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
-
Renthal 14-Tooth Front Sprocket for Suzuki DR-Z250 DR-Z400E DR-Z400S DR-Z400SM RM250 RMX250 255--520-14GP
RENTHAL
$37.95A worn or inefficient front sprocket robs your DR-Z of acceleration and forces your engine to work harder than necessary. The Renthal 14-tooth front sprocket cuts rotating mass while maintaining durability, giving you quicker throttle response and...R25552014- SKU:
- R25552014
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- TOOTH COUNT:
- 14
$37.95 -
Renthal Front Sprocket 13T 428 Chain Yamaha YZ85 2002-2026 257--428-13GP
RENTHAL
$37.95A worn or poorly designed front sprocket directly impacts your YZ85's acceleration response, chain wear rate, and overall drivetrain efficiency. The Renthal 13-tooth sprocket eliminates these weak points with case-hardened construction and precision CNC...R25742813- SKU:
- R25742813
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 13
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
$37.95 -
Renthal 14T Front Sprocket 420 Chain Kawasaki KX100 KX85 KX65 KX60 KX80 KX85 258--420-14GP
RENTHAL
$37.95If you're running a Kawasaki pit bike or off-road machine, your front sprocket takes a beating from dirt, mud, and constant chain tension. The Renthal 14T front sprocket swaps out weak OEM components for case-hardened nickel-chromium steel that resists...R25842014- SKU:
- R25842014
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 14
- CHAIN SIZE:
- 420
- UNITS:
- EACH
$37.95 -
Renthal 15-Tooth Front Sprocket for Honda XR600R 1991-2000 and XR650L 1993-2025 282--520-15GP
RENTHAL
$37.95A worn or undersized front sprocket forces your engine to work harder, cutting into acceleration and throttle response when you need it most. The Renthal 15-Tooth Front Sprocket delivers the durability and precision geometry that competitive riders...R28252015- SKU:
- R28252015
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- TOOTH COUNT:
- 15
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- 655M13 NICKEL CHROMIUM STEEL
- PRODUCT NAME:
- SPROCKET
$37.95 -
Renthal 15T Front Sprocket for Kawasaki KX250 KLX300R 289--520-15GP
RENTHAL
$37.95A worn or damaged front sprocket directly compromises acceleration, chain life, and overall drivetrain efficiency. The Renthal 15T Front Sprocket delivers precision engineering and durability-focused design that keeps your power delivery sharp and your...R28952015- SKU:
- R28952015
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 15
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- TYPE:
- COUNTERSHAFT
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
$37.95 -
Renthal 14-Tooth Front Sprocket for Husqvarna KTM 520 Chain 292--520-14GP
RENTHAL
$37.95Mud buildup and weight penalty will kill your acceleration and handling in the roughest terrain—this Renthal front sprocket eliminates both. The CNC-machined self-cleaning grooves shed debris on every rotation, while the 655M13 nickel-chromium steel core...R29252014- SKU:
- R29252014
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 14
- PRODUCT NAME:
- SPROCKET
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$37.95 -
Renthal 12-Tooth Front Sprocket for Kawasaki KX125 1992-2005 337-520-12GP
RENTHAL
$37.95If you're running a KX125 hard, your sprocket is one of the first components to show wear under sustained throttle and chain tension. The Renthal 12-Tooth Front Sprocket replaces that wear item with a precision-engineered alternative that shaves 10-15%...R33752012- SKU:
- R33752012
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- MATERIAL:
- STEEL
- CHAIN SIZE:
- 520
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 12
$37.95 -
Renthal Ultralight Rear Sprocket 49T 520 Chain Silver 131U-520-49GBSI
RENTHAL
$99.82The Renthal Ultralight Rear Sprocket puts noticeable acceleration gains directly under your control without sacrificing durability. At 66% lighter than steel, this 7075-T6 aluminum sprocket reduces unsprung mass and rotational inertia—changes you'll feel...R13149- SKU:
- R13149
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
$99.82 -
Renthal Ultralight Rear Sprocket 51T 520 Chain Silver 131U-520-51GBSI
RENTHAL
$99.82If you're running a 520 chain setup and want measurable gains in acceleration and handling, this Renthal sprocket delivers through weight reduction and engineering precision. The 7075-T6 aluminum construction cuts rotating mass by 66% compared to steel—a...R13151- SKU:
- R13151
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$99.82 -
Renthal 420 R1 Clip Connecting Link Gold C227
RENTHAL
$8.26A worn or damaged master link can compromise your entire chain's integrity, creating safety risks and unpredictable performance on the trail. The Renthal 420 R1 Clip Connecting Link C227 is engineered to the same exacting standards as Renthal's proven...R1420ML- SKU:
- R1420ML
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- COLOR/FINISH:
- GOLD
- PRODUCT NAME:
- CONNECTING LINK
- NUMBER OF LINKS:
- 1
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLIP
- UNITS:
- EACH
$8.26 -
Renthal 47-Tooth Rear Sprocket for Yamaha 150U-520-47GBSI
RENTHAL
$99.82If you're running a 520 chain setup on your Yamaha, sprocket weight directly impacts your bike's acceleration and handling characteristics. The Renthal 47-tooth rear sprocket cuts rotational mass by 66% compared to steel alternatives, translating to...R150A52047- SKU:
- R150A52047
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- SILVER
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 47
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
$99.82 -
Renthal 520 R1 Works Chain Clip Connecting Link C143
RENTHAL
$8.26Chain integrity is non-negotiable in high-performance riding—a failed connecting link can cost you a race or worse. The Renthal 520 R1 Works Chain Clip Connecting Link C143 delivers the secure, tool-free installation you need to get back on track...R1520ML- SKU:
- R1520ML
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- GOLD
- UNITS:
- EACH
- PRODUCT NAME:
- CONNECTING LINK
- TYPE:
- CLIP
- CHAIN TYPE:
- 520 R1
- NUMBER OF LINKS:
- 1
$8.26Qty in Cart: 0Quantity:Price:$8.26Subtotal: -
Renthal 45-Tooth Rear Sprocket for Honda 520 Chain Silver 154U-520-45GRSI
RENTHAL
$99.82If you're running a 520 chain on your Honda, your rear sprocket directly impacts acceleration, top-end speed, and drivetrain longevity. The Renthal 45-Tooth Rear Sprocket replaces steel with precision-engineered 7075-T6 aluminum—cutting rotational mass...R15445- SKU:
- R15445
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 45
- UNITS:
- EACH
$99.82 -
Renthal 50-Tooth Rear Sprocket for Honda CRF250R CRF450R CRF450X 154U-520-50GRSI
RENTHAL
$99.82Shaving unsprung weight off your CRF is one of the most direct ways to improve handling and acceleration—and the Renthal 50-Tooth Rear Sprocket delivers exactly that. Machined from 7075-T6 aluminum and hard anodized for durability, this sprocket cuts...R15450- SKU:
- R15450
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$99.82Qty in Cart: 0Quantity:Price:$99.82Subtotal: -
Renthal 52-Tooth Rear Sprocket for Honda 154U-520-52GRSI
RENTHAL
$99.82Dropping 66% of the weight compared to steel while maintaining full strength, the Renthal 52-Tooth Rear Sprocket directly improves your Honda's acceleration and handling dynamics. The self-cleaning mud grooves eliminate debris buildup that causes uneven...R15452- SKU:
- R15452
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- DRIVE
$99.82 -
Renthal Ultralight Rear Sprocket 50T 420 Chain Silver 191U-420-50GESI
RENTHAL
$99.82Shed unnecessary weight from your drivetrain without sacrificing durability or reliability. The Renthal Ultralight Rear Sprocket delivers a 66% weight reduction over conventional steel, directly improving acceleration and reducing rotational mass on your...R19150- SKU:
- R19150
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
- MATERIAL:
- 7075-T6 ALUMINUM
$99.82 -
Renthal 49-Tooth Rear Sprocket for KTM 224U-520-49GPSI
RENTHAL
$99.82Reducing unsprung weight is one of the most direct ways to improve acceleration and handling responsiveness, and the Renthal 49-Tooth Rear Sprocket delivers exactly that—66% lighter than steel without sacrificing durability. If you're running a KTM and...R22449- SKU:
- R22449
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$99.82 -
Renthal 52-Tooth Ultralight Rear Sprocket for KTM 224U-520-52GPSI
RENTHAL
$99.82If you're running a 52-tooth setup on your KTM, sprocket weight directly impacts your bike's handling and throttle response. The Renthal Ultralight reduces unsprung mass by 66% compared to steel alternatives, translating to sharper cornering and quicker...R22452- SKU:
- R22452
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- SILVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
- TYPE:
- DRIVE
$99.82 -
Renthal 13-Tooth Front Sprocket for Honda CR250R CR500R CRF450R CRF450X CRF450RX CRF450RWE CRF250R CRF250RX TRX450R TRX450ER 253--520-13GP
RENTHAL
$37.95A worn or undersized front sprocket robs your Honda of acceleration and chain efficiency. The Renthal 13-tooth front sprocket delivers a lightweight upgrade that sharpens throttle response while the case-hardened 655M13 steel resists wear from high-RPM...R25352013- SKU:
- R25352013
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 13
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- NATURAL
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COUNTERSHAFT
$37.95Qty in Cart: 0Quantity:Price:$37.95Subtotal: -
Renthal 15-Tooth Front Sprocket for Honda 253--520-15GP
RENTHAL
$37.95A lightweight front sprocket is one of the most direct upgrades to sharpen your Honda's throttle response and acceleration—and Renthal's 15-tooth design delivers measurable weight savings without compromising durability. The case-hardened 655M13...R25352015- SKU:
- R25352015
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 15
- TYPE:
- COUNTERSHAFT
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
$37.95
