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
-
Renthal Ultralight Rear Sprocket 52T Black 123U-520-52GYBK
RENTHAL
$99.82A lightweight rear sprocket directly improves throttle response and acceleration while reducing unsprung weight that impacts handling and braking performance. The Renthal Ultralight's 7075-T6 aluminum construction cuts mass by roughly two-thirds compared...12110024- SKU:
- 12110024
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- 7075-T6 ALUMINUM
- TOOTH COUNT:
- 52
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
$99.82 -
Renthal 49-Tooth Black Rear Sprocket for Yamaha 150U-520-49GBBK
RENTHAL
$99.82If you're running a 520 chain on your Yamaha, sprocket wear directly impacts acceleration, chain longevity, and overall drivetrain efficiency. The Renthal 49-Tooth Rear Sprocket delivers the durability and lightweight performance you need to maintain...12110026- SKU:
- 12110026
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$99.82Qty in Cart: 0Quantity:Price:$99.82Subtotal: -
Renthal Rear Sprocket 51T Black 520 Chain 150U-520-51GBBK
RENTHAL
$99.82If you're running a 51-tooth rear sprocket on your Yamaha, upgrading to Renthal's 7075-T6 aluminum design cuts unsprung weight while maintaining the durability you need for consistent power delivery. The CNC-machined self-cleaning grooves eliminate mud...12110028- SKU:
- 12110028
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$99.82 -
Renthal Black 52-Tooth Rear Sprocket for Yamaha 150U-520-52GBBK
RENTHAL
$99.82A lightweight rear sprocket directly impacts your bike's acceleration, handling, and overall responsiveness—especially critical in competitive racing where every pound matters. The Renthal 52-Tooth Rear Sprocket sheds approximately 66% of the weight of...12110029- SKU:
- 12110029
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$99.82 -
Renthal 50-Tooth Black Aluminum Rear Sprocket for Honda 154U-520-50GRBK
RENTHAL
$99.82If you're running a 50-tooth rear sprocket on your Honda, you need one that won't compromise acceleration or add unnecessary rotating mass. The Renthal 50-Tooth Black Aluminum Rear Sprocket delivers the lightweight performance you demand while its...12110032- SKU:
- 12110032
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$99.82 -
Renthal Ultralight Rear Sprocket 52T 520 Chain Black 154U-520-52GRBK
RENTHAL
$99.82Rotational mass directly impacts acceleration and chassis responsiveness—this is where a lightweight rear sprocket makes a measurable difference. The Renthal Ultralight 52T reduces unsprung weight by approximately 66% compared to steel alternatives,...12110034- SKU:
- 12110034
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- 7075-T6 ALUMINUM
- TOOTH COUNT:
- 52
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
$99.82 -
Renthal 48-Tooth Black Rear Sprocket for KTM 224U-520-48GPBK
RENTHAL
$99.82If you're running a 520 chain on your KTM, sprocket wear directly impacts throttle response and chain longevity. The Renthal 48-tooth rear sprocket replaces stock with a lightweight 7075-T6 aluminum design that sheds weight while resisting the mud and...12110045- SKU:
- 12110045
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
$99.82 -
Renthal 49-Tooth Rear Sprocket Black 520 Chain KTM 224U-520-49GPBK
RENTHAL
$99.82If you're running a 49-tooth rear sprocket on your KTM, you need a component engineered for the demands of motocross and enduro racing—not a compromise. The Renthal 49-Tooth Rear Sprocket delivers the durability and lightweight performance that serious...12110046- SKU:
- 12110046
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- UNITS:
- EACH
$99.82Qty in Cart: 0Quantity:Price:$99.82Subtotal: -
Renthal 50-Tooth Black Rear Sprocket for KTM 224U-520-50GPBK
RENTHAL
$99.82Shave unsprung weight from your KTM without sacrificing durability—the Renthal 50-Tooth Rear Sprocket delivers 66% weight savings compared to steel while maintaining the strength you need for aggressive riding conditions. Self-cleaning mud grooves keep...12110047- SKU:
- 12110047
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$99.82 -
Renthal Ultralight Rear Sprocket 52T Black 224U-520-52GPBK
RENTHAL
$99.82If you're running a KTM off-road machine, the stock rear sprocket is likely adding unnecessary weight while collecting mud buildup that accelerates wear. The Renthal Ultralight 52T delivers a significant weight reduction—66% lighter than steel—without...12110049- SKU:
- 12110049
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- UNITS:
- EACH
- TYPE:
- DRIVE
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$99.82 -
Renthal 45-Tooth 520 Rear Sprocket for KTM 224U-520-45GPSI
RENTHAL
$99.82Shaving 66% of the weight off your rear sprocket has a direct impact on acceleration, handling, and your ability to control the bike under load. The Renthal 45-tooth sprocket cuts unsprung mass without compromising durability, letting you feel the...12110078- SKU:
- 12110078
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
$99.82Qty in Cart: 0Quantity:Price:$99.82Subtotal: -
Renthal Ultralight Rear Sprocket 46T 520 Chain KTM Husqvarna Husaberg 224U-520-46GPSI
RENTHAL
$99.82Unsprung weight directly impacts acceleration, handling, and how quickly your bike responds to throttle input—and this Renthal ultralight sprocket cuts that weight by 66% compared to steel alternatives. Off-road performance demands components that can...12110079- SKU:
- 12110079
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$99.82 -
Renthal 50-Tooth Rear Sprocket for KTM 65 SX 192U-420-50GPSI
RENTHAL
$99.82A lightweight rear sprocket is one of the most effective ways to improve acceleration and throttle response on your KTM 65 SX—and this Renthal 50-tooth sprocket delivers exactly that. By cutting rotational mass by roughly two-thirds compared to steel...12110087- SKU:
- 12110087
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$99.82 -
Renthal 47-Tooth Rear Sprocket for KTM 85 SX 17/14 85 SX 19/16 105 SX 441U-428-47GPSI
RENTHAL
$99.82If you're running KTM 85 SX or 105 SX, the stock rear sprocket is costing you performance. The Renthal 47-tooth sprocket cuts unsprung weight by 66% compared to steel alternatives, directly improving acceleration and mid-range handling on technical...12110089- SKU:
- 12110089
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- MATERIAL:
- 7075-T6 ALUMINUM
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$99.82 -
Renthal 50-Tooth Rear Sprocket for KTM 85 SX 17/14 85 SX 19/16 105 SX 441U-428-50GPSI
RENTHAL
$99.82When you're pushing hard on the track or battling through muddy terrain, every gram counts. The Renthal 50-Tooth Rear Sprocket cuts weight by 66% compared to steel without compromising durability, giving you quicker acceleration and sharper handling...12110092- SKU:
- 12110092
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$99.82 -
Renthal 53-Tooth Rear Sprocket for Honda 154U-520-53GRBK
RENTHAL
$99.82If you're running a 520 chain on your Honda, a lightweight rear sprocket is one of the quickest ways to improve acceleration and reduce rotational mass without breaking the bank. The Renthal 53-tooth sprocket cuts approximately 66% of the weight compared...12110179- SKU:
- 12110179
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 53
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
$99.82 -
Renthal 53-Tooth Rear Sprocket for Honda Red 154U-520-53GRRD
RENTHAL
$104.61If you're running a 53-tooth setup, you know every gram of unsprung weight matters for acceleration and chassis response. The Renthal aluminum rear sprocket delivers that advantage while maintaining the durability required for serious riding—whether...12110180- SKU:
- 12110180
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- TOOTH COUNT:
- 53
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$104.61 -
Renthal 47-Tooth Black Rear Sprocket for Kawasaki 121U-428-47GPBK
RENTHAL
$99.82If you're running a Kawasaki off-road machine, sprocket selection directly impacts acceleration, chain wear, and overall drivetrain reliability. The Renthal 47-tooth rear sprocket cuts unsprung weight by two-thirds compared to steel alternatives,...12110281- SKU:
- 12110281
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
$99.82 -
Renthal Black 48-Tooth Rear Sprocket for 428 Chain 121U-428-48GPBK
RENTHAL
$99.82If you're running a 428 chain on your Kawasaki, upgrading to a lightweight aluminum sprocket directly improves throttle response and reduces unsprung weight at the rear wheel—translating to faster acceleration and better handling. The Renthal 48-tooth in...12110282- SKU:
- 12110282
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
$99.82 -
Renthal 47-Tooth Blue Rear Sprocket for Yamaha YZ85 121U-428-47GPBU
RENTHAL
$104.61If you're running a YZ85 in competitive or recreational dirt bike racing, sprocket weight directly impacts your power-to-weight ratio and throttle response. The Renthal 47-Tooth Rear Sprocket shaves off unnecessary mass while maintaining the durability...12110285- SKU:
- 12110285
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
$104.61
