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 Kawasaki Sprocket - 520 - 44 Tooth 42041-1191
PARTS UNLIMITED
$34.63All 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...K223701K- SKU:
- K223701K
- Availability:
- Ships Same Business Day
- Weight:
- 1.94 LBS
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- NATURAL
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 44
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
$34.63 -
PARTS UNLIMITED Rear Kawasaki Sprocket - 520 - 45 Tooth CT217-45S
PARTS UNLIMITED
$40.75All 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...K223702G- SKU:
- K223702G
- Availability:
- Ships Same Business Day
- Weight:
- 2.19 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
$40.75 -
PARTS UNLIMITED Rear Kawasaki Sprocket - 428 - 50 Tooth 42041-146
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...K223724- SKU:
- K223724
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- CHAIN SIZE:
- 428
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
$27.49 -
PARTS UNLIMITED Countershaft Sprocket - 14-Tooth 93823-14149-14T
PARTS UNLIMITED
$11.17All 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 fit12120365- SKU:
- 12120365
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 14
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
$11.17 -
PARTS UNLIMITED Countershaft Sprocket - 12-Tooth 23801-KSR-A0012
PARTS UNLIMITED
$11.17All 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 fit12120396- SKU:
- 12120396
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 12
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RAW
- TYPE:
- COUNTERSHAFT
$11.17 -
PARTS UNLIMITED Countershaft Sprocket - 13-Tooth 23801-KSR-A0013
PARTS UNLIMITED
$12.19All 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 fit12120397- SKU:
- 12120397
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RAW
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
$12.19 -
PARTS UNLIMITED Countershaft Sprocket - 14-Tooth 23801-KSR-A0014
PARTS UNLIMITED
$14.23All 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 fit12120398- SKU:
- 12120398
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
$14.23 -
PARTS UNLIMITED Countershaft Sprocket - 13-Tooth 2JW-17461-30
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 fit12120146- SKU:
- 12120146
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- RAW
- TYPE:
- COUNTERSHAFT
$7.09 -
PARTS UNLIMITED Countershaft Sprocket - 12-Tooth 13144-0006-12
PARTS UNLIMITED
$8.11All 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 fit12120147- SKU:
- 12120147
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RAW
- TYPE:
- COUNTERSHAFT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 12
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
$8.11 -
PARTS UNLIMITED Countershaft Sprocket - 13-Tooth 13144-0001-13
PARTS UNLIMITED
$9.13All 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 fit12120148- SKU:
- 12120148
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 13
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RAW
$9.13 -
PARTS UNLIMITED Countershaft Sprocket - 13-Tooth 9382A-14227-13
PARTS UNLIMITED
$6.07All 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 fit12120149- SKU:
- 12120149
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- RAW
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
- UNITS:
- EACH
$6.07 -
PARTS UNLIMITED Countershaft Sprocket - 14-Tooth 9382A-14227-14
PARTS UNLIMITED
$8.11All 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 fit12120150- SKU:
- 12120150
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- RAW
- TYPE:
- COUNTERSHAFT
$8.11 -
PARTS UNLIMITED Countershaft Sprocket - 13-Tooth 9383B-13218-13
PARTS UNLIMITED
$12.19All 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 fit12120151- SKU:
- 12120151
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RAW
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
$12.19Qty in Cart: 0Quantity:Price:$12.19Subtotal: -
PARTS UNLIMITED 520 - Drive Chain - 120 Links T520120
PARTS UNLIMITED
$32.95Reliable High-Quality Chain Exceptional durability for long-lasting performance Precut lengths for easy installation and convenience Individually boxed with a clip-type master link Designed for seamless operation in various...T520120- SKU:
- T520120
- Availability:
- Ships Same Business Day
- Weight:
- 3.88 LBS
- RIDING STYLE:
- OFF-ROAD
- SEAL TYPE:
- NON-SEAL
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- BLACK
- MASTER LINK CONNECTOR:
- CLIP
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 250 CC
- NUMBER OF LINKS:
- 120
- PRODUCT NAME:
- DRIVE CHAIN
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TENSILE STRENGTH METRIC:
- 29.3 KN
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MAXIMUM ENGINE DISPLACEMENT (STREET):
- 250 CC
- RIDING STYLE:
- UTV
- TENSILE STRENGTH IMPERIAL:
- 6600 LB
$32.95 -
PARTS UNLIMITED 428 - Drive Chain - 120 Links T428120
PARTS UNLIMITED
$20.95Reliable High-Quality Chain Exceptional durability for long-lasting performance Precut lengths for easy installation and convenience Individually boxed with a clip-type master link Designed for seamless operation in various...T428120- SKU:
- T428120
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- CHAIN SIZE:
- 428
- NUMBER OF LINKS:
- 120
- PRODUCT NAME:
- DRIVE CHAIN
- UNITS:
- EACH
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 125 CC
- RIDING STYLE:
- ATV
- TENSILE STRENGTH METRIC:
- 18 KN
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TENSILE STRENGTH IMPERIAL:
- 4050 LB
- COLOR/FINISH:
- BLACK
- MASTER LINK CONNECTOR:
- CLIP
- MAXIMUM ENGINE DISPLACEMENT (STREET):
- 125 CC
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- SEAL TYPE:
- NON-SEAL
$20.95 -
PARTS UNLIMITED Countershaft Sprocket - 15-Tooth 23800-053-000
PARTS UNLIMITED
$63.19All 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 fitK222503H- SKU:
- K222503H
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 15
$63.19 -
PARTS UNLIMITED Countershaft Sprocket - 17-Tooth 23801344-000-17
PARTS UNLIMITED
$21.37All 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 fitK222526- SKU:
- K222526
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- CHAIN SIZE:
- 530
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 17
- TYPE:
- COUNTERSHAFT
$21.37 -
PARTS UNLIMITED Rear Yamaha Sprocket - 520 - 47 Tooth 214-25447-10
PARTS UNLIMITED
$42.79All 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...K223623- SKU:
- K223623
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
$42.79 -
PARTS UNLIMITED Rear Kawasaki Sprocket - 520 - 43 Tooth 42041-1260
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...K223702B- SKU:
- K223702B
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 43
- TYPE:
- DRIVE
- RIDING STYLE:
- STREET
$41.77 -
PARTS UNLIMITED Rear Honda Sprocket - 420 - 37 Tooth 41201-GW8-670
PARTS UNLIMITED
$17.29All 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...K223901- SKU:
- K223901
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 37
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- TYPE:
- DRIVE
$17.29
