Sprocket 49T Black Kawasaki KX250F 2004-2018 5-361949BK
SUNSTAR SPROCKETS
$78.95A worn or mismatched rear sprocket directly impacts acceleration, top-end performance, and chain longevity. The Sunstar 49T delivers precise gear ratios engineered specifically for your KX250F while reducing unsprung weight through aerospace-grade...12111127- SKU:
- 12111127
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- WORKS/BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$78.95Qty in Cart: 0Quantity:Price:$78.95Subtotal: -
Sunstar Rear Sprocket 45T Yamaha TT225 1986-1987 XT225 1992-2007 2-210445
SUNSTAR SPROCKETS
$49.95A worn or incorrect rear sprocket directly impacts your TT225 or XT225's power delivery, acceleration response, and chain longevity. The Sunstar 45T sprocket restores optimal gear ratios while its precision engineering ensures reliable performance...12100177- SKU:
- 12100177
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- STEEL
- MATERIAL:
- CARBON STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 45
- TYPE:
- REAR
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
MOOSE RACING Dual Sprocket - Red - 49 Tooth 1210-210-49-13X
MOOSE RACING
$69.95A rear sprocket needs to handle extreme torque loads while staying light enough to reduce unsprung weight—and standard aluminum sprockets simply won't survive aggressive riding. The MOOSE RACING Dual Sprocket combines a lightweight 7075 T6 aluminum inner...12101465- SKU:
- 12101465
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- DUAL
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
$69.95 -
Sunstar Rear Sprocket 47T Suzuki GSX-R1000 2009-2025 2-547447
SUNSTAR SPROCKETS
$71.95The Sunstar 47T rear sprocket is engineered to maximize power delivery and chain contact without adding unnecessary weight to your GSX-R1000. Whether you're chasing lap times or refining your acceleration feel, this aerospace-grade aluminum sprocket...5242947- SKU:
- 5242947
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- CHAIN SIZE:
- 428
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- COLOR/FINISH:
- WORKS/GOLD
- MATERIAL:
- 7075-T6 ALUMINUM
$71.95Qty in Cart: 0Quantity:Price:$71.95Subtotal: -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Gold RACD48045GLD
SUPERSPROX
MSRP: $10.95Now: $9.31Was: $10.95A stamped steel sprocket won't cut it if you're serious about chain wear, noise reduction, and long-term durability. The SUPERSPROX Edge Rear Sprocket Insert replaces worn or damaged inserts with precision-engineered replacements that restore proper...12102357- SKU:
- 12102357
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $10.95Now: $9.31Was: $10.95
