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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SUPERSPROX Edge Rear Sprocket - Black - 42-Tooth RFA48642BLK
SUPERSPROX
$49.95SUPERSPROX Edge Rear Sprocket Black 42-Tooth RFA48642BLKReduces weight by 5%-15% depending on the model, Cost effective option for mid-range bikes, Must order Edge Disc with Edge Steel Sprocket for OEM sprocket width12102392- SKU:
- 12102392
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MODEL:
- EDGE
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- ZINC
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- LIGHTWEIGHT
- TOOTH COUNT:
- 42
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 48-Tooth - Gold - Beta RST-8000-48-GLD
SUPERSPROX
$119.95SUPERSPROX Stealth Rear Sprocket 48-Tooth Gold Beta RST-8000-48-GLDSupersprox-Stealth gives you longer system life without compromising weight, Steel teeth last 4 times longer than aluminum, Pound-for-pound, the strongest sprocket on the market, The...12102032- SKU:
- 12102032
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- CHAIN SIZE:
- 525
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GOLD
- UNITS:
- EACH
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
SUPERSPROX Stealth Rear Sprocket - 50-Tooth - Red - Beta RST-8000-50-RED
SUPERSPROX
$119.95SUPERSPROX Stealth Rear Sprocket 50-Tooth Red Beta RST-8000-50-REDSupersprox-Stealth gives you longer system life without compromising weight, Steel teeth last 4 times longer than aluminum, Pound-for-pound, the strongest sprocket on the market, The...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
$119.95 -
SUPERSPROX Stealth Rear Sprocket - 51-Tooth - Red - Beta RST-8000-51-RED
SUPERSPROX
$119.95SUPERSPROX Stealth Rear Sprocket 51-Tooth Red Beta RST-8000-51-REDSupersprox-Stealth gives you longer system life without compromising weight, Steel teeth last 4 times longer than aluminum, Pound-for-pound, the strongest sprocket on the market, The...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
$119.95 -
SUPERSPROX Stealth Rear Sprocket - 52-Tooth - Red - Beta RST-8000-52-RED
SUPERSPROX
$119.95SUPERSPROX Stealth Rear Sprocket 52-Tooth Red Beta RST-8000-52-REDSupersprox-Stealth gives you longer system life without compromising weight, Steel teeth last 4 times longer than aluminum, Pound-for-pound, the strongest sprocket on the market, The...12102040- SKU:
- 12102040
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- CHAIN SIZE:
- 525
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- STEALTH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 52
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- COLOR/FINISH:
- RED
- UNITS:
- EACH
$119.95Qty in Cart: 0Quantity:Price:$119.95Subtotal: -
JT SPROCKETS Sprocket - Rear - 42-Tooth JTR822.42
JT SPROCKETS
$32.15JT SPROCKETS Sprocket Rear 42-Tooth JTR822.42Computer 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...JTR82242- SKU:
- JTR82242
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 42
$32.15 -
JT SPROCKETS Sprocket - Rear - Suzuki - 50-Tooth JTR816.50
JT SPROCKETS
$47.30JT SPROCKETS Sprocket Rear Suzuki 50-Tooth JTR816.50Computer-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...JTR81650- SKU:
- JTR81650
- Availability:
- Ships Same Business Day
- Weight:
- 4.10 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- MATERIAL:
- STEEL
$47.30 -
JT SPROCKETS Sprocket - Rear - Suzuki - 48-Tooth JTR816.48
JT SPROCKETS
$46.13JT SPROCKETS Sprocket Rear Suzuki 48-Tooth JTR816.48Computer-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...JTR81648- SKU:
- JTR81648
- Availability:
- Ships Same Business Day
- Weight:
- 3.70 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- UNITS:
- EACH
- MATERIAL:
- STEEL
$46.13 -
JT SPROCKETS Sprocket - Rear - Suzuki - 45-Tooth JTR816.45
JT SPROCKETS
$39.95JT SPROCKETS Sprocket Rear Suzuki 45-Tooth JTR816.45Computer-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...JTR81645- SKU:
- JTR81645
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
$39.95 -
JT SPROCKETS Sprocket - Rear - Suzuki - 43-Tooth JTR816.43
JT SPROCKETS
$39.95JT SPROCKETS Sprocket Rear Suzuki 43-Tooth JTR816.43Computer-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...JTR81643- SKU:
- JTR81643
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- UNITS:
- EACH
- CHAIN SIZE:
- 530
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 43
$39.95 -
JT SPROCKETS Sprocket - Rear - Honda - 49-Tooth JTR217.49
JT SPROCKETS
$24.63JT SPROCKETS Sprocket Rear Honda 49-Tooth JTR217.49Computer 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...JTR21749- SKU:
- JTR21749
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- MOUNTING POSITION:
- REAR
- MODEL:
- HONDA
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 49
$24.63 -
JT SPROCKETS Sprocket - Rear - Honda - 55-Tooth JTR215.55
JT SPROCKETS
$26.20JT SPROCKETS Sprocket Rear Honda 55-Tooth JTR215.55Computer 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...JTR21555- SKU:
- JTR21555
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- MODEL:
- HONDA
- CHAIN SIZE:
- 420
- TOOTH COUNT:
- 55
- UNITS:
- EACH
$26.20 -
JT SPROCKETS Sprocket - Rear - Honda - 51-Tooth JTR215.51
JT SPROCKETS
$22.23JT SPROCKETS Sprocket Rear Honda 51-Tooth JTR215.51Computer 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...JTR21551- SKU:
- JTR21551
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- UNITS:
- EACH
- MODEL:
- HONDA
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$22.23 -
JT SPROCKETS Sprocket - Rear - Honda - 49-Tooth JTR215.49
JT SPROCKETS
$20.58JT SPROCKETS Sprocket Rear Honda 49-Tooth JTR215.49Computer 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...JTR21549- SKU:
- JTR21549
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- MATERIAL:
- STEEL
- CHAIN SIZE:
- 420
- MODEL:
- HONDA
$20.58 -
Sunstar Rear Sprocket 50T Kawasaki KX 250F 2004-2021 Gold 5-361950
SUNSTAR SPROCKETS
$78.95SUNSTAR SPROCKETS Rear Sprocket 50-Tooth Kawasaki Gold 5-361950 Elevate your riding experience with the SUNSTAR 50-Tooth Rear Sprocket, designed specifically for Kawasaki motorcycles. Crafted from aerospace-grade 7075 T-6 aluminum, this sprocket combines...5361950- SKU:
- 5361950
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- WORKS/GOLD
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
$78.95 -
Sunstar 48T Rear Sprocket for Honda CRF250R 2004-2022 Gold 5-355948
SUNSTAR SPROCKETS
$88.95Premium SUNSTAR Rear Sprocket - 48-Tooth for Honda Gold Experience unmatched performance with the SUNSTAR Rear Sprocket, expertly engineered for Honda Gold models. Crafted from aerospace-grade 7075 T-6 aluminum, this sprocket combines lightweight design...5355948- SKU:
- 5355948
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- WORKS/GOLD
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
$88.95Qty in Cart: 0Quantity:Price:$88.95Subtotal: -
JT SPROCKETS Rear Sprocket - Kawasaki - Black - 50 Tooth JTA460.50BLK
JT SPROCKETS
$40.35JT SPROCKETS Rear Sprocket Kawasaki Black 50 Tooth JTA460.50BLKComputer-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,...12112654- SKU:
- 12112654
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR
$40.35 -
JT SPROCKETS Rear Race Sprocket - 45-Tooth JTR897.45SC
JT SPROCKETS
$29.55JT SPROCKETS Rear Race Sprocket 45-Tooth JTR897.45SCComputer 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...12102473- SKU:
- 12102473
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- UNITS:
- EACH
- MATERIAL:
- C49 HIGH CARBON STEEL
$29.55 -
JT SPROCKETS Rear Race Sprocket - 40-Tooth JTR897.40SC
JT SPROCKETS
$29.55JT SPROCKETS Rear Race Sprocket 40-Tooth JTR897.40SCComputer 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...12102472- SKU:
- 12102472
- Availability:
- Ships Same Business Day
- Weight:
- 0.58 LBS
- TOOTH COUNT:
- 40
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- MATERIAL:
- C49 HIGH CARBON STEEL
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
$29.55 -
JT SPROCKETS Rear Race Sprocket - 42-Tooth JTR897.42SC
JT SPROCKETS
$29.55JT SPROCKETS Rear Race Sprocket 42-Tooth JTR897.42SCComputer 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...12102461- SKU:
- 12102461
- Availability:
- Ships Same Business Day
- Weight:
- 0.54 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- C49 HIGH CARBON STEEL
- TOOTH COUNT:
- 42
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$29.55
