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
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JT SPROCKETS Sprocket - Rear - Yamaha - 40-Tooth JTR853.40
JT SPROCKETS
$23.53A properly matched rear sprocket is fundamental to your bike's acceleration, top speed, and overall driveability—and cheap alternatives will cost you in wear rates and reliability. The JT Sprockets 40-tooth rear sprocket delivers the precision...JTR85340- SKU:
- JTR85340
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 40
- PRODUCT NAME:
- SPROCKET
$23.53 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Gold RACD130442GLD
SUPERSPROX
MSRP: $9.95Now: $7.00Was: $9.95Traditional stamped steel sprockets flex under load, robbing you of power transfer efficiency and requiring frequent replacement. The SUPERSPROX Edge Rear Sprocket Insert upgrades your drivetrain with a precision-engineered design that maintains rigidity...12102331- SKU:
- 12102331
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $9.95Now: $7.00Was: $9.95 -
SUPERSPROX Edge Rear Sprocket Insert - Gold RACD130443GLD
SUPERSPROX
$10.95A worn or damaged rear sprocket insert forces you to replace your entire sprocket assembly—an expensive and time-consuming fix. The SUPERSPROX Edge Rear Sprocket Insert upgrades your existing setup with precision-engineered durability, eliminating...12102332- SKU:
- 12102332
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GOLD
- TYPE:
- EDGE REAR
- UNITS:
- EACH
- PRODUCT NAME:
- INSERT
$10.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Gold RACD48043GLD
SUPERSPROX
MSRP: $10.95Now: $7.00Was: $10.95A worn or damaged rear sprocket compromises your drivetrain's efficiency and can introduce noise and vibration throughout your entire system. The SUPERSPROX Edge Rear Sprocket Insert elevates beyond traditional stamped steel with precision engineering...12102355- SKU:
- 12102355
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- EDGE REAR
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- INSERT
MSRP: $10.95Now: $7.00Was: $10.95 -
SUPERSPROX Edge Rear Sprocket Insert - Blue RACD48045BLU
SUPERSPROX
$10.95A worn or damaged rear sprocket insert compromises your chain alignment and acceleration response—two non-negotiables for track performance or reliable street duty. The SUPERSPROX Edge Rear Sprocket Insert replaces the traditional stamped steel insert...12102356- SKU:
- 12102356
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLUE
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
- UNITS:
- EACH
$10.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Green RACD48641GRN
SUPERSPROX
MSRP: $10.95Now: $7.00Was: $10.95Traditional stamped steel sprockets flex under load and wear unevenly, robbing you of chain longevity and power delivery consistency. The SUPERSPROX Edge Rear Sprocket Insert upgrades your drivetrain with precision-engineered construction that maintains...12102359- SKU:
- 12102359
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- EDGE REAR
- UNITS:
- EACH
- COLOR/FINISH:
- GREEN
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- INSERT
MSRP: $10.95Now: $7.00Was: $10.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Gold RACD48642GLD
SUPERSPROX
MSRP: $10.95Now: $7.00Was: $10.95A worn or damaged rear sprocket directly impacts your bike's acceleration, top-end performance, and overall drivetrain reliability. The SUPERSPROX Edge Rear Sprocket Insert replaces the stamped steel construction found on OEM parts with...12102360- SKU:
- 12102360
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
- RIDING STYLE:
- STREET
MSRP: $10.95Now: $7.00Was: $10.95 -
SUPERSPROX Steel Rear Sprocket - 51-Tooth RFE-245-51-BLK
SUPERSPROX
$64.95A rear sprocket is critical to your drivetrain's efficiency, acceleration, and overall performance. This SUPERSPROX steel sprocket delivers race-proven durability without the weight penalty of inferior alternatives, making it ideal for riders who demand...12101894- SKU:
- 12101894
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$64.95 -
SUPERSPROX Steel Rear Sprocket - 52-Tooth RFE-245-52-BLK
SUPERSPROX
$64.95A worn or mismatched rear sprocket kills acceleration, increases drivetrain wear, and forces your engine to work harder than necessary. The SUPERSPROX 52-tooth steel sprocket delivers precise engagement, extended component life, and measurable...12101895- SKU:
- 12101895
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MATERIAL:
- STEEL
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
SUPERSPROX Steel Rear Sprocket - 45-Tooth RFE-301-45-BLK
SUPERSPROX
$49.95A worn or mismatched sprocket kills acceleration response and accelerates wear on your entire drivetrain. The SUPERSPROX 45-Tooth Steel Rear Sprocket delivers the precision engineering and durability needed for consistent performance across street and...12101896- SKU:
- 12101896
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 45
- TYPE:
- REAR
$49.95 -
SUPERSPROX Stealth Rear Sprocket - 50-Tooth - Gold - Honda RST-210-50-GLD
SUPERSPROX
$119.95Rear sprocket wear can silently rob you of power delivery and shift quality—until sudden failure leaves you stranded. The SUPERSPROX Stealth 50-Tooth Sprocket solves this with a hybrid steel-tooth and aluminum-core design that delivers 4x the lifespan of...12101971- SKU:
- 12101971
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- COLOR/FINISH:
- GOLD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Rear Sprocket - Blue - Yamaha - 51-Tooth RAL-245-51 BLU
SUPERSPROX
$69.95A lightweight sprocket directly impacts your acceleration and overall drivetrain efficiency—especially critical if you're running a tight power-to-weight ratio. SUPERSPROX's 7075-T6 aluminum construction delivers the strength of heavier steel...12111935- SKU:
- 12111935
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLUE
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- STREET
- MODEL:
- ALUMINUM
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- RIDING STYLE:
- OFF-ROAD
$69.95 -
SUPERSPROX Stealth Rear Sprocket - 52-Tooth - Gold - Yamaha RST-245-52-GLD
SUPERSPROX
$119.95If you're running high-mileage track sessions or pushing your Yamaha RST-245 hard, sprocket wear becomes a real maintenance headache. The SUPERSPROX Stealth rear sprocket solves this with hardened steel teeth that outlast aluminum by 4x, keeping you on...12101984- SKU:
- 12101984
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- UNITS:
- EACH
- COLOR/FINISH:
- GOLD
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
$119.95 -
MOOSE RACING Dual Sprocket - Silver - 48 Tooth 1210-251-48-11X
MOOSE RACING
$69.95A quality rear sprocket is foundational to reliable power transfer and longevity—especially in demanding racing or off-road conditions. The MOOSE RACING Dual Sprocket combines lightweight aluminum construction with steel durability, giving you the weight...12101476- SKU:
- 12101476
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
$69.95 -
MOOSE RACING Dual Sprocket - Black - 51 Tooth 1210-460-51-10X
MOOSE RACING
$69.95If you're running a dual-sprocket setup, you need a component that balances weight savings with durability under load—and that's exactly what the MOOSE RACING 51-tooth delivers. The hybrid construction combines a 7075 T6 aluminum inner ring with a...12101496- SKU:
- 12101496
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- HEAVY-DUTY STEEL OUTER RING
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM INNER RING
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- STYLE:
- DUAL
- TOOTH COUNT:
- 51
$69.95Qty in Cart: 0Quantity:Price:$69.95Subtotal: -
JT SPROCKETS Sprocket - Rear - Honda - 50-Tooth JTR1204.50
JT SPROCKETS
$25.03Computer designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...JTR120450- SKU:
- JTR120450
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- MODEL:
- HONDA
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 50
$25.03 -
JT SPROCKETS Rear Sprocket - Honda - Black - 47 Tooth JTA210.47BLK
JT SPROCKETS
$37.38Computer-designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...12112567- SKU:
- 12112567
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BLACK
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 47
$37.38 -
JT SPROCKETS Sprocket - Rear - Kawasaki/Suzuki - 49-Tooth JTR462.49
JT SPROCKETS
$24.98Computer designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...JTR46249- SKU:
- JTR46249
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
$24.98 -
JT SPROCKETS Rear Sprocket - Honda - Red - 48 Tooth JTA210.48RED
JT SPROCKETS
$37.38Computer-designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...12112569- SKU:
- 12112569
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TOOTH COUNT:
- 48
- TYPE:
- REAR
- COLOR/FINISH:
- RED
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
$37.38 -
JT SPROCKETS Rear Sprocket - Honda - Red - 49 Tooth JTA210.49RED
JT SPROCKETS
$38.88Computer-designed to achieve ultimate strength at minimum weight, JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value, Every sprocket meets or exceeds the highest possible quality...12112570- SKU:
- 12112570
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- UNITS:
- EACH
$38.88
