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 TwinRing Rear Sprocket 49T 520 Chain Black 1230-520-49GPBK
RENTHAL
$142.50The Renthal TwinRing Rear Sprocket delivers the durability and lightweight performance that serious off-road riders demand. By combining a high-strength aluminum core with a steel outer ring, this sprocket outlasts standard all-aluminum alternatives by...12100807- SKU:
- 12100807
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
$142.50 -
Renthal TwinRing Rear Sprocket 49T Black 520 Chain 1500-520-49GPBK
RENTHAL
$142.50If you're running a 520 chain on your dirt bike, sprocket wear directly impacts throttle response, acceleration, and chain longevity. The Renthal TwinRing 49T combines a lightweight 7075 T-6 aluminum core with a nickel-coated steel outer ring—delivering...12100809- SKU:
- 12100809
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- 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
- TYPE:
- DRIVE
- UNITS:
- EACH
$142.50 -
Renthal Twinring Rear Sprocket 48T Black 2240-520-48GPBK
RENTHAL
$142.50If you're running a 520 chain setup and want a rear sprocket that actually lasts, the Renthal Twinring 48T delivers the durability and weight savings that separate reliable performance from constant replacement cycles. The dual-material construction—7075...12100815- SKU:
- 12100815
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
$142.50 -
Renthal Twinring Rear Sprocket 50T Black 2240-520-50GPBK
RENTHAL
$142.50Rear sprocket selection directly impacts your bike's acceleration, top speed, and chain longevity—making durability and weight critical factors in performance. The Renthal Twinring 50T combines a lightweight 7075 T-6 aluminum core with a hardened steel...12100816- SKU:
- 12100816
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$142.50 -
Renthal TwinRing 49-Tooth Rear Sprocket Blue 1500-520-49GPBU
RENTHAL
$149.98Sprocket wear directly impacts chain life and power delivery—a worn or poorly designed sprocket forces your chain to work harder and fail faster. The Renthal TwinRing 49-Tooth Rear Sprocket eliminates this problem with a hybrid aluminum-steel...12100818- SKU:
- 12100818
- Availability:
- Ships Same Business Day
- Weight:
- 1.76 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- BLUE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
$149.98 -
Renthal Twinring Rear Sprocket 49T Red 520 Chain 1540-520-49GPRD
RENTHAL
$149.98If you're running a 520 chain setup and want a rear sprocket that can actually survive the punishment of off-road riding, the Renthal Twinring 49T is built for longevity. The hybrid aluminum-and-steel construction delivers three times the lifespan of...12100821- SKU:
- 12100821
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
$149.98 -
Renthal TwinRing Rear Sprocket 50T Red 520 Chain 1540-520-50GPRD
RENTHAL
$149.98The Renthal TwinRing Rear Sprocket delivers the lightweight performance and durability demanded by serious riders who refuse to compromise on either metric. Its hybrid construction—pairing a high-strength 7075 T-6 aluminum inner ring with an electro-less...12100822- SKU:
- 12100822
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
$149.98 -
Renthal Twinring Rear Sprocket 48T Orange 2240-520-48GPOR
RENTHAL
$149.98If you're running a 520 chain setup and demand sprocket reliability without excess rotational weight, the Renthal Twinring 48T delivers proven durability in a package that outperforms traditional all-aluminum designs by a significant margin. The...12100983- SKU:
- 12100983
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- COLOR/FINISH:
- ORANGE
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$149.98 -
Renthal Twinring Rear Sprocket 48T Black 1500-520-48GPBK
RENTHAL
$142.50Off-road performance demands a sprocket that can handle extreme conditions without adding unnecessary weight to your drivetrain. The Renthal Twinring rear sprocket combines lightweight 7075 T-6 aluminum with durable electro-less nickel-coated steel to...12101344- SKU:
- 12101344
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
$142.50 -
Renthal Rear Sprocket 48T Orange 520 Chain 224U-520-48GPOR
RENTHAL
$104.61If you're serious about off-road performance, your sprocket choice directly impacts acceleration, weight distribution, and drivetrain longevity. The Renthal 48T rear sprocket delivers a measurable 66% weight reduction over steel while maintaining the...12112474- SKU:
- 12112474
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- TOOTH COUNT:
- 48
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
$104.61 -
Renthal Ultralight Rear Sprocket 38T Orange 491-415-38P-OR
RENTHAL
$104.61Reducing unsprung weight is critical for off-road acceleration and handling, and the Renthal Ultralight Rear Sprocket delivers a measurable 66% weight savings over steel without sacrificing durability. Built from 7075-T6 aluminum and precision...12112490- SKU:
- 12112490
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- TOOTH COUNT:
- 38
- CHAIN SIZE:
- 415
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
$104.61 -
Renthal 48-Tooth Green Rear Sprocket for Kawasaki 112U52048GEGN
RENTHAL
$104.61A worn or undersized rear sprocket limits your acceleration and forces your engine to work harder than necessary. The Renthal 48-Tooth Green Rear Sprocket delivers the strength of steel with a 66% weight reduction, translating directly to quicker...12111345- SKU:
- 12111345
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GREEN
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
$104.61Qty in Cart: 0Quantity:Price:$104.61Subtotal: -
Renthal 51-Tooth Green Rear Sprocket for Kawasaki 112U52051GEGN
RENTHAL
$104.61If you're running a 51-tooth rear sprocket on your Kawasaki, the Renthal green aluminum option cuts weight where it counts—improving throttle response and handling without compromising durability. The 7075-T6 aluminum construction delivers strength...12111348- SKU:
- 12111348
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- GREEN
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$104.61 -
Renthal 51 Tooth Black TwinRing Heavy-Duty Rear Sprocket 1120-520-51GPBK
RENTHAL
$142.50If you're running a 520 chain on your dirt bike or adventure rig, sprocket wear directly impacts your power delivery and acceleration. The Renthal 51 Tooth Black TwinRing combines a lightweight aluminum core with a durable nickel-coated steel outer...12100806- SKU:
- 12100806
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
$142.50 -
Renthal Twinring Rear Sprocket 50-Tooth Green 112052050GPGN
RENTHAL
$149.98A rear sprocket that demands minimal maintenance while delivering extended service life is essential when you're logging serious miles on demanding terrain. The Renthal Twinring combines lightweight aluminum engineering with steel durability—eliminating...12101140- SKU:
- 12101140
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GREEN
- TYPE:
- DRIVE
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
$149.98 -
JT SPROCKETS Steel Rear Sprocket - Graphite - 50 Tooth JTX251.50GR
JT SPROCKETS
$51.80A 50-tooth rear sprocket is your direct path to stronger acceleration and improved low-end torque delivery—critical for both track launches and street performance. The JT Sprockets Steel Rear Sprocket combines heat-treated steel construction with a...12102603- SKU:
- 12102603
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
$51.80 -
JT SPROCKETS Rear Sprocket - Blue - 51 Tooth - Yamaha JTA251.51BLU
JT SPROCKETS
$41.43A worn or mismatched rear sprocket directly impacts your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 51-tooth rear sprocket delivers the precision engineering and durability needed to maintain consistent power...12112580- SKU:
- 12112580
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$41.43 -
JT SPROCKETS Rear Sprocket - Black - 49 Tooth - Yamaha JTA251.49BLK
JT SPROCKETS
$38.88A worn or undersized rear sprocket directly impacts your Yamaha's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 49-tooth rear sprocket delivers the precise gear ratio needed to maximize performance while maintaining...12112648- SKU:
- 12112648
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$38.88 -
MOOSE OFFROAD Steel Rear Sprocket - 49 Tooth 1210-897-49-STL
MOOSE OFFROAD
$29.95A quality rear sprocket is fundamental to your drivetrain's efficiency and longevity. The MOOSE OFFROAD 49-tooth steel sprocket delivers reliable power transfer with precision manufacturing and optimized weight, making it an essential upgrade for riders...12101749- SKU:
- 12101749
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
$29.95 -
MOOSE OFFROAD Steel Rear Sprocket - 46 Tooth 1210-895-46-STL
MOOSE OFFROAD
$29.95A properly sized rear sprocket is critical for optimizing your off-road machine's power delivery and acceleration characteristics. The MOOSE OFFROAD 46-tooth steel sprocket delivers the durability and precision needed for demanding trail conditions,...12101768- SKU:
- 12101768
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
$29.95Qty in Cart: 0Quantity:Price:$29.95Subtotal:
