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
-
JT SPROCKETS Rear Sprocket - Black - 40-Tooth JTA897.40BLK
JT SPROCKETS
$32.20A rear sprocket is critical to your bike's acceleration, top-end performance, and overall drivetrain efficiency. The JT SPROCKETS 40-tooth rear sprocket gives you the precise gearing you need to optimize power delivery without sacrificing durability...12112677- SKU:
- 12112677
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- REAR
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 40
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
$32.20 -
JT SPROCKETS Rear Sprocket - Black - 45-Tooth JTA897.45BLK
JT SPROCKETS
$35.50A properly sized rear sprocket is essential for optimizing your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT SPROCKETS 45-tooth rear sprocket delivers reliable performance with minimal wear, whether you're fine-tuning...12112679- SKU:
- 12112679
- Availability:
- Ships Same Business Day
- Weight:
- 0.82 LBS
- COLOR/FINISH:
- BLACK
- TOOTH COUNT:
- 45
- TYPE:
- DRIVE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$35.50 -
JT SPROCKETS Rear Sprocket - Black - 47-Tooth JTA897.47BLK
JT SPROCKETS
$37.38A properly sized rear sprocket is critical for maximizing acceleration and top-end performance while maintaining optimal engine RPM across your power band. The JT RaceLite 47-tooth sprocket delivers the durability and precision required for competitive...12112680- SKU:
- 12112680
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- BLACK
- TYPE:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$37.38 -
JT SPROCKETS Rear Sprocket - Black - 48-Tooth JTA897.48BLK
JT SPROCKETS
$37.38A quality rear sprocket is fundamental to your drivetrain's efficiency and longevity. This 48-tooth RaceLite sprocket delivers consistent acceleration response while the premium 7075-T6 aluminum construction resists wear from high-rpm cycling and chain...12112681- SKU:
- 12112681
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- REAR
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
$37.38 -
JT SPROCKETS Rear Sprocket - Black - 49-Tooth JTA897.49BLK
JT SPROCKETS
$38.88A properly matched sprocket is critical to your drivetrain's efficiency and longevity. This 49-tooth rear sprocket delivers the right balance of acceleration and top-end performance for your setup, while the aerospace-grade 7075-T6 aluminum construction...12112682- SKU:
- 12112682
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- REAR
- UNITS:
- EACH
$38.88 -
JT SPROCKETS Rear Sprocket - Black - 51-Tooth JTA897.51BLK
JT SPROCKETS
$41.43A properly matched rear sprocket is critical for maximizing acceleration, top-end speed, and engine efficiency in your drivetrain. The JT SPROCKETS 51-Tooth Rear Sprocket delivers the durability and precision required for both track and street...12112684- SKU:
- 12112684
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- REAR
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$41.43 -
JT SPROCKETS Rear Sprocket - Black - 52-Tooth JTA897.52BLK
JT SPROCKETS
$42.53A properly sized rear sprocket is critical for optimizing your bike's acceleration, top-end speed, and overall power delivery. The JT SPROCKETS 52-tooth rear sprocket delivers the durability and precision you need for consistent performance, whether...12112685- SKU:
- 12112685
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 52
$42.53 -
JT SPROCKETS Rear Sprocket - Orange - 40-Tooth JTA897.40ORG
JT SPROCKETS
$32.20A properly matched rear sprocket is critical for optimizing your bike's acceleration, top-end speed, and overall power delivery. The JT SPROCKETS 40-Tooth RaceLite rear sprocket delivers precision engineering with lightweight 7075-T6 aluminum...12112687- SKU:
- 12112687
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 40
- TYPE:
- REAR
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- STREET
$32.20 -
JT SPROCKETS Rear Sprocket - Orange - 42-Tooth JTA897.42ORG
JT SPROCKETS
$32.20A properly matched rear sprocket is critical for optimizing your bike's acceleration, top speed, and overall drivetrain efficiency. The JT RaceLite 42-tooth rear sprocket delivers reliable performance through precision engineering and durable materials...12112688- SKU:
- 12112688
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 42
- TYPE:
- REAR
$32.20 -
JT SPROCKETS Rear Sprocket - Orange - 45-Tooth JTA897.45ORG
JT SPROCKETS
$35.50A properly matched rear sprocket is critical for optimizing your power delivery and achieving your target RPM range at peak performance. The JT RaceLite 45-tooth rear sprocket delivers the durability and precision that professional racers and serious...12112689- SKU:
- 12112689
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- TOOTH COUNT:
- 45
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$35.50 -
JT SPROCKETS Rear Sprocket - Orange - 47-Tooth JTA897.47ORG
JT SPROCKETS
$37.38A properly matched rear sprocket is essential for optimizing your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT SPROCKETS 47-tooth rear sprocket delivers the durability and precision required for both track and street...12112690- SKU:
- 12112690
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
$37.38 -
JT SPROCKETS Rear Sprocket - Orange - 49-Tooth JTA897.49ORG
JT SPROCKETS
$38.88A properly matched rear sprocket is fundamental to maximizing your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT SPROCKETS 49-tooth rear sprocket delivers the precision engineering and durability required for sustained...12112692- SKU:
- 12112692
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- TYPE:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$38.88 -
JT SPROCKETS Sprocket - Rear - Suzuki - 47 Tooth JTR808.47SC
JT SPROCKETS
$29.55A quality rear sprocket is fundamental to optimizing your Suzuki's acceleration, top-end performance, and drivetrain efficiency. The JT Sprockets 47-tooth rear sprocket delivers the precision engineering and material science required for demanding track...12102517- SKU:
- 12102517
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- MATERIAL:
- C45 HIGH-CARBON STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$29.55 -
JT SPROCKETS Sprocket - Rear - Kawasaki/Suzuki - 40-Tooth JTR499.40
JT SPROCKETS
$34.13A worn or undersized rear sprocket directly impacts your acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 40-tooth rear sprocket delivers computer-optimized tooth geometry and heat-treated C45 steel construction to handle...JTR49940- SKU:
- JTR49940
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TOOTH COUNT:
- 40
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
$34.13 -
JT SPROCKETS Rear Sprocket - 51-Tooth - Honda JTR210.51SC
JT SPROCKETS
$32.98A rear sprocket is critical to your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 51-tooth rear sprocket delivers precision engineering and lightweight construction that reduce rotating mass, translating to...12102438- SKU:
- 12102438
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$32.98 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Green RACD48642GRN
SUPERSPROX
MSRP: $10.95Now: $7.00Was: $10.95Traditional stamped steel sprockets wear unevenly and lose timing precision under sustained track abuse—the SUPERSPROX Edge Rear Sprocket Insert eliminates that liability. Built with CNC-precision engineering and modern materials, this insert delivers...12102361- SKU:
- 12102361
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- COLOR/FINISH:
- GREEN
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- INSERT
- TYPE:
- EDGE REAR
- UNITS:
- EACH
MSRP: $10.95Now: $7.00Was: $10.95 -
On Sale
SUPERSPROX Edge Rear Sprocket Insert - Blue RACD48643BLU
SUPERSPROX
MSRP: $10.95Now: $7.00Was: $10.95Stamped steel sprockets wear unevenly and degrade under sustained load, compromising chain alignment and acceleration response. The SUPERSPROX Edge Rear Sprocket Insert delivers precision-engineered tooth geometry and superior material composition that...12102362- SKU:
- 12102362
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- EDGE REAR
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- PRODUCT NAME:
- INSERT
- RIDING STYLE:
- STREET
MSRP: $10.95Now: $7.00Was: $10.95 -
SUPERSPROX Edge Rear Sprocket Insert - Gold RACD48643GLD
SUPERSPROX
$10.95A worn or damaged rear sprocket compromises both acceleration response and chain longevity. The SUPERSPROX Edge Rear Sprocket Insert upgrades your drivetrain with precision-engineered construction that outlasts traditional stamped steel alternatives,...12102363- SKU:
- 12102363
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- EDGE REAR
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- INSERT
$10.95 -
SUPERSPROX Stealth Rear Sprocket - 50-Tooth - Red - Beta RST-8000-50-RED
SUPERSPROX
$119.95The SUPERSPROX Stealth Rear Sprocket delivers the durability of steel with the weight advantage of aluminum—a critical combination for riders pushing their bikes to the limit. If you're experiencing premature sprocket wear or looking to optimize your...12102038- SKU:
- 12102038
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- COLOR/FINISH:
- STEALTH
- COLOR/FINISH:
- RED
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 525
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 51-Tooth - Red - Beta RST-8000-51-RED
SUPERSPROX
$119.95If you're running a high-displacement sport bike, rear sprocket wear is a maintenance reality—but it doesn't have to cost you performance or weight. The SUPERSPROX Stealth combines steel teeth that outlast aluminum by 4x with a lightweight aluminum core,...12102039- SKU:
- 12102039
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- CHAIN SIZE:
- 525
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- RED
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal:
