Street Bike Drivetrain
Street Bike Drivetrain Parts at JJ Motorsports
Upgrade your street bike's drivetrain for smoother power delivery and longevity with components from JJ Motorsports. Our range includes chains, sprockets, drive belts, transmission covers, and more, designed for reduced wear, better acceleration, and reliable performance on the road or track. Compatible with Honda, Kawasaki, Suzuki, and other models, these parts feature high-strength materials, precise fitment, and easy installation for sportbikes, cruisers, or tourers.
Shop trusted brands like JT Sprockets for durable sprockets and Drag Specialties for reinforced belts. Explore related subcategories such as street bike rear sprockets for gear ratios or street bike drive belts for belt-driven systems.
Top Street Bike Drivetrain Products
- JT Chains 420 HDR Heavy Duty Drive Chain - Steel - 100 Links – Ideal for up to 150cc engines with enhanced strength.
- JT Sprockets Sprocket Rear Kawasaki 42-Tooth JTR1489.42 – Steel construction for minimum weight and maximum durability.
- Drag Specialties Rear Drive Belt 136-Tooth 1 1/2" BDL SPC-136 – Carbon fiber reinforced for superior strength on belt-driven bikes.
- Trask Transmission Cover M8 TM-2041CH – Billet aluminum for a custom look and protection on M8 engines.
- Driven Racing Rear Sprocket 43-Tooth 5063-520-43T – Precision-machined for optimal gear performance and lightweight design.
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
-
On Sale
JT SPROCKETS Rear Sprocket - 31 Tooth - Z 125 Pro JTR801.31
JT SPROCKETS
MSRP: $14.73Now: $13.11Was: $14.73If you're running a Z 125 Pro, rear sprocket wear directly impacts acceleration response and top-end performance. A worn sprocket creates slack in your chain drive, robbing you of power transfer...12102724- SKU:
- 12102724
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
MSRP: $14.73Now: $13.11Was: $14.73 -
On Sale
JT SPROCKETS Rear Sprocket - 33 Tooth - XS650 JTR850.33
JT SPROCKETS
MSRP: $32.53Now: $28.95Was: $32.53A properly sized rear sprocket is critical for optimizing your XS650's acceleration, top-end speed, and overall powertrain efficiency. The 33-tooth JT Sprockets rear sprocket delivers the precision...12102734- SKU:
- 12102734
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
MSRP: $32.53Now: $28.95Was: $32.53 -
On Sale
JT SPROCKETS Countershaft Sprocket - 13 Tooth - Honda JTF270.13
JT SPROCKETS
MSRP: $13.78Now: $12.26Was: $13.78A properly sized countershaft sprocket is critical for optimizing your Honda's power delivery and acceleration characteristics. This 13-tooth configuration provides the ideal balance between top-end...12120564- SKU:
- 12120564
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
MSRP: $13.78Now: $12.26Was: $13.78Qty in Cart: 0Quantity:Price:MSRP: $13.78Now: $12.26Was: $13.78Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Suzuki JTF434.14
JT SPROCKETS
MSRP: $12.55Now: $11.17Was: $12.55A worn or damaged countershaft sprocket directly impacts power delivery and throttle response—compromising both acceleration and overall drivetrain efficiency. This JT Sprockets 14-tooth countershaft...12120788- SKU:
- 12120788
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $12.55Now: $11.17Was: $12.55Qty in Cart: 0Quantity:Price:MSRP: $12.55Now: $11.17Was: $12.55Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Honda JTF339.15
JT SPROCKETS
MSRP: $20.33Now: $18.09Was: $20.33A countershaft sprocket directly influences your Honda's acceleration curve and power delivery characteristics. If you're running stock gearing and feel a lag in throttle response or need quicker...12120794- SKU:
- 12120794
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
MSRP: $20.33Now: $18.09Was: $20.33 -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - KTM JTF1903.14
JT SPROCKETS
MSRP: $13.75Now: $12.24Was: $13.75A worn or damaged countershaft sprocket directly degrades power delivery and throttle response on your KTM—this JT Sprockets 14-tooth replacement restores precise engagement and chain control...12120932- SKU:
- 12120932
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
MSRP: $13.75Now: $12.24Was: $13.75 -
On Sale
JT SPROCKETS Countershaft Sprocket - 18 Tooth - Kawasaki JTF1537.18
JT SPROCKETS
MSRP: $23.83Now: $21.21Was: $23.83A worn or undersized countershaft sprocket directly impacts your power delivery, throttle response, and overall gear ratio performance. This JT Sprockets 18-tooth unit is engineered for maximum...12120945- SKU:
- 12120945
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
MSRP: $23.83Now: $21.21Was: $23.83Qty in Cart: 0Quantity:Price:MSRP: $23.83Now: $21.21Was: $23.83Subtotal: -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Honda JTF1370.14
JT SPROCKETS
MSRP: $19.70Now: $17.53Was: $19.70A worn or damaged countershaft sprocket directly impacts power delivery and acceleration consistency across the entire rev range. The JT Sprockets 14-tooth countershaft sprocket restores precise...12121148- SKU:
- 12121148
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
MSRP: $19.70Now: $17.53Was: $19.70 -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Honda JTF1373.15
JT SPROCKETS
MSRP: $23.10Now: $20.56Was: $23.10A worn or mismatched countershaft sprocket directly impacts your Honda's acceleration, throttle response, and overall drivetrain efficiency. The JT Sprockets 15-tooth countershaft sprocket delivers...12121149- SKU:
- 12121149
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
MSRP: $23.10Now: $20.56Was: $23.10 -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - KTM JTF1903.15
JT SPROCKETS
MSRP: $14.40Now: $12.82Was: $14.40A 15-tooth countershaft sprocket is essential for maximizing acceleration and throttle response on your KTM, delivering quicker power delivery off the line. Precision-engineered from SCM420 chromoly...12121158- SKU:
- 12121158
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
MSRP: $14.40Now: $12.82Was: $14.40 -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - KTM JTF1904.15
JT SPROCKETS
MSRP: $21.70Now: $19.31Was: $21.70A properly-sized countershaft sprocket is essential for optimizing your KTM's power delivery and acceleration characteristics. This 15-tooth configuration provides the ideal balance between throttle...12121159- SKU:
- 12121159
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
MSRP: $21.70Now: $19.31Was: $21.70 -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Honda JTF333.14
JT SPROCKETS
MSRP: $23.13Now: $20.59Was: $23.13A worn or damaged countershaft sprocket directly compromises your engine's power delivery and acceleration response. This JT Sprockets 14-tooth unit restores precise gear engagement, ensuring...12121162- SKU:
- 12121162
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
MSRP: $23.13Now: $20.59Was: $23.13 -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - S 1000 JTF404.15
JT SPROCKETS
MSRP: $19.80Now: $17.62Was: $19.80A countershaft sprocket is fundamental to your drivetrain's efficiency and responsiveness. This 15-tooth JT sprocket is computer-optimized to deliver maximum strength without unnecessary...12121166- SKU:
- 12121166
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
MSRP: $19.80Now: $17.62Was: $19.80 -
On Sale
JT SPROCKETS Countershaft Sprocket - 16 Tooth - Ducati JTF736.16
JT SPROCKETS
MSRP: $28.18Now: $25.08Was: $28.18Upgrading your countershaft sprocket is one of the most direct ways to tune your Ducati's acceleration and top-end performance. The 16-tooth design shifts your power band forward, giving you quicker...12121171- SKU:
- 12121171
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
MSRP: $28.18Now: $25.08Was: $28.18 -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Husqvarna/KTM JTF1908.15
JT SPROCKETS
MSRP: $13.60Now: $12.10Was: $13.60Whether you're chasing lap times or maximizing everyday ride quality, your countershaft sprocket directly impacts acceleration response and engine efficiency. The JT Sprockets 15-tooth design...12121308- SKU:
- 12121308
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
MSRP: $13.60Now: $12.10Was: $13.60 -
On Sale
JT SPROCKETS Countershaft Sprocket - 16 Tooth - GSXR1000 JTF444.16
JT SPROCKETS
MSRP: $20.00Now: $17.80Was: $20.00The countershaft sprocket is a critical drivetrain component that directly affects your GSXR1000's acceleration response and power delivery. A worn or damaged sprocket degrades shift quality and can...12121313- SKU:
- 12121313
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
MSRP: $20.00Now: $17.80Was: $20.00 -
On Sale
JT SPROCKETS Countershaft Sprocket - 17 Tooth - GSXR1000 JTF444.17
JT SPROCKETS
MSRP: $20.00Now: $17.80Was: $20.00Your GSXR1000's power delivery hinges on precise sprocket engagement—worn or inferior countershaft sprockets introduce slack, missed shifts, and accelerated chain wear. The JT Sprockets 17-tooth...12121314- SKU:
- 12121314
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
MSRP: $20.00Now: $17.80Was: $20.00 -
On Sale
JT SPROCKETS Countershaft Sprocket - 14 Tooth - Panigale JTF748.14
JT SPROCKETS
MSRP: $18.90Now: $16.82Was: $18.90A properly sized countershaft sprocket is critical for optimizing your Panigale's power delivery and maintaining reliable gear engagement under high-RPM racing conditions. This 14-tooth sprocket...12121318- SKU:
- 12121318
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
MSRP: $18.90Now: $16.82Was: $18.90 -
On Sale
JT SPROCKETS Countershaft Sprocket - 15 Tooth - Ducati JTF749.15
JT SPROCKETS
MSRP: $22.68Now: $20.19Was: $22.68A lighter countershaft sprocket reduces rotational inertia and sharpens your Ducati's throttle response—critical for both track performance and street acceleration. The JT 15-tooth design maintains...12121320- SKU:
- 12121320
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
MSRP: $22.68Now: $20.19Was: $22.68 -
On Sale
JT SPROCKETS Countershaft Sprocket - 17 Tooth - Kawasaki/Suzuki JTF565.17
JT SPROCKETS
MSRP: $11.88Now: $10.57Was: $11.88A worn or damaged countershaft sprocket directly compromises your bike's acceleration, throttle response, and overall drivetrain efficiency. The JT Sprockets 17-tooth countershaft sprocket is...12121321- SKU:
- 12121321
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
MSRP: $11.88Now: $10.57Was: $11.88
