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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On Sale
Renthal 47-Tooth Rear Sprocket for 428 Chain Gas Gas Husqvarna KTM Orange 441U-428-47GPOR
RENTHAL
MSRP: $104.61Now: $94.15Was: $104.61A worn or undersized rear sprocket kills acceleration and forces your engine to work harder than it should. The Renthal 47-Tooth Rear Sprocket delivers the right gearing for off-road performance...12112483- SKU:
- 12112483
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
MSRP: $104.61Now: $94.15Was: $104.61Qty in Cart: 0Quantity:Price:MSRP: $104.61Now: $94.15Was: $104.61Subtotal: -
On Sale
Renthal Rear Sprocket 48T 428 Chain Orange 441U-428-48GPOR
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running serious off-road miles, your sprocket needs to handle mud, dirt, and impact without becoming a liability. The Renthal 48T rear sprocket cuts unsprung weight by 66% compared to...12112484- SKU:
- 12112484
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Ultralight Rear Sprocket 49T 428 Chain Pitch Orange 441U-428-49GPOR
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 428 chain setup on your off-road bike, sprocket weight directly impacts acceleration and overall handling—and this Renthal ultralight saves you nearly two-thirds the mass of steel...12112485- SKU:
- 12112485
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Rear Sprocket 40T Orange 415 Chain 491-415-40P-OR
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95Shaving 66% of weight from your rear sprocket directly improves acceleration, reduces rotational inertia, and enhances overall handling—especially critical for off-road and track applications where...12112491- SKU:
- 12112491
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- TOOTH COUNT:
- 40
- UNITS:
- EACH
- CHAIN SIZE:
- 415
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Front Sprocket 12T 520 Chain Husqvarna TC250 2009-2013 479--520-12GP
RENTHAL
MSRP: $39.95Now: $35.96Was: $39.95A worn or undersized front sprocket directly impacts your TC250's throttle response and acceleration off the line. The Renthal 12T sprocket delivers aggressive gearing with the durability needed for...12120727- SKU:
- 12120727
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- TOOTH COUNT:
- 12
- TYPE:
- FRONT
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
MSRP: $39.95Now: $35.96Was: $39.95 -
On Sale
Renthal Front Sprocket 13T 520 Chain Yamaha 49252013GP
RENTHAL
MSRP: $39.95Now: $35.96Was: $39.95A worn or undersized front sprocket robs your Yamaha of acceleration and forces your engine to work harder than necessary. The Renthal 13T Front Sprocket delivers a precision-engineered upgrade that...12120991- SKU:
- 12120991
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
MSRP: $39.95Now: $35.96Was: $39.95 -
On Sale
Renthal 13T Front Sprocket 520 Chain Husqvarna KTM 292--520-13GP
RENTHAL
MSRP: $37.95Now: $34.16Was: $37.95A worn or oversized front sprocket robs your KTM or Husqvarna of acceleration and throttle response. The Renthal 13T Front Sprocket delivers a measurable performance gain through precision...R29252013- SKU:
- R29252013
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- COLOR/FINISH:
- NATURAL
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 13
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
MSRP: $37.95Now: $34.16Was: $37.95Qty in Cart: 0Quantity:Price:MSRP: $37.95Now: $34.16Was: $37.95Subtotal: -
On Sale
Renthal 48-Tooth Black Rear Sprocket for Honda 154U-520-48GRBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 520 chain setup on your Honda, sprocket weight directly impacts your bike's acceleration and rotational inertia—and this Renthal 48-tooth hits the sweet spot between durability...12110030- SKU:
- 12110030
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
MSRP: $104.95Now: $94.46Was: $104.95Qty in Cart: 0Quantity:Price:MSRP: $104.95Now: $94.46Was: $104.95Subtotal: -
On Sale
Renthal 51-Tooth Black Rear Sprocket for KTM 224U-520-51GPBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a KTM off-road machine, sprocket wear directly impacts acceleration, chain life, and overall drivetrain efficiency. The Renthal 51-tooth rear sprocket replaces worn or damaged stock...12110048- SKU:
- 12110048
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 48-Tooth Rear Sprocket for Honda 154U-520-48GRSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82If you're running a Honda dirt bike or motocross machine, rear sprocket selection directly impacts your acceleration, top-end speed, and overall throttle response. The Renthal 48-Tooth Rear Sprocket...R15448- SKU:
- R15448
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- CHAIN SIZE:
- 520
- TYPE:
- DRIVE
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- UNITS:
- EACH
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal 51-Tooth Rear Sprocket for Kawasaki 112U-520-51GESI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82If you're running a 520 chain setup on your Kawasaki dirt bike, sprocket weight matters more than most riders realize—a lighter rear sprocket directly reduces unsprung mass, improves throttle...R112B51- SKU:
- R112B51
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
MSRP: $99.82Now: $89.84Was: $99.82 -
On Sale
Renthal Rear Sprocket 51 Tooth Black 520 Chain for Suzuki 123U-520-51GYBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95A lightweight rear sprocket is fundamental to unlocking your Suzuki's acceleration and handling potential—especially if you're running aggressive terrain or looking to reduce unsprung weight. The...12110023- SKU:
- 12110023
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Front Sprocket 13T 520 Chain Suzuki RM-Z450 2015-2026 496U-520-13GP
RENTHAL
MSRP: $47.95Now: $43.16Was: $47.95A lightweight front sprocket directly impacts your RM-Z450's throttle response and overall agility—especially critical if you're running tight trail sections or competitive track conditions. The...12121212- SKU:
- 12121212
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- TYPE:
- FRONT
MSRP: $47.95Now: $43.16Was: $47.95Qty in Cart: 0Quantity:Price:MSRP: $47.95Now: $43.16Was: $47.95Subtotal: -
On Sale
Renthal 50T Rear Sprocket Orange 224U-520-50GPOR
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 520 chain setup and pushing your bike hard on the track or trail, sprocket weight directly impacts your bike's acceleration and rotational inertia. The Renthal 50T delivers a...12112476- SKU:
- 12112476
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 50
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 420 R1 Works Chain 120 Links C241
RENTHAL
MSRP: $66.96Now: $60.26Was: $66.96For mini racers pushing their machines to the limit, chain failure isn't an option—it's a catastrophe. The Renthal 420 R1 Works Chain delivers the tensile strength and wear resistance needed to...R1420120- SKU:
- R1420120
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 250 CC
- TENSILE STRENGTH IMPERIAL:
- 4601 LB
- TENSILE STRENGTH METRIC:
- 20.5 KN
- CHAIN TYPE:
- 420 R1
- MASTER LINK CONNECTOR:
- CLIP
- PRODUCT NAME:
- DRIVE CHAIN
- SEAL TYPE:
- NON-SEAL
- UNITS:
- EACH
- MATERIAL:
- STEEL ALLOY
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- GOLD
- NUMBER OF LINKS:
- 120
- RIDING STYLE:
- OFF-ROAD
MSRP: $66.96Now: $60.26Was: $66.96Qty in Cart: 0Quantity:Price:MSRP: $66.96Now: $60.26Was: $66.96Subtotal: -
On Sale
Renthal 420 R1 Works Chain 130 Links C246
RENTHAL
MSRP: $73.22Now: $65.90Was: $73.22When you're pushing a high-powered mini racing machine to its limits, chain failure isn't an option. The Renthal 420 R1 Works Chain delivers the tensile strength and load distribution you need to...R1420130- SKU:
- R1420130
- Availability:
- Ships Same Business Day
- Weight:
- 2.44 LBS
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- GOLD
- NUMBER OF LINKS:
- 130
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL ALLOY
- CHAIN TYPE:
- 420 R1
- MASTER LINK CONNECTOR:
- CLIP
- PRODUCT NAME:
- DRIVE CHAIN
- SEAL TYPE:
- NON-SEAL
- UNITS:
- EACH
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 250 CC
- TENSILE STRENGTH IMPERIAL:
- 4601 LB
- TENSILE STRENGTH METRIC:
- 20.5 KN
MSRP: $73.22Now: $65.90Was: $73.22 -
On Sale
Renthal 428 R1 Works Chain 120 Links Gold C267
RENTHAL
MSRP: $88.66Now: $79.79Was: $88.66If you're running a high-powered mini racing machine, chain durability directly impacts your lap times and reliability. The Renthal 428 R1 Works Chain delivers the tensile strength and precision...R1428120- SKU:
- R1428120
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- MASTER LINK CONNECTOR:
- CLIP
- MODEL:
- R1
- TENSILE STRENGTH METRIC:
- 20 KN
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 150 CC
- CHAIN TYPE:
- 428 R1
- COLOR/FINISH:
- GOLD
- NUMBER OF LINKS:
- 130
- RIDING STYLE:
- OFF-ROAD
- SEAL TYPE:
- NON-SEAL
- TENSILE STRENGTH IMPERIAL:
- 4497 LB
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- DRIVE CHAIN
MSRP: $88.66Now: $79.79Was: $88.66 -
On Sale
Renthal 428 R1 Works Chain 130 Links 65 inches C272
RENTHAL
MSRP: $96.09Now: $86.48Was: $96.09Mini racing demands a chain that can handle sustained high RPM loads without sacrificing efficiency—the Renthal 428 R1 Works Chain delivers exactly that. With a 4,946 lb. average tensile strength and...R1428130- SKU:
- R1428130
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- NUMBER OF LINKS:
- 130
- TENSILE STRENGTH IMPERIAL:
- 4497 LB
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- MASTER LINK CONNECTOR:
- CLIP
- MODEL:
- R1
- PRODUCT NAME:
- DRIVE CHAIN
- TENSILE STRENGTH METRIC:
- 20 KN
- CHAIN TYPE:
- 428 R1
- COLOR/FINISH:
- GOLD
- MAXIMUM ENGINE DISPLACEMENT (OFFROAD):
- 150 CC
- RIDING STYLE:
- OFF-ROAD
- SEAL TYPE:
- NON-SEAL
MSRP: $96.09Now: $86.48Was: $96.09 -
On Sale
Renthal 428 R1 Clip-Type Connecting Link C253
RENTHAL
MSRP: $8.26Now: $7.43Was: $8.26The Renthal 428 R1 Clip-Type Connecting Link C253 is your fastest path to a sealed chain connection without tools or specialized equipment. If you're running a 428 R1 Works Chain on your mini racing...R1428ML- SKU:
- R1428ML
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- CHAIN TYPE:
- 428 R1
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- CONNECTING LINK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLIP
- UNITS:
- EACH
- NUMBER OF LINKS:
- 1
MSRP: $8.26Now: $7.43Was: $8.26 -
On Sale
Renthal 48-Tooth Rear Sprocket for Yamaha 520 Chain 150U-520-48GBSI
RENTHAL
MSRP: $99.82Now: $89.84Was: $99.82Rotational mass directly impacts throttle response and acceleration—swap your heavy steel sprocket for Renthal's 7075-T6 aluminum design and feel the difference immediately. Built for mud-heavy...R150A52048- SKU:
- R150A52048
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 48
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TYPE:
- DRIVE
MSRP: $99.82Now: $89.84Was: $99.82
