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 Honda Sprocket - 420 - 48 Tooth 41201-329-000
PARTS UNLIMITED
$47.89A worn or damaged rear sprocket will degrade throttle response, create chain wear, and compromise power delivery to your rear wheel. This OEM-spec replacement restores factory performance and ensures precise engagement with your chain for smooth,...K223558- SKU:
- K223558
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$47.89 -
PARTS UNLIMITED Rear Honda Sprocket - 428 - 44 Tooth 41201-110-670
PARTS UNLIMITED
$26.47A worn or damaged sprocket directly impacts chain wear, power delivery, and fuel efficiency—making it one of the highest-ROI maintenance items on your Honda. This OEM-specification rear sprocket restores factory performance characteristics without...K223566- SKU:
- K223566
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 44
- TYPE:
- DRIVE
$26.47 -
PARTS UNLIMITED Rear Honda Sprocket - 428 - 45 Tooth 41201-053-020
PARTS UNLIMITED
$25.45A worn or damaged rear sprocket will degrade acceleration response and create unnecessary drivetrain slack—compromising both performance and chain longevity. This OEM-spec replacement sprocket restores precise engagement and eliminates play, ensuring...K223567- SKU:
- K223567
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 45
- TYPE:
- DRIVE
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
$25.45 -
PARTS UNLIMITED Rear Honda Sprocket - 420 - 36 Tooth 41200-152-000
PARTS UNLIMITED
$27.49A worn or damaged rear sprocket directly impacts your Honda's acceleration, chain wear, and overall drivetrain efficiency. This OEM-spec replacement ensures precise engagement with your chain while maintaining factory performance characteristics. Whether...K223584- SKU:
- K223584
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 36
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
$27.49 -
PARTS UNLIMITED Rear Honda Sprocket - 420 - 46 Tooth 41201-153-000
PARTS UNLIMITED
$34.63A worn or damaged rear sprocket will kill your acceleration and compromise your entire drivetrain's efficiency. This OEM-spec replacement restores precise power transfer to your rear wheel, ensuring crisp engagement and predictable chain performance...K223585- SKU:
- K223585
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- NATURAL
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 46
- TYPE:
- DRIVE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$34.63 -
PARTS UNLIMITED Rear Honda Sprocket - 428 - 49 Tooth 41201-364-790
PARTS UNLIMITED
$29.53A worn or damaged sprocket directly impacts your Honda's acceleration, top-end performance, and overall drivetrain efficiency. This OEM-spec rear sprocket restores precise chain engagement and eliminates the performance loss that comes with worn teeth or...K223588- SKU:
- K223588
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$29.53 -
PARTS UNLIMITED Rear Yamaha Sprocket - 482 - 45 Tooth 248-25445-10
PARTS UNLIMITED
$24.43A worn or damaged rear sprocket directly compromises your acceleration, top-end speed, and overall drivetrain efficiency. This PARTS UNLIMITED rear sprocket restores OEM performance with precision-machined teeth and splines that ensure perfect chain...K223602- SKU:
- K223602
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
- UNITS:
- EACH
$24.43 -
PARTS UNLIMITED Rear Yamaha Sprocket - 428 - 44 Tooth 4V1-25444-10
PARTS UNLIMITED
$27.49A worn or damaged rear sprocket kills acceleration and compromises chain engagement, directly impacting your bike's performance and reliability. This OEM-specification sprocket restores precise tooth geometry and spline fit, ensuring consistent power...K223602L- SKU:
- K223602L
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 428
- TYPE:
- DRIVE
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 44
$27.49Qty in Cart: 0Quantity:Price:$27.49Subtotal: -
PARTS UNLIMITED Rear Yamaha Sprocket - 428 - 50 Tooth 15A-25450-10
PARTS UNLIMITED
$27.49A worn or damaged rear sprocket compromises your entire drivetrain's efficiency, causing power loss and accelerated wear on your chain and transmission. The PARTS UNLIMITED Rear Yamaha Sprocket delivers OEM-specification performance with...K223603J- SKU:
- K223603J
- Availability:
- Ships Same Business Day
- Weight:
- 2.56 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- TYPE:
- DRIVE
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 428
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$27.49Qty in Cart: 0Quantity:Price:$27.49Subtotal: -
PARTS UNLIMITED Rear Yamaha Sprocket - 520 - 38 Tooth 5Y1-25438-20
PARTS UNLIMITED
$29.53Your rear sprocket is critical to power delivery and acceleration—worn or damaged teeth directly impact throttle response and chain wear. This OEM-spec replacement restores precise engagement with your chain while eliminating play that degrades...K223603N- SKU:
- K223603N
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- TOOTH COUNT:
- 38
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ATV
- TYPE:
- DRIVE
- UNITS:
- EACH
$29.53 -
PARTS UNLIMITED Rear Suzuki Sprocket - 428 - 48 Tooth 64511-20920-48
PARTS UNLIMITED
$25.45A worn or damaged rear sprocket compromises your power delivery, accelerates chain wear, and can leave you stranded. This OEM-spec replacement restores precise engagement with your chain and delivers the reliable performance your Suzuki demands. Whether...K223801W- SKU:
- K223801W
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
$25.45 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 47 Tooth 64511-40285-47T
PARTS UNLIMITED
$41.77A worn or damaged rear sprocket directly impacts your bike's acceleration, top speed, and overall drivetrain efficiency—making this a critical wear item for any serious rider. This OEM-spec replacement ensures perfect chain alignment and engagement,...K223802V- SKU:
- K223802V
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
$41.77 -
PARTS UNLIMITED Rear Suzuki Sprocket - 428 - 47 Tooth 64511-20920-47
PARTS UNLIMITED
$27.49A worn or damaged rear sprocket directly impacts your bike's acceleration, top-end performance, and overall drivetrain efficiency. This OEM-specification sprocket ensures you maintain precise power delivery and chain compatibility without compromise...K223803S- SKU:
- K223803S
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$27.49 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 39 Tooth 64511-29000
PARTS UNLIMITED
$32.59A worn or damaged rear sprocket directly compromises your power delivery and acceleration precision—critical factors whether you're chasing lap times or maintaining consistent performance on the street. This OEM-specification replacement ensures your...K223811- SKU:
- K223811
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 39
- MATERIAL:
- STEEL
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
$32.59Qty in Cart: 0Quantity:Price:$32.59Subtotal: -
PARTS UNLIMITED Rear Suzuki Sprocket - 525 - 40 Tooth 64511-30700
PARTS UNLIMITED
$41.77A worn or damaged sprocket directly impacts your chain engagement, acceleration response, and overall drivetrain efficiency. The PARTS UNLIMITED Rear Suzuki Sprocket restores OEM-spec performance with precision-machined teeth and hardened steel...K223816- SKU:
- K223816
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- TOOTH COUNT:
- 40
- CHAIN SIZE:
- 525
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$41.77 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 50 Tooth 64511-41131
PARTS UNLIMITED
$51.97A worn or damaged rear sprocket compromises your chain drive efficiency and can leave you stranded mid-race or ride. This OEM-spec replacement sprocket restores precise engagement with your chain, ensuring consistent power delivery and eliminating the...K223842- SKU:
- K223842
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$51.97 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 45 Tooth 41201-KCY-67
PARTS UNLIMITED
$36.67A worn or damaged rear sprocket directly compromises your chain engagement, power delivery, and overall drivetrain efficiency. This OEM-spec PARTS UNLIMITED rear sprocket ensures precise tooth geometry and spline fitment, eliminating slack and maximizing...K223902- SKU:
- K223902
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
$36.67 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 45 Tooth 41201-MY6-67
PARTS UNLIMITED
$31.57A worn or damaged rear sprocket compromises power delivery, increases drivetrain wear, and can leave you stranded mid-race or ride. This OEM-spec replacement restores precise chain engagement and efficient power transfer, ensuring consistent acceleration...K223911- SKU:
- K223911
- Availability:
- Ships Same Business Day
- Weight:
- 2.28 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- NATURAL
- TYPE:
- DRIVE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
$31.57 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 44 Tooth 64511-08D50
PARTS UNLIMITED
$30.55A worn or damaged rear sprocket compromises your chain drive efficiency and can lead to premature wear across your entire drivetrain. The PARTS UNLIMITED Rear Suzuki Sprocket delivers OEM-matched performance and durability, ensuring precise engagement...K223932- SKU:
- K223932
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 44
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
$30.55 -
PARTS UNLIMITED Rear Yamaha Sprocket - 520 - 44 Tooth 214-25444-10
PARTS UNLIMITED
$44.83A worn or damaged sprocket directly undermines your bike's acceleration, top-end performance, and chain longevity. The PARTS UNLIMITED Rear Yamaha Sprocket delivers OEM-spec durability and precision fitment, ensuring smooth power delivery without the...K223621- SKU:
- K223621
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 44
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$44.83
