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
-
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 42 Tooth 64511-14A00
PARTS UNLIMITED
$35.65PARTS UNLIMITED Rear Suzuki Sprocket 520 42 Tooth 64511-14A00All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223802Z- SKU:
- K223802Z
- Availability:
- Ships Same Business Day
- Weight:
- 1.69 LBS
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 42
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$35.65Qty in Cart: 0Quantity:Price:$35.65Subtotal: -
PARTS UNLIMITED Rear Suzuki Sprocket - 428 - 47 Tooth 64511-20920-47
PARTS UNLIMITED
$27.49PARTS UNLIMITED Rear Suzuki Sprocket 428 47 Tooth 64511-20920-47All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223803S- SKU:
- K223803S
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$27.49Qty in Cart: 0Quantity:Price:$27.49Subtotal: -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 39 Tooth 64511-29000
PARTS UNLIMITED
$32.59PARTS UNLIMITED Rear Suzuki Sprocket 520 39 Tooth 64511-29000All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223811- SKU:
- K223811
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 39
- MATERIAL:
- STEEL
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
$32.59 -
PARTS UNLIMITED Rear Suzuki Sprocket - 525 - 40 Tooth 64511-30700
PARTS UNLIMITED
$41.77PARTS UNLIMITED Rear Suzuki Sprocket 525 40 Tooth 64511-30700All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223816- SKU:
- K223816
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- TOOTH COUNT:
- 40
- CHAIN SIZE:
- 525
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$41.77 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 50 Tooth 64511-41131
PARTS UNLIMITED
$51.97PARTS UNLIMITED Rear Suzuki Sprocket 520 50 Tooth 64511-41131All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223842- SKU:
- K223842
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$51.97 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 45 Tooth 41201-KCY-67
PARTS UNLIMITED
$36.67PARTS UNLIMITED Rear Honda Sprocket 520 45 Tooth 41201-KCY-67All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223902- SKU:
- K223902
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
$36.67 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 45 Tooth 41201-MY6-67
PARTS UNLIMITED
$31.57PARTS UNLIMITED Rear Honda Sprocket 520 45 Tooth 41201-MY6-67All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223911- SKU:
- K223911
- Availability:
- Ships Same Business Day
- Weight:
- 2.28 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- NATURAL
- TYPE:
- DRIVE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
$31.57Qty in Cart: 0Quantity:Price:$31.57Subtotal: -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 44 Tooth 64511-08D50
PARTS UNLIMITED
$30.55PARTS UNLIMITED Rear Suzuki Sprocket 520 44 Tooth 64511-08D50All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223932- SKU:
- K223932
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 44
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
$30.55 -
PARTS UNLIMITED Rear Yamaha Sprocket - 520 - 44 Tooth 214-25444-10
PARTS UNLIMITED
$44.83PARTS UNLIMITED Rear Yamaha Sprocket 520 44 Tooth 214-25444-10All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223621- SKU:
- K223621
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 44
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$44.83 -
PARTS UNLIMITED Rear Honda Sprocket - 520 - 42 Tooth 41201KL4-671-42
PARTS UNLIMITED
$35.65PARTS UNLIMITED Rear Honda Sprocket 520 42 Tooth 41201KL4-671-42All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223505Z- SKU:
- K223505Z
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- COLOR/FINISH:
- NATURAL
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 42
- UNITS:
- EACH
$35.65Qty in Cart: 0Quantity:Price:$35.65Subtotal: -
PARTS UNLIMITED Rear Honda Sprocket - 420 - 44 Tooth 41201118-000-44
PARTS UNLIMITED
$28.51PARTS UNLIMITED Rear Honda Sprocket 420 44 Tooth 41201118-000-44All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223506- SKU:
- K223506
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 44
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$28.51 -
PARTS UNLIMITED Rear Yamaha Sprocket - 520 - 51 Tooth CT243-51S
PARTS UNLIMITED
$54.01PARTS UNLIMITED Rear Yamaha Sprocket 520 51 Tooth CT243-51SAll our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and teeth...K223604G- SKU:
- K223604G
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$54.01 -
PARTS UNLIMITED Rear Yamaha Sprocket - 54 Tooth 5HP-25454-20-54
PARTS UNLIMITED
$31.57PARTS UNLIMITED Rear Yamaha Sprocket 54 Tooth 5HP-25454-20-54All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...12100032- SKU:
- 12100032
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 54
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$31.57 -
PARTS UNLIMITED Rear Yamaha Sprocket - 49 Tooth 5FC-25449-20-49
PARTS UNLIMITED
$25.45PARTS UNLIMITED Rear Yamaha Sprocket 49 Tooth 5FC-25449-20-49All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...12100033- SKU:
- 12100033
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$25.45 -
VORTEX Aluminum Sprocket - Silver - Rear - 34-Tooth 206-34
VORTEX
$59.95VORTEX Aluminum Sprocket Silver Rear 34-Tooth 206-34Anodized to prevent corrosion, Tooth layout specifically designed to increase sprocket longevity12111712- SKU:
- 12111712
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- ALUMINUM
- TYPE:
- DRIVE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- SILVER
- TOOTH COUNT:
- 34
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
VORTEX Aluminum Sprocket - Silver - Rear - 36 Tooth 206-36
VORTEX
$59.95VORTEX Aluminum Sprocket Silver Rear 36 Tooth 206-36Anodized to prevent corrosion, Tooth layout specifically designed to increase sprocket longevity12111714- SKU:
- 12111714
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 420
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 36
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- TYPE:
- DRIVE
$59.95 -
VORTEX Aluminum Sprocket - Silver - Rear - 37-Tooth 206-37
VORTEX
$59.95VORTEX Aluminum Sprocket Silver Rear 37-Tooth 206-37Anodized to prevent corrosion, Tooth layout specifically designed to increase sprocket longevity12111715- SKU:
- 12111715
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SILVER
- TYPE:
- DRIVE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 37
- UNITS:
- EACH
- CHAIN SIZE:
- 420
$59.95 -
VORTEX Aluminum Sprocket - Silver - Rear - 33-Tooth 206-33
VORTEX
$59.95VORTEX Aluminum Sprocket Silver Rear 33-Tooth 206-33Anodized to prevent corrosion, Tooth layout specifically designed to increase sprocket longevity12111711- SKU:
- 12111711
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- TOOTH COUNT:
- 33
- TYPE:
- DRIVE
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- SILVER
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
$59.95 -
PARTS UNLIMITED Rear Honda Sprocket - 420 - 46 Tooth H01-GN1-000
PARTS UNLIMITED
$29.53PARTS UNLIMITED Rear Honda Sprocket 420 46 Tooth H01-GN1-000All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...K223504M- SKU:
- K223504M
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
$29.53 -
PARTS UNLIMITED Rear Honda Sprocket - 420 - 36 Tooth 41201-GEL-70036
PARTS UNLIMITED
$18.31PARTS UNLIMITED Rear Honda Sprocket 420 36 Tooth 41201-GEL-70036All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life, All match original equipment exactly and feature precision-machined splines and...12100370- SKU:
- 12100370
- Availability:
- Ships Same Business Day
- Weight:
- 0.92 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 36
- UNITS:
- EACH
$18.31
