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
-
SUPERSPROX Stealth Rear Sprocket - 46-Tooth - Gold - Kawasaki RST-460-46-GLD
SUPERSPROX
$119.95If you're running a high-displacement Kawasaki and want sprocket longevity without the weight penalty, the SUPERSPROX Stealth delivers a compelling engineering solution. Steel teeth dramatically extend service life compared to aluminum alternatives,...12101995- SKU:
- 12101995
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- TOOTH COUNT:
- 46
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- GOLD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
$119.95 -
SUPERSPROX Stealth Rear Sprocket - 47-Tooth - Gold - Kawasaki RST-460-47-GLD
SUPERSPROX
$119.95If you're running a high-displacement bike and tired of replacing sprockets every season, the SUPERSPROX Stealth rear sprocket delivers the durability of steel with the weight savings of aluminum. The forged steel teeth outlast aluminum by 4x, while the...12101996- SKU:
- 12101996
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- COLOR/FINISH:
- GOLD
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 47
$119.95 -
SUPERSPROX Stealth Rear Sprocket - 49-Tooth - Red - Beta RST-8000-49-RED
SUPERSPROX
$119.95If you're running a high-displacement bike and tired of replacing worn sprockets every season, the SUPERSPROX Stealth delivers the durability you need without the weight penalty. Steel teeth outlast aluminum by 4x, while the hybrid construction keeps...12102037- SKU:
- 12102037
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 525
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- COLOR/FINISH:
- RED
- UNITS:
- EACH
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 47-Tooth - Gold - Kawasaki RST-808-47-GLD
SUPERSPROX
$119.95If you're running a high-displacement Kawasaki and want sprocket durability that actually matches your riding intensity, the SUPERSPROX Stealth rear sprocket solves the wear problem that stock and aluminum units can't. Steel teeth engineered to outlast...12102042- SKU:
- 12102042
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 47
- COLOR/FINISH:
- GOLD
- UNITS:
- EACH
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 50-Tooth - Gold - Kawasaki RST-808-50-GLD
SUPERSPROX
$119.95If you're running a high-displacement Kawasaki and want sprocket longevity without the weight penalty, the SUPERSPROX Stealth delivers steel-tooth durability in an aluminum-core package. You get four times the wear life of conventional aluminum sprockets...12102045- SKU:
- 12102045
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- COLOR/FINISH:
- GOLD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- STEALTH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
$119.95 -
SUPERSPROX Stealth Rear Sprocket - 49-Tooth - Gold - Husaberg RST-990-49-GLD
SUPERSPROX
$119.95If you're running a high-displacement bike and demand sprocket durability without sacrificing weight, the SUPERSPROX Stealth 49-tooth delivers the hybrid performance you need. Steel teeth engineered to last four times longer than aluminum alternatives...12102057- SKU:
- 12102057
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GOLD
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$119.95 -
SUPERSPROX Rear Sprocket - Red - Honda - 52-Tooth RAL21052RED
SUPERSPROX
$74.95If you're serious about maximizing chain and sprocket lifespan while shaving unnecessary weight from your bike, a premium aluminum sprocket is non-negotiable. The SUPERSPROX 52-tooth rear sprocket delivers the strength of billet construction without the...12111927- SKU:
- 12111927
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- MODEL:
- ALUMINUM
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
$74.95 -
SUPERSPROX Rear Sprocket - Black - Honda - 37-Tooth RAL21437BLK
SUPERSPROX
$64.95A lightweight rear sprocket is one of the fastest ways to improve your Honda's acceleration and throttle response without touching the engine. The SUPERSPROX 37-tooth sprocket cuts rotating mass while maintaining the strength needed for aggressive riding...12111931- SKU:
- 12111931
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- CHAIN SIZE:
- 420
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 37
- MODEL:
- ALUMINUM
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
$64.95 -
SUPERSPROX Rear Sprocket - Black - Kawasaki - 49-Tooth RAL-808-49-BLK
SUPERSPROX
$69.95A worn or mismatched rear sprocket compromises acceleration, top-end performance, and chain longevity. The SUPERSPROX 49-tooth rear sprocket delivers measurable gains in durability and efficiency through precision engineering and premium materials,...12111949- SKU:
- 12111949
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- MODEL:
- ALUMINUM
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
$69.95 -
SUPERSPROX Rear Sprocket - Orange - KTM/Husqvarna - 48-Tooth RAL-990-48-ORG
SUPERSPROX
$69.95A rear sprocket is one of the most critical drivetrain components affecting acceleration, top speed, and chain longevity. The SUPERSPROX 48-tooth orange sprocket delivers lightweight performance without compromising durability, thanks to its 7075-T6...12111954- SKU:
- 12111954
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- COLOR/FINISH:
- ORANGE
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MODEL:
- ALUMINUM
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
SUPERSPROX Rear Sprocket - Black - Suzuki - 47-Tooth RAL-998-47-BLK
SUPERSPROX
$64.95A rear sprocket is one of the highest-wear components on your drivetrain, directly impacting acceleration, top-end speed, and chain longevity. The SUPERSPROX 47-tooth aluminum sprocket delivers a measurable reduction in unsprung weight while maintaining...12111961- SKU:
- 12111961
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- BLACK
- MODEL:
- ALUMINUM
- CHAIN SIZE:
- 420
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
Renthal TwinRing Rear Sprocket 48T Silver 520 Chain 1540-520-48GPSI
RENTHAL
$142.50If you're running a 520 chain setup and want a rear sprocket that actually lasts, the Renthal TwinRing 48T delivers. This isn't just another aluminum sprocket—the hybrid construction pairs a lightweight 7075 T-6 aluminum core with an electro-less...12100231- SKU:
- 12100231
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
$142.50Qty in Cart: 0Quantity:Price:$142.50Subtotal: -
Renthal Twinring Rear Sprocket 49T Silver 520 Chain 1540-520-49GPSI
RENTHAL
$142.50The Renthal Twinring Rear Sprocket delivers the durability and lightweight performance you need to push harder in off-road conditions without sacrificing chain longevity. Its hybrid aluminum-and-steel construction outlasts standard aluminum sprockets by...12100232- SKU:
- 12100232
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$142.50Qty in Cart: 0Quantity:Price:$142.50Subtotal: -
Renthal TwinRing Rear Sprocket 52T Silver 1540-520-52GPSI
RENTHAL
$142.50If you're pushing your off-road bike to its limits, sprocket durability and weight savings directly impact acceleration, handling, and chain longevity. The Renthal TwinRing rear sprocket combines a high-strength 7075 T-6 aluminum inner ring with an...12100235- SKU:
- 12100235
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
$142.50 -
Renthal TwinRing Rear Sprocket 51T Silver 1500-520-51GPSI
RENTHAL
$142.50If you're running a 520 chain on your off-road machine, sprocket wear is inevitable—but premature failure isn't. The Renthal TwinRing 51T combines a lightweight 7075 T-6 aluminum core with a durable electro-less nickel-coated steel ring, delivering three...12100239- SKU:
- 12100239
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
$142.50Qty in Cart: 0Quantity:Price:$142.50Subtotal: -
Renthal Twinring Rear Sprocket 49T Silver 2240-520-49GPSI
RENTHAL
$142.50If you're running a 520 chain setup and demand sprocket longevity without sacrificing weight, the Renthal Twinring 49T delivers the durability of steel with the agility of aluminum. The dual-ring construction outlasts conventional all-aluminum sprockets...12100252- SKU:
- 12100252
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$142.50 -
Renthal TwinRing Rear Sprocket 51T Silver 520 Chain 2240-520-51GPSI
RENTHAL
$142.50Sprocket wear is one of the fastest paths to drivetrain failure, especially under racing conditions or aggressive riding. The Renthal TwinRing 51T combines a lightweight 7075 T-6 aluminum core with a durable nickel-coated steel outer ring to give you...12100254- SKU:
- 12100254
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
$142.50 -
Renthal Twinring 50-Tooth Rear Sprocket Black 1230-520-50GPBK
RENTHAL
$142.50If you're running a 520 chain setup and demand sprocket durability without sacrificing weight, the Renthal Twinring 50-tooth rear sprocket delivers the engineering to back it up. The hybrid construction—7075 T-6 aluminum inner ring bonded with an...12100808- SKU:
- 12100808
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
$142.50 -
Renthal TwinRing Rear Sprocket 50T Black 1500-520-50GPBK
RENTHAL
$142.50If you're running a demanding off-road program, your rear sprocket takes a beating—mud, impacts, and constant chain stress test durability limits fast. The Renthal TwinRing 50T combines a lightweight aluminum core with a hardened steel outer ring,...12100810- SKU:
- 12100810
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$142.50 -
Renthal TwinRing Rear Sprocket 48T Black 520 Pitch 1540-520-48GPBK
RENTHAL
$142.50If you're running a 520 chain and demand sprocket durability that won't compromise your bike's weight, the Renthal TwinRing rear sprocket delivers the performance advantage you need. The dual-ring construction—pairing a lightweight 7075 T-6 aluminum...12100811- SKU:
- 12100811
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$142.50
