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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On Sale
Renthal TwinRing Rear Sprocket 50T Blue 520 Chain 2240-520-50GPBU
RENTHAL
MSRP: $149.98Now: $127.00Was: $149.98The RENTHAL Twinring™ Rear Sprocket combines advanced materials and engineering to deliver exceptional performance and durability. Featuring a high-strength Ultralight™ 7075 T-6 aluminum inner ring and an electro-less nickel-coated steel outer ring, this...12101137- SKU:
- 12101137
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- BLUE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
MSRP: $149.98Now: $127.00Was: $149.98 -
On Sale
Renthal Twinring Rear Sprocket 49-Tooth Green 520 Chain 112052049GPGN
RENTHAL
MSRP: $149.98Now: $127.00Was: $149.98The RENTHAL Twinring™ Rear Sprocket combines advanced materials and engineering to deliver exceptional durability and lightweight performance. Featuring a high-strength Ultralight™ 7075 T-6 aluminum inner ring and an electro-less nickel-coated steel...12101139- SKU:
- 12101139
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- GREEN
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
MSRP: $149.98Now: $127.00Was: $149.98 -
On Sale
Renthal Twinring Rear Sprocket 51T Green 112052051GPGN
RENTHAL
MSRP: $149.98Now: $127.00Was: $149.98The RENTHAL Twinring™ Rear Sprocket combines the lightweight properties of Ultralight™ 7075 T-6 aluminum with the durability of electro-less nickel coated steel, offering enhanced performance and longevity. Its innovative design features self-cleaning...12101141- SKU:
- 12101141
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- COLOR/FINISH:
- GREEN
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
MSRP: $149.98Now: $127.00Was: $149.98 -
On Sale
Renthal Ultralight Rear Sprocket 50T Silver 131U-520-50GBSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Yamaha's performance with the RENTHAL 50-Tooth Rear Sprocket, precision-engineered from high-strength 7075-T6 aluminum alloy. This ultralight sprocket is 66% lighter than steel, yet offers exceptional durability. Its self-cleaning mud...R13150- SKU:
- R13150
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 50
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 49-Tooth Rear Sprocket for Yamaha 520 Chain 150U-520-49GBSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Yamaha's performance with the RENTHAL 49-Tooth Rear Sprocket, precision-engineered for durability and lightweight efficiency. Constructed from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers a significant weight reduction...R150A52049- SKU:
- R150A52049
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 49
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 51-Tooth Rear Sprocket for Yamaha 150U-520-51GBSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Yamaha motorcycle's performance with the RENTHAL 51-Tooth Rear Sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers exceptional durability while being 66% lighter than traditional steel sprockets. Its...R150A52051- SKU:
- R150A52051
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- TYPE:
- DRIVE
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 46-Tooth Rear Sprocket for Honda CR125R CR250R CR500R CRF150F CRF230F CRF250F CRF250R CRF250RX CRF250X CRF450R CRF450RL CRF450RWE CRF450RX CRF450X XR250R XR400R XR650R 154U-520-46GRSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Honda's performance with the RENTHAL 46-Tooth Rear Sprocket. Crafted from high-quality 7075-T6 aluminum alloy, this sprocket offers a perfect balance of strength and lightweight design. Its CNC-machined self-cleaning mud grooves at each...R15446- SKU:
- R15446
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
- UNITS:
- EACH
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal Ultralight Rear Sprocket 47T 520 Chain Silver 154U-520-47GRSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Honda motorcycle's performance with the RENTHAL 47-Tooth Rear Sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers a lightweight yet durable solution for riders seeking improved acceleration and handling. Its...R15447- SKU:
- R15447
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 51-Tooth Rear Sprocket for Honda 154U-520-51GRSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Honda's performance with the RENTHAL 51-Tooth Rear Sprocket, precision-engineered for durability and efficiency. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers a lightweight yet robust solution for your riding...R15451- SKU:
- R15451
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- TYPE:
- DRIVE
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 53-Tooth Rear Sprocket for Honda CR125R CR250R CR500R CRF150F CRF230F CRF250F CRF250R CRF250RX CRF250X CRF450R CRF450RL CRF450RWE CRF450RX CRF450X XR250R XR400R XR650R 154U-520-53GRSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Honda motorcycle's performance with the RENTHAL 53-Tooth Rear Sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers a lightweight yet durable solution for riders seeking improved acceleration and handling. Its...R15453- SKU:
- R15453
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 53
- TYPE:
- DRIVE
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 49-Tooth Ultralight Rear Sprocket for Kawasaki KX100 KX85 KX80 191U-420-49GESI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Kawasaki motorcycle's performance with the RENTHAL 191U-420-49GESI rear sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers a perfect balance of lightweight design and exceptional durability. Its ultralight...R19149- SKU:
- R19149
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 51-Tooth Rear Sprocket for Kawasaki KX100 KX85 KX80 191U-420-51GESI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Kawasaki motorcycle's performance with the RENTHAL 191U-420-51GESI rear sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers exceptional strength while maintaining an ultralight design approximately 66%...R19151- SKU:
- R19151
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 48-Tooth Ultralight Rear Sprocket for KTM 65 SX 192U-420-48GPSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your KTM's performance with the RENTHAL 48-Tooth Rear Sprocket, precision-engineered from 7075-T6 aluminum alloy. This ultralight sprocket is 66% lighter than steel, yet offers exceptional durability. Its self-cleaning mud grooves at each tooth...R192U42048- SKU:
- R192U42048
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 420
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- SILVER
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 49-Tooth Rear Sprocket for KTM 65 SX 192U-420-49GPSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your KTM's performance with the RENTHAL 49-Tooth Rear Sprocket, precision-engineered from high-strength 7075-T6 aluminum alloy. Its self-cleaning mud grooves at each tooth prevent debris buildup, ensuring consistent traction and reducing...R192U42049- SKU:
- R192U42049
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- CHAIN SIZE:
- 420
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- SILVER
- TYPE:
- DRIVE
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 48-Tooth Ultralight Rear Sprocket for KTM 224U-520-48GPSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your KTM's performance with the RENTHAL 48-Tooth Rear Sprocket, precision-engineered from high-strength 7075-T6 aluminum alloy. This ultralight sprocket is approximately 66% lighter than traditional steel options, reducing unsprung weight and...R22448- SKU:
- R22448
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 50-Tooth Rear Sprocket for KTM 224U-520-50GPSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your KTM's performance with the RENTHAL 50-Tooth Rear Sprocket, precision-engineered from high-strength 7075-T6 aluminum alloy. This ultralight sprocket is 66% lighter than steel counterparts, offering improved handling and acceleration without...R22450- SKU:
- R22450
- Availability:
- Ships Same Business Day
- Weight:
- 0.82 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal Ultralight Rear Sprocket 49T 520 Chain Silver 131U-520-49GBSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Yamaha motorcycle's performance with the RENTHAL 49-Tooth Sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers exceptional durability while being approximately 66% lighter than traditional steel options. Its...R13149- SKU:
- R13149
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal Ultralight Rear Sprocket 51T 520 Chain Silver 131U-520-51GBSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Yamaha's performance with the RENTHAL 51-Tooth Rear Sprocket, precision-engineered for durability and weight reduction. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket is 66% lighter than traditional steel options, improving...R13151- SKU:
- R13151
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 47-Tooth Rear Sprocket for Yamaha 150U-520-47GBSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Yamaha's performance with the RENTHAL 47-Tooth Rear Sprocket, precision-engineered from 7075-T6 aluminum alloy. This ultralight sprocket is 66% lighter than steel counterparts, yet offers exceptional durability. Its self-cleaning mud grooves...R150A52047- SKU:
- R150A52047
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 47
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
MSRP: $99.82Now: $85.00Was: $99.82 -
On Sale
Renthal 45-Tooth Rear Sprocket for Honda 520 Chain Silver 154U-520-45GRSI
RENTHAL
MSRP: $99.82Now: $85.00Was: $99.82Enhance your Honda motorcycle's performance with the RENTHAL 45-Tooth Rear Sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers a perfect balance of strength and lightweight design. Its CNC-machined self-cleaning mud...R15445- SKU:
- R15445
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- UNITS:
- EACH
MSRP: $99.82Now: $85.00Was: $99.82
