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
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Renthal Front Sprocket 13T 520 Chain Kawasaki KLX450R KX450F KX450X 452--520-13P
RENTHAL
$37.95A lightweight front sprocket is essential for improving throttle response and reducing unsprung mass on your Kawasaki dirt bike. The Renthal 13T combines case-hardened 655M13 nickel chromium steel construction with CNC precision machining to deliver...12120207- SKU:
- 12120207
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
- UNITS:
- EACH
$37.95 -
Renthal Front Sprocket 14-Tooth 520 Chain Kawasaki 452--520-14GP
RENTHAL
$37.95A worn or undersized front sprocket directly impacts your Kawasaki's throttle response, acceleration, and chain wear. The Renthal 14-Tooth Front Sprocket delivers precision engineering and material science that reduces unsprung weight while extending...12120208- SKU:
- 12120208
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 14
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
$37.95 -
Renthal 51 Tooth Black TwinRing Heavy-Duty Rear Sprocket 1120-520-51GPBK
RENTHAL
$142.50If you're running a 520 chain on your dirt bike or adventure rig, sprocket wear directly impacts your power delivery and acceleration. The Renthal 51 Tooth Black TwinRing combines a lightweight aluminum core with a durable nickel-coated steel outer...12100806- SKU:
- 12100806
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
$142.50 -
Renthal Twinring Rear Sprocket 50-Tooth Green 112052050GPGN
RENTHAL
$149.98A rear sprocket that demands minimal maintenance while delivering extended service life is essential when you're logging serious miles on demanding terrain. The Renthal Twinring combines lightweight aluminum engineering with steel durability—eliminating...12101140- SKU:
- 12101140
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GREEN
- TYPE:
- DRIVE
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
$149.98 -
Renthal 520 R33 Chain Connecting Link Clip C404
RENTHAL
$9.25A chain is only as strong as its weakest link—and that connection point takes a beating on track or trail. The Renthal 520 R33 Chain Connecting Link Clip C404 delivers a secure, clip-type connection that you can install or swap in seconds without special...12250467- SKU:
- 12250467
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- GOLD
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- CHAIN TYPE:
- 520 R33
- TYPE:
- CLIP
- PRODUCT NAME:
- CONNECTING LINK
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- NUMBER OF LINKS:
- 1
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$9.25 -
Renthal 520 R33 Gold Drive Chain 120 Links C416
RENTHAL
$181.55Chain wear is one of the most common failure points in high-performance off-road riding, and a worn chain directly impacts power delivery and rider safety. The Renthal 520 R33 Gold Chain replaces traditional O-ring seals with Renthal's Self-Regulating...12220453- SKU:
- 12220453
- Availability:
- Ships Same Business Day
- Weight:
- 4.45 LBS
- CHAIN TYPE:
- 520 R33
- MASTER LINK CONNECTOR:
- HOLLOW
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 450 CC
- RIDING STYLE:
- UTV
- SEAL TYPE:
- SELF REGULATING SEAL (SRS)
- CHAIN SIZE:
- 520
- MODEL:
- R3
- RIDING STYLE:
- ATV
- TENSILE STRENGTH IMPERIAL:
- 7420 LB
- TENSILE STRENGTH METRIC:
- 33 KN
- UNITS:
- EACH
- COLOR/FINISH:
- GOLD
- MASTER LINK CONNECTOR:
- CLIP
- NUMBER OF LINKS:
- 120
- PRODUCT NAME:
- DRIVE CHAIN
- RIDING STYLE:
- OFF-ROAD
$181.55 -
Hinson Racing Billetproof Clutch Kit 2021-2023 Kawasaki KX250 HC557-2101
HINSON RACING
$1,109.99Factory clutches struggle under aggressive throttle and sustained high RPMs—the Hinson Racing Billetproof Clutch Kit delivers the holding power and heat resistance your KX250 needs for consistent performance whether you're pushing hard at the track or...11300634- SKU:
- 11300634
- Availability:
- Ships Same Business Day
- Weight:
- 5.55 LBS
$1,109.99 -
HOT RODS Transmission Bearing Kit TBK0061
HOT RODS
$84.95Whether you're rebuilding a transmission from the ground up or installing a fresh engine case, bearing failure is not an option. The HOT RODS Transmission Bearing Kit TBK0061 supplies OEM-quality bearings engineered to handle the demands of high-rpm...11060140- SKU:
- 11060140
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$84.95Qty in Cart: 0Quantity:Price:$84.95Subtotal: -
MOOSE OFFROAD Clutch Kit - CRF 450 M90-262
MOOSE OFFROAD
$191.95A worn or slipping clutch will rob your CRF 450 of power transfer and throttle response when you need it most. The MOOSE OFFROAD Clutch Kit delivers OEM-quality engagement with superior durability, giving you the confident grab and consistent performance...11313626- SKU:
- 11313626
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
$191.95Qty in Cart: 0Quantity:Price:$191.95Subtotal: -
JT SPROCKETS Steel Rear Sprocket - Graphite - 50 Tooth JTX251.50GR
JT SPROCKETS
$51.80A 50-tooth rear sprocket is your direct path to stronger acceleration and improved low-end torque delivery—critical for both track launches and street performance. The JT Sprockets Steel Rear Sprocket combines heat-treated steel construction with a...12102603- SKU:
- 12102603
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
$51.80Qty in Cart: 0Quantity:Price:$51.80Subtotal: -
JT SPROCKETS Rear Sprocket - Blue - 51 Tooth - Yamaha JTA251.51BLU
JT SPROCKETS
$41.43A worn or mismatched rear sprocket directly impacts your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 51-tooth rear sprocket delivers the precision engineering and durability needed to maintain consistent power...12112580- SKU:
- 12112580
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$41.43Qty in Cart: 0Quantity:Price:$41.43Subtotal: -
JT SPROCKETS Rear Sprocket - Black - 49 Tooth - Yamaha JTA251.49BLK
JT SPROCKETS
$38.88A worn or undersized rear sprocket directly impacts your Yamaha's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 49-tooth rear sprocket delivers the precise gear ratio needed to maximize performance while maintaining...12112648- SKU:
- 12112648
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$38.88 -
On Sale
Wiseco Clutch Basket Yamaha YZ125 2005-2025 WPP3032
WISECO
MSRP: $329.95Now: $255.00Was: $329.95A worn or marginal clutch basket compromises power delivery and creates inconsistent engagement—critical liabilities whether you're racing or logging serious trail hours on your YZ125. This Wiseco basket restores crisp clutch response and reliability...11320236- SKU:
- 11320236
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
MSRP: $329.95Now: $255.00Was: $329.95 -
UFO Chain Guide - Black - Honda HO05610-001
UFO
$19.95A worn or damaged chain guide accelerates wear on your sprockets and chain while introducing noise and vibration into your drivetrain. The UFO Chain Guide restores proper chain alignment and tension, protecting your entire drivetrain system from...12311480- SKU:
- 12311480
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$19.95 -
UFO Chain Slider - Red - Honda HO05610-070
UFO
$19.95Chain slap and abrasion will gradually wear through your swingarm's finish and underlying material, compromising both aesthetics and structural integrity. The UFO Chain Slider shields this critical suspension component from constant chain contact,...12311481- SKU:
- 12311481
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$19.95Qty in Cart: 0Quantity:Price:$19.95Subtotal: -
MOOSE OFFROAD Steel Rear Sprocket - 49 Tooth 1210-897-49-STL
MOOSE OFFROAD
$29.95A quality rear sprocket is fundamental to your drivetrain's efficiency and longevity. The MOOSE OFFROAD 49-tooth steel sprocket delivers reliable power transfer with precision manufacturing and optimized weight, making it an essential upgrade for riders...12101749- SKU:
- 12101749
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
$29.95 -
MOOSE OFFROAD Steel Rear Sprocket - 46 Tooth 1210-895-46-STL
MOOSE OFFROAD
$29.95A properly sized rear sprocket is critical for optimizing your off-road machine's power delivery and acceleration characteristics. The MOOSE OFFROAD 46-tooth steel sprocket delivers the durability and precision needed for demanding trail conditions,...12101768- SKU:
- 12101768
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
$29.95Qty in Cart: 0Quantity:Price:$29.95Subtotal: -
MOOSE OFFROAD Steel Rear Sprocket - 47 Tooth 1210-895-47-STL
MOOSE OFFROAD
$29.95A 47-tooth rear sprocket shifts your bike's powerband toward aggressive acceleration and low-end torque—ideal if you're running tighter courses, technical terrain, or simply want quicker throttle response. MOOSE's C45 high-carbon steel construction...12101769- SKU:
- 12101769
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
$29.95 -
MOOSE OFFROAD Rear Sprocket - 47 Tooth - Suzuki/Yamaha 1210-798-47-STL
MOOSE OFFROAD
$29.95Upgrading to a 47-tooth rear sprocket transforms your power delivery and acceleration, giving you the responsive gear ratio your Suzuki or Yamaha demands for aggressive trail riding or track performance. MOOSE OFFROAD engineered this sprocket from...12101793- SKU:
- 12101793
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
$29.95 -
MOOSE OFFROAD Rear Sprocket - 48 Tooth - Suzuki/Yamaha 1210-798-48-STL
MOOSE OFFROAD
$29.95A properly sized rear sprocket is critical for optimizing your bike's acceleration, top-end speed, and overall powerband delivery. The MOOSE OFFROAD 48-tooth rear sprocket gives you the gear ratio fine-tuning needed to match your riding style and terrain...12101794- SKU:
- 12101794
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
$29.95Qty in Cart: 0Quantity:Price:$29.95Subtotal:
