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 49-Tooth Rear Sprocket for Kawasaki 520 Chain Black 112U-520-49GEBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a Kawasaki with a 520 chain, sprocket wear directly impacts your power delivery and acceleration. The Renthal 49-tooth rear sprocket replaces the weak link in your drivetrain with a...12110016- SKU:
- 12110016
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Black 52-Tooth Rear Sprocket for Kawasaki 112U-520-52GEBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 520 chain setup on your Kawasaki, sprocket wear directly impacts acceleration, chain life, and overall drivetrain efficiency. The Renthal 52-tooth rear sprocket combines...12110019- SKU:
- 12110019
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- MOUNTING POSITION:
- REAR
- TOOTH COUNT:
- 52
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
RENTHAL Sprocket - Suzuki - Black - 49-Tooth 123U-520-49GYBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95A lightweight sprocket is essential for reducing unsprung weight and improving acceleration response, especially in competitive riding where every gram impacts performance. RENTHAL's 49-tooth design...12110021- SKU:
- 12110021
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- TOOTH COUNT:
- 49
- TYPE:
- DRIVE
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 50T Rear Sprocket for Suzuki RM125 RM250 RMZ450 DRZ400 123U-520-50GYBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a Suzuki dirt bike or dual-sport, your rear sprocket is doing heavy lifting—literally. The Renthal 50T sprocket cuts unsprung weight by 66% compared to steel alternatives, which...12110022- SKU:
- 12110022
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Ultralight Rear Sprocket 52T Black 123U-520-52GYBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95A lightweight rear sprocket directly improves throttle response and acceleration while reducing unsprung weight that impacts handling and braking performance. The Renthal Ultralight's 7075-T6...12110024- SKU:
- 12110024
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- 7075-T6 ALUMINUM
- TOOTH COUNT:
- 52
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 49-Tooth Black Rear Sprocket for Yamaha 150U-520-49GBBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 520 chain on your Yamaha, sprocket wear directly impacts acceleration, chain longevity, and overall drivetrain efficiency. The Renthal 49-Tooth Rear Sprocket delivers the...12110026- SKU:
- 12110026
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Rear Sprocket 51T Black 520 Chain 150U-520-51GBBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 51-tooth rear sprocket on your Yamaha, upgrading to Renthal's 7075-T6 aluminum design cuts unsprung weight while maintaining the durability you need for consistent power delivery...12110028- SKU:
- 12110028
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- 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 Black 52-Tooth Rear Sprocket for Yamaha 150U-520-52GBBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95A lightweight rear sprocket directly impacts your bike's acceleration, handling, and overall responsiveness—especially critical in competitive racing where every pound matters. The Renthal 52-Tooth...12110029- SKU:
- 12110029
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 50-Tooth Black Aluminum Rear Sprocket for Honda 154U-520-50GRBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 50-tooth rear sprocket on your Honda, you need one that won't compromise acceleration or add unnecessary rotating mass. The Renthal 50-Tooth Black Aluminum Rear Sprocket delivers...12110032- SKU:
- 12110032
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Ultralight Rear Sprocket 52T 520 Chain Black 154U-520-52GRBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95Rotational mass directly impacts acceleration and chassis responsiveness—this is where a lightweight rear sprocket makes a measurable difference. The Renthal Ultralight 52T reduces unsprung weight by...12110034- SKU:
- 12110034
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- 7075-T6 ALUMINUM
- TOOTH COUNT:
- 52
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 48-Tooth Black Rear Sprocket for KTM 224U-520-48GPBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 520 chain on your KTM, sprocket wear directly impacts throttle response and chain longevity. The Renthal 48-tooth rear sprocket replaces stock with a lightweight 7075-T6 aluminum...12110045- SKU:
- 12110045
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 48
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
MSRP: $104.95Now: $94.46Was: $104.95Qty in Cart: 0Quantity:Price:MSRP: $104.95Now: $94.46Was: $104.95Subtotal: -
On Sale
Renthal 49-Tooth Rear Sprocket Black 520 Chain KTM 224U-520-49GPBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 49-tooth rear sprocket on your KTM, you need a component engineered for the demands of motocross and enduro racing—not a compromise. The Renthal 49-Tooth Rear Sprocket delivers...12110046- SKU:
- 12110046
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 50-Tooth Black Rear Sprocket for KTM 224U-520-50GPBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95Shave unsprung weight from your KTM without sacrificing durability—the Renthal 50-Tooth Rear Sprocket delivers 66% weight savings compared to steel while maintaining the strength you need for...12110047- SKU:
- 12110047
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Ultralight Rear Sprocket 52T Black 224U-520-52GPBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a KTM off-road machine, the stock rear sprocket is likely adding unnecessary weight while collecting mud buildup that accelerates wear. The Renthal Ultralight 52T delivers a...12110049- SKU:
- 12110049
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- UNITS:
- EACH
- TYPE:
- DRIVE
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 45-Tooth 520 Rear Sprocket for KTM 224U-520-45GPSI
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95Shaving 66% of the weight off your rear sprocket has a direct impact on acceleration, handling, and your ability to control the bike under load. The Renthal 45-tooth sprocket cuts unsprung mass...12110078- SKU:
- 12110078
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal Ultralight Rear Sprocket 46T 520 Chain KTM Husqvarna Husaberg 224U-520-46GPSI
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95Unsprung weight directly impacts acceleration, handling, and how quickly your bike responds to throttle input—and this Renthal ultralight sprocket cuts that weight by 66% compared to steel...12110079- SKU:
- 12110079
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 50-Tooth Rear Sprocket for KTM 65 SX 192U-420-50GPSI
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95A lightweight rear sprocket is one of the most effective ways to improve acceleration and throttle response on your KTM 65 SX—and this Renthal 50-tooth sprocket delivers exactly that. By cutting...12110087- SKU:
- 12110087
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 47-Tooth Rear Sprocket for KTM 85 SX 17/14 85 SX 19/16 105 SX 441U-428-47GPSI
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running KTM 85 SX or 105 SX, the stock rear sprocket is costing you performance. The Renthal 47-tooth sprocket cuts unsprung weight by 66% compared to steel alternatives, directly improving...12110089- SKU:
- 12110089
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- MATERIAL:
- 7075-T6 ALUMINUM
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 50-Tooth Rear Sprocket for KTM 85 SX 17/14 85 SX 19/16 105 SX 441U-428-50GPSI
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95When you're pushing hard on the track or battling through muddy terrain, every gram counts. The Renthal 50-Tooth Rear Sprocket cuts weight by 66% compared to steel without compromising durability,...12110092- SKU:
- 12110092
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
MSRP: $104.95Now: $94.46Was: $104.95 -
On Sale
Renthal 53-Tooth Rear Sprocket for Honda 154U-520-53GRBK
RENTHAL
MSRP: $104.95Now: $94.46Was: $104.95If you're running a 520 chain on your Honda, a lightweight rear sprocket is one of the quickest ways to improve acceleration and reduce rotational mass without breaking the bank. The Renthal 53-tooth...12110179- SKU:
- 12110179
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 53
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
MSRP: $104.95Now: $94.46Was: $104.95
