Dirt Bike Drivetrain
Dirt Bike Drivetrain Parts at JJ Motorsports
Enhance your dirt bike’s power transfer with premium drivetrain parts from JJ Motorsports. Find heavy-duty chains, front and rear sprockets, and clutch components designed to withstand intense riding demands. Combine these with other motocross gear and parts to maximize acceleration and ride efficiency on the track or trail.
Shop trusted brands like JT Chains for sealed chains and Renthal for ultralight sprockets. Explore related categories such as Dirt Bike Engine Parts for power upgrades or Dirt Bike Exhaust for complete tuning.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
PARTS UNLIMITED Rear Honda Sprocket - 428 - 49 Tooth 41201-364-790
PARTS UNLIMITED
$29.53All 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 for a perfect fit, Packaged individually in poly bags with...K223588- SKU:
- K223588
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$29.53 -
PARTS UNLIMITED Rear Yamaha Sprocket - 482 - 45 Tooth 248-25445-10
PARTS UNLIMITED
$24.43All 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 for a perfect fit, Packaged individually in poly bags with...K223602- SKU:
- K223602
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
- UNITS:
- EACH
$24.43 -
PARTS UNLIMITED Rear Yamaha Sprocket - 428 - 44 Tooth 4V1-25444-10
PARTS UNLIMITED
$27.49All 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 teeth for a perfect fit, Packaged individually in poly bags with...K223602L- SKU:
- K223602L
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 428
- TYPE:
- DRIVE
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 44
$27.49 -
PARTS UNLIMITED Rear Yamaha Sprocket - 428 - 50 Tooth 15A-25450-10
PARTS UNLIMITED
$27.49All 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 teeth for a perfect fit, Packaged individually in poly bags with...K223603J- SKU:
- K223603J
- Availability:
- Ships Same Business Day
- Weight:
- 2.56 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- TYPE:
- DRIVE
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 428
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$27.49 -
PARTS UNLIMITED Rear Yamaha Sprocket - 520 - 38 Tooth 5Y1-25438-20
PARTS UNLIMITED
$29.53All 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 for a perfect fit, Packaged individually in poly bags with...K223603N- SKU:
- K223603N
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- TOOTH COUNT:
- 38
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- ATV
- TYPE:
- DRIVE
- UNITS:
- EACH
$29.53 -
PARTS UNLIMITED Rear Suzuki Sprocket - 428 - 48 Tooth 64511-20920-48
PARTS UNLIMITED
$25.45All 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 for a perfect fit, Packaged individually in poly bags with...K223801W- SKU:
- K223801W
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
$25.45 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 47 Tooth 64511-40285-47T
PARTS UNLIMITED
$41.77All 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 for a perfect fit, Packaged individually in poly bags with...K223802V- SKU:
- K223802V
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
$41.77 -
PARTS UNLIMITED Rear Suzuki Sprocket - 428 - 47 Tooth 64511-20920-47
PARTS UNLIMITED
$27.49All 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 teeth for a perfect fit, Packaged individually in poly bags with...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
$27.49 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 39 Tooth 64511-29000
PARTS UNLIMITED
$32.59All 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 for a perfect fit, Packaged individually in poly bags with...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
$41.77All 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 for a perfect fit, Packaged individually in poly bags with...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
$51.97All 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 for a perfect fit, Packaged individually in poly bags with...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
$36.67All 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 teeth for a perfect fit, Packaged individually in poly bags with...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
$31.57All 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 for a perfect fit, Packaged individually in poly bags with...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
$31.57 -
PARTS UNLIMITED Rear Suzuki Sprocket - 520 - 44 Tooth 64511-08D50
PARTS UNLIMITED
$30.55All 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 for a perfect fit, Packaged individually in poly bags with...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
$44.83All 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 for a perfect fit, Packaged individually in poly bags with...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 - 420 - 44 Tooth 41201118-000-44
PARTS UNLIMITED
$28.51All 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 for a perfect fit, Packaged individually in poly bags with...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
$54.01All 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 for a perfect fit, Packaged individually in poly bags with...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 Countershaft Sprocket - 12-Tooth 23800041-010-12
PARTS UNLIMITED
$7.09All our front 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 for a perfect fitK222501- SKU:
- K222501
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- CHAIN SIZE:
- 420
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 12
$7.09 -
PARTS UNLIMITED Single Bearing - 20 x 47 x 14 6204-2RS
PARTS UNLIMITED
$7.72Electric motor quality62042RS- SKU:
- 62042RS
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- INSIDE DIAMETER:
- 20 MM
- OUTSIDE DIAMETER:
- 47 MM
- TYPE:
- DOUBLE SEAL
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- STYLE:
- SMOOTH
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- THICKNESS:
- 14 MM
- UNITS:
- EACH
$7.72 -
MOOSE RACING Kickstarter 80-0345-00-60
MOOSE RACING
$139.95Zinc-coated, corrosion-resistant, hardened CNC mounting bracket, Hard anodized finish to prevent UV fading, Exact OEM size and length, Meet or exceed OEM quality11120112- SKU:
- 11120112
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- MATERIAL:
- 6061 ALUMINUM
- PRODUCT NAME:
- KICKSTARTER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$139.95
