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 Sprocket - Rear - 42-Tooth JTR822.42
JT SPROCKETS
$32.15A lightweight rear sprocket is one of the most effective ways to reduce unsprung rotating mass, directly improving acceleration response and handling dynamics. The JT 42-tooth rear sprocket delivers computer-optimized tooth geometry for maximum strength...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
$47.30A worn or mismatched rear sprocket directly impacts your bike's acceleration, top-end speed, and drivetrain efficiency. The JT Sprockets 50-tooth rear sprocket delivers the precision engineering and durability required for consistent performance, whether...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
$47.30Qty in Cart: 0Quantity:Price:$47.30Subtotal: -
JT SPROCKETS Sprocket - Rear - Suzuki - 48-Tooth JTR816.48
JT SPROCKETS
$46.13A worn or incorrect sprocket ratio directly impacts acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 48-tooth rear sprocket delivers the precision engineering and durability demanded by serious riders and racers who refuse...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
$46.13Qty in Cart: 0Quantity:Price:$46.13Subtotal: -
JT SPROCKETS Sprocket - Rear - Suzuki - 45-Tooth JTR816.45
JT SPROCKETS
$39.95A worn or undersized rear sprocket robs your Suzuki of acceleration and top-end performance. The JT Sprockets 45-tooth rear sprocket delivers the precise gear ratio needed for aggressive acceleration while maintaining durability under sustained load...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
$39.95A worn or incorrectly-sized rear sprocket directly impacts your power delivery, acceleration response, and top-end performance. The JT Sprockets 43-tooth rear sprocket delivers the precision engineering and durability you need to maximize drivetrain...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
$24.63A properly sized rear sprocket is essential for optimizing your Honda's power delivery and acceleration characteristics. The JT Sprockets 49-tooth rear sprocket delivers the strength and durability demanded by both track and street applications, while...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
$26.20A quality rear sprocket is fundamental to your drivetrain's efficiency and longevity. This 55-tooth JT sprocket delivers the precision engineering and material science you need to maintain power delivery while minimizing rotational losses. Whether you're...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
$22.23A rear sprocket is fundamental to your drivetrain's performance—it directly affects acceleration, top-end speed, and overall power delivery to the rear wheel. The JT Sprockets 51-tooth rear sprocket combines precision engineering with proven durability,...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
$20.58A quality rear sprocket is fundamental to maximizing drivetrain efficiency and acceleration response. The JT Sprockets 49-tooth rear sprocket delivers the precision engineering and material integrity that serious riders demand, whether you're pushing lap...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 -
On Sale
Sunstar Rear Sprocket 50T Kawasaki KX 250F 2004-2021 Gold 5-361950
SUNSTAR SPROCKETS
MSRP: $88.95Now: $57.00Was: $88.95The Sunstar 50T rear sprocket is engineered to deliver measurable improvements in chain engagement and power transfer on your KX 250F. By increasing tooth-valley contact area by 50%, this sprocket reduces drivetrain slack and improves throttle...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
MSRP: $88.95Now: $57.00Was: $88.95Qty in Cart: 0Quantity:Price:MSRP: $88.95Now: $57.00Was: $88.95Subtotal: -
JT SPROCKETS Rear Sprocket - Kawasaki - Black - 50 Tooth JTA460.50BLK
JT SPROCKETS
$40.35A rear sprocket is critical to your bike's acceleration, top-end speed, and overall drivetrain efficiency—choosing the wrong tooth count directly impacts power delivery and engine longevity. The JT Sprockets 50-tooth rear sprocket delivers...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
$29.55A lightweight rear sprocket is one of the most effective upgrades for improving acceleration and reducing rotating mass in your drivetrain. The JT Sprockets 45-tooth rear sprocket delivers computer-optimized tooth geometry and premium material...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
$29.55If you're serious about reducing un-sprung weight and improving acceleration response, a lightweight rear sprocket is one of the highest-ROI upgrades you can make. The JT Sprockets 40-tooth rear sprocket delivers measurable performance gains through...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
$29.55Reducing unsprung rotating weight is one of the most effective ways to improve acceleration and handling response, and the JT Sprockets 42-Tooth Rear Race Sprocket delivers exactly that. This Austrian 7075 T-6 aluminum sprocket weighs approximately 30%...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 -
SUPERSPROX Steel Rear Sprocket - 50-Tooth RFE-1512-50-BLK
SUPERSPROX
$59.95A sprocket is your drivetrain's critical link between engine power and wheel acceleration—choose poorly, and you're left with premature wear, inconsistent power delivery, and costly replacements. The SUPERSPROX 50-tooth rear sprocket delivers race-proven...12101878- SKU:
- 12101878
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- REAR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
JT SPROCKETS Rear Sprocket - 47-Tooth - Honda JTR210.47SC
JT SPROCKETS
$29.55A properly sized rear sprocket is critical for optimizing your Honda's power delivery and acceleration characteristics. The JT 47-tooth rear sprocket combines precision engineering with weight reduction, giving you the performance edge that separates...12102434- SKU:
- 12102434
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 47
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
$29.55 -
JT SPROCKETS Rear Sprocket - 52-Tooth - Honda JTR210.52SC
JT SPROCKETS
$32.98A quality rear sprocket is fundamental to your drivetrain's efficiency and longevity. The JT Sprockets 52-Tooth rear sprocket delivers reliable power transmission with minimal rotating mass, directly improving throttle response and reducing wear on your...12102439- SKU:
- 12102439
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 52
- UNITS:
- EACH
$32.98 -
JT SPROCKETS Rear Sprocket - 53-Tooth - Honda JTR210.53SC
JT SPROCKETS
$32.98A properly matched rear sprocket is critical to your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 53-tooth rear sprocket delivers the precision engineering and material quality that serious riders demand,...12102440- SKU:
- 12102440
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 53
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
$32.98 -
JT SPROCKETS Rear Sprocket - 48-Tooth - Yamaha JTR251.48SC
JT SPROCKETS
$29.55The right rear sprocket is critical to your bike's acceleration, top-end speed, and chain longevity. JT's 48-tooth rear sprocket delivers the precision engineering and material quality that separates bolt-on upgrades from genuine performance gains. By...12102441- SKU:
- 12102441
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- UNITS:
- EACH
- MATERIAL:
- STEEL
$29.55 -
JT SPROCKETS Sprocket - Rear - KTM - 50-Tooth JTR894.50
JT SPROCKETS
$20.78A rear sprocket is critical to your KTM's acceleration, top-end performance, and overall drivetrain efficiency. The JT Sprockets 50-tooth rear sprocket delivers computer-optimized strength-to-weight ratio, reducing unsprung rotating mass without...12100662- SKU:
- 12100662
- Availability:
- Ships Same Business Day
- Weight:
- 1.51 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$20.78
