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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HOT RODS Transmission Bearings Kit TBK0019
HOT RODS
$151.95A transmission rebuild demands precision at every contact point—worn or inadequate bearings will compromise shift quality, increase parasitic loss, and accelerate component wear. The HOT RODS Transmission Bearings Kit TBK0019 supplies OEM-grade bearings...11060108- SKU:
- 11060108
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$151.95Qty in Cart: 0Quantity:Price:$151.95Subtotal: -
HOT RODS Transmission Bearings Kit TBK0059
HOT RODS
$151.95A complete bearing refresh is essential when rebuilding or installing a new transmission—worn bearings compromise shift quality, increase friction, and accelerate wear on other components. The HOT RODS Transmission Bearings Kit TBK0059 supplies...11060138- SKU:
- 11060138
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
$151.95 -
HOT RODS Transmission Bearings Kit TBK0086
HOT RODS
$116.95Whether you're rebuilding a transmission from the ground up or performing a case installation, bearing wear is a silent killer of shift quality and drivetrain longevity. The HOT RODS Transmission Bearings Kit TBK0086 delivers OEM-grade bearings...11060165- SKU:
- 11060165
- Availability:
- Ships Same Business Day
- Weight:
- 1.08 LBS
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
$116.95 -
HOT RODS Transmission Bearings Kit TBK0092
HOT RODS
$75.95Transmission bearing wear is one of the leading causes of premature gearbox failure, especially in high-performance or rebuilt applications. The HOT RODS Transmission Bearings Kit TBK0092 provides OEM-quality replacements for critical load-bearing...11060170- SKU:
- 11060170
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TRANSMISSION
$75.95 -
HOT RODS Transmission Bearings Kit TBK0094
HOT RODS
$138.95A complete transmission bearing refresh is essential for any rebuild or new installation—compromised bearings lead to premature wear, noise, and catastrophic failure. The HOT RODS TBK0094 delivers OEM-quality bearings across all critical shaft positions,...11060171- SKU:
- 11060171
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- STREET
$138.95 -
HOT RODS Transmission Bearings Kit TBK0098
HOT RODS
$151.95A complete transmission bearing refresh is essential for any new transmission installation or full engine case rebuild—worn or damaged bearings compromise shift quality, increase parasitic losses, and accelerate wear on adjacent components. This kit...11060175- SKU:
- 11060175
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- TYPE:
- TRANSMISSION
$151.95Qty in Cart: 0Quantity:Price:$151.95Subtotal: -
HOT RODS Transmission Bearings Kit TBK0102
HOT RODS
$151.95A transmission rebuild demands precision-engineered bearings that can handle the constant stress of shaft rotation and power transfer. The HOT RODS Transmission Bearings Kit TBK0102 delivers OEM-quality components specifically engineered for primary and...11060179- SKU:
- 11060179
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$151.95Qty in Cart: 0Quantity:Price:$151.95Subtotal: -
On Sale
JT SPROCKETS Sprocket - Rear - Honda - 38-Tooth JTR1350.38
JT SPROCKETS
MSRP: $23.38Now: $20.81Was: $23.38A worn or mismatched rear sprocket directly impacts your power delivery, acceleration, and overall drivetrain efficiency. This 38-tooth JT sprocket is engineered from aviation-grade materials and precision-machined to tight tolerances, ensuring...JTR135038- SKU:
- JTR135038
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MATERIAL:
- STEEL
- MODEL:
- HONDA
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 38
MSRP: $23.38Now: $20.81Was: $23.38 -
On Sale
JT SPROCKETS Sprocket - Rear - Kawasaki/Suzuki - 50-Tooth JTR461.50
JT SPROCKETS
MSRP: $24.33Now: $21.65Was: $24.33A properly sized rear sprocket is critical to optimizing your power delivery, acceleration, and top-end performance. The JT Sprockets 50-Tooth rear sprocket delivers the precision engineering and durability required for consistent lap times and reliable...JTR46150- SKU:
- JTR46150
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 420
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
MSRP: $24.33Now: $21.65Was: $24.33 -
On Sale
JT SPROCKETS Sprocket - Rear - Yamaha - 41-Tooth JTR853.41
JT SPROCKETS
MSRP: $23.53Now: $20.94Was: $23.53A worn or mismatched rear sprocket robs your Yamaha of acceleration, fuel efficiency, and overall drivetrain reliability. The JT Sprockets 41-tooth rear sprocket delivers the precision engineering and durability you need to maintain peak performance,...JTR85341- SKU:
- JTR85341
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 41
- UNITS:
- EACH
MSRP: $23.53Now: $20.94Was: $23.53 -
On Sale
JT SPROCKETS Sprocket - Rear - Yamaha - 44-Tooth JTR853.44
JT SPROCKETS
MSRP: $27.00Now: $24.03Was: $27.00A worn or incorrect rear sprocket directly impacts your bike's acceleration, top-end speed, and overall drivetrain efficiency. The JT Sprockets 44-tooth rear sprocket delivers precise power delivery and reliable engagement cycle after cycle, whether...JTR85344- SKU:
- JTR85344
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 44
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $27.00Now: $24.03Was: $27.00 -
On Sale
JT SPROCKETS Sprocket - Rear - Yamaha - 46-Tooth JTR853.46
JT SPROCKETS
MSRP: $27.78Now: $24.72Was: $27.78A worn or incorrect rear sprocket compromises acceleration, top-end performance, and chain longevity—three factors that separate winning rides from mechanical failures. The JT Sprockets 46-tooth rear sprocket delivers computer-optimized tooth geometry...JTR85346- SKU:
- JTR85346
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- ATV
- TOOTH COUNT:
- 46
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
MSRP: $27.78Now: $24.72Was: $27.78 -
On Sale
JT SPROCKETS Rear Sprocket - 49-Tooth - Beta/Honda JTR210.49SC
JT SPROCKETS
MSRP: $32.98Now: $29.35Was: $32.98A properly matched rear sprocket is critical to your bike's acceleration, top speed, and overall driveability. The JT Sprockets 49-tooth rear sprocket delivers the precision engineering and durability you need for consistent performance, whether you're...12102436- SKU:
- 12102436
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 49
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- SELF-CLEANING
MSRP: $32.98Now: $29.35Was: $32.98 -
On Sale
JT SPROCKETS Rear Sprocket - 50-Tooth - Beta/Honda JTR210.50SC
JT SPROCKETS
MSRP: $32.98Now: $29.35Was: $32.98A properly sized rear sprocket is critical to maximizing your bike's acceleration, top-end speed, and overall drivetrain efficiency. This 50-tooth sprocket is engineered for riders who demand precision fitment and reliable performance through...12102437- SKU:
- 12102437
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- CHAIN SIZE:
- 520
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $32.98Now: $29.35Was: $32.98 -
On Sale
JT SPROCKETS Rear Sprocket - 49-Tooth - Yamaha JTR251.49SC
JT SPROCKETS
MSRP: $32.98Now: $29.35Was: $32.98A rear sprocket is one of the highest-wear components on your drivetrain, and JT's 49-tooth design combines precision engineering with proven durability to keep your power delivery consistent lap after lap. Whether you're chasing track times or...12102442- SKU:
- 12102442
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- CHAIN SIZE:
- 520
- MATERIAL:
- STEEL
- UNITS:
- EACH
MSRP: $32.98Now: $29.35Was: $32.98 -
On Sale
JT SPROCKETS Rear Sprocket - 50-Tooth - Kawasaki JTR460.50SC
JT SPROCKETS
MSRP: $32.98Now: $29.35Was: $32.98A properly sized rear sprocket is critical for optimizing your Kawasaki's acceleration, top speed, and engine efficiency. The JT 50-tooth rear sprocket delivers the exact gearing you need for responsive performance without sacrificing reliability. Built...12102447- SKU:
- 12102447
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 50
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
MSRP: $32.98Now: $29.35Was: $32.98 -
On Sale
JT SPROCKETS Rear Sprocket - 51-Tooth - Kawasaki JTR460.51SC
JT SPROCKETS
MSRP: $32.98Now: $29.35Was: $32.98A properly sized rear sprocket is critical to maximizing your Kawasaki's acceleration, top speed, and engine efficiency. The JT 51-tooth rear sprocket delivers the precision engineering and durability demanded by riders who refuse compromises on...12102448- SKU:
- 12102448
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- UNITS:
- EACH
MSRP: $32.98Now: $29.35Was: $32.98 -
On Sale
JT SPROCKETS Rear Sprocket - 50-Tooth - Kawasaki/Suzuki JTR808.50SC
JT SPROCKETS
MSRP: $32.98Now: $29.35Was: $32.98Optimizing your sprocket ratio is one of the most direct ways to dial in acceleration, top-end performance, and overall driveability on your Kawasaki or Suzuki. The JT Sprockets 50-tooth rear sprocket delivers the engineering precision and durability you...12102451- SKU:
- 12102451
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- CHAIN SIZE:
- 520
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- MATERIAL:
- STEEL
- UNITS:
- EACH
MSRP: $32.98Now: $29.35Was: $32.98 -
On Sale
JT SPROCKETS Sprocket - Rear - KTM - 46-Tooth JTR895.46
JT SPROCKETS
MSRP: $21.48Now: $19.12Was: $21.48A quality rear sprocket is fundamental to your drivetrain's efficiency and longevity. This 46-tooth JT sprocket delivers the precision engineering and durability demanded by serious riders, reducing rotating weight while maintaining the strength needed...12100663- SKU:
- 12100663
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 LBS
- CHAIN SIZE:
- 428
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 46
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
MSRP: $21.48Now: $19.12Was: $21.48 -
On Sale
JT SPROCKETS Sprocket - Suzuki - 39-Tooth JTR808.39
JT SPROCKETS
MSRP: $26.48Now: $23.57Was: $26.48A worn or damaged sprocket directly impacts acceleration, top-end speed, and drivetrain efficiency—making a quality replacement critical for both track performance and reliability. The JT Sprockets 39-tooth sprocket delivers consistent engagement with...12100688- SKU:
- 12100688
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TOOTH COUNT:
- 39
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
MSRP: $26.48Now: $23.57Was: $26.48
