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I acknowledge that the product(s) being purchased () was/were designed and intended for closed course competition use only. The product(s) is/are neither designed nor intended for use on public roads or land and is against Federal and State regulations to do so. By proceeding with this purchase, I , agree to only use the product(s) for closed course competition.

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TST WORX Pack for Yamaha YZF-R3 2015+ / MT-03 2020+

TST WORX Pack for Yamaha YZF-R3 2015+ and MT-03 2020+ Improve your Yamaha R3 horsepower by 24% Improve torque by 20% Peak horsepower and peak torque both show massive improvements with the TST WORX Pack. Receive a new OEM ECU flashed with the TST WORX Spec tune. Open architecture airbox covers enable more air flow. Left and right airbox covers included. MWR Full Race Air Filter aids in flowing more air while keeping your engine protected.

TST WORX Pack for Yamaha YZF-R3 2015+ / MT-03 2020+

Developed, tested, and proven on our 2019 ASRA MOTO3 National Championship Yamaha R3 Superbike. Get all the parts you need for track day dominance with an added discount on all TST WORX products in the bundle!

All development and testing was performed using the Yoshimura Race ALPHA-T Works Finish Full System Exhaust, however, you will gain comparable numbers using a similar full system exhaust. It is required to have a full system exhaust to reach the full WORX Pack potential.

Want an ECU sent to you instead of shipping yours to our shop for flashing? Select the "OEM ECU Core Charge" option to be sent one of our core ECUs, and if you want a return of the $300 core charge, simply send us your unmodified OEM ECU for a core charge refund. Stock levels vary so we may be temporarily out of the ECU cores specific to your bike, and in that case, it is required to ship your ECU in for flashing. Still not sure about Core Charges? Click HERE to learn more.

If sending in your ECU for a core charge return, your ECU part number MUST MATCH the ECU part number of the one you select and receive in your order. WE ARE NOT ABLE TO ACCEPT AN ECU IF THE PART NUMBERS DO NOT MATCH.


Yamaha YZF-R3 | 2015, 2016, 2017, 2018, 2019, 2020
Yamaha MT-03 | 2020

Advertised discount is ONLY applicable to TST WORX products and does not include Yoshimura R&D, Graves Motorsports, or MWR products.

This bundle does not qualify for free shipping. All items ship when the WORX tuned ECU ships.

This product is part of our Worx Program!

Learn More!
Weight 14.24 LBS
Price: $550.99
ECU Core Options
ECU Part Number (important that this is the exact number from your ECU)
Exhaust System
Air Filter
Velocity Stacks
Airbox Covers
AIS Delete Kit
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If buying this product as part of the Buy Together bundle below, define these options there.

This kit was designed and intended for closed course competition use ONLY. These products are neither designed nor intended for use on public roads or land and it is against Federal and State regulations to do so.

Learn About the WORX Pack



Bundle Features

  • All "bolt-on" items that don't require permanent modifications to your Yamaha R3 or MT-03
  • Improves total engine performance with a unique parts pack with TST WORX specific tune on OEM ECU 
  • Smooth and rideable power delivery
  • Immediate and noticeable change in engine performance and output
  • Increases performance across the whole RPM range
  • Improves acceleration and top speed
  • All parts fully optimized to work together for total performance increases
  • Dramatic weight savings when compared to stock components
  • Tune and all testing performed using the Yoshimura ALPHA-T Full System Exhaust - Other full system exhaust *should* deliver similar results

Performance Numbers

When all parts are properly installed, below are the expected results when paired with the optional Yoshimura ALPHA-T Full System Exhaust

Horsepower 24% Increase in area under the curve*
Peak Horsepower 15% Increase
Torque 20% Increase in area under the curve*
Peak Torque 3-7% Increase - dependant on gear
Weight Savings 11.36 lbs

Area under the curve (also called engine potential) is used to represent total engine performance increase as it takes into consideration the gains across the entire RPM range, not just increase in a peak number.

*Premium 91-93 octane fuel is required for expected results and safety against knock.


After over a thousand dyno runs, multiple test bikes, numerous lap records, and one MOTO3 ASRA National Championship trophy, the TST WORX Pack was born. Our engineering team spent over a year performing research, testing, and refining the parts package that you see here. Every component was chosen or specifically designed to be entirely bolt-on, meaning that you don't need to permanently modify your R3 or MT-03 in any way and that you receive the highest performance boost for your dollar that we could design. With every part optimized to work with the entire parts package, the TST WORX Tune is the icing on the metaphorical R3 / MT-03 cake that elevates this package to another level and takes full advantage of the components. Tuning each cylinder individually enabled us to refine the performance of the engine for not only increased performance and peak power, but overall rideability and power delivery. The smooth power output and increased torque and horsepower combine to provide an immediate and noticeable increase that is sure to slap a grin on your face every time you turn the throttle

Please see the "What's Included" tab to learn more about each individual product in the WORX Pack.

Sound Comparison


10% Discount applied to all TST WORX items | Not applied to MWR products or the optional Yoshimura or Graves exhaust systems
Click on item for more details



  1. Increased rev limit of 13,000 RPM
    1. 13,000 RPM rev limit has been thoroughly tested and proven to work safely with the stock valvetrain
    2. Increasing the redline taps into additional power availability and puts the rider higher into the rpm range for the next gear on each shift, allowing them to be better positioned in the RPM range
  2. Changes fueling to take advantage of every bolt-on part included in the bundle
  3. Eliminates OEM air injection system (AIS)
  4. Eliminates factory closed loop O2 system
  5. Eliminates fuel injector deceleration cut for easier corner entry and braking
  6. Remapped fuel tables for cylinder 1 and 2 separately across multiple throttle openings enable a smooth power delivery
  7. Remapped ignition timing helps torque production and throttle response

TST WORX Velocity Stacks

  1. Bolt-on installation
  2. Rigid design as opposed to the stock rubber units
  3. Optimized two-length design provides smooth power delivery
  4. Increases cylinder volumetric efficiency

TST WORX Airbox Covers

  1. Modified OEM Yamaha covers with an open architecture
  2. Provides better airflow for engine air intake
  3. Machine modified using a sophisticated cutting technique
  4. Bolt-on covers - reversible anytime

TST WORX Smog Block Off Kit

  1. CNC machined from high-grade aluminum
  2. Availalbe in natural raw aluminum or with a durable black anodized finish
  3. Eliminates the Air Injection System
  4. Responsible for over a pound of total weight loss

MWR Air Filter for Yamaha R3 / MT-03

  1. Used on all Team TST race bikes
  2. Provides increased airflow compared to the OEM filter
  3. Unique shape that enables increased and stable airflow to the engine
  4. Comes pre-oiled and ready to install


All WORX Pack development, testing, and reported power gains were achieved using the Yoshimura ALPHA-T Full System Exhaust, however, you will gain comparable numbers using a similar full-system exhaust.

If you do not have a full system exhaust already, installing one is a must if you want to gain the full benefit of the TST WORX Pack. Click on any of the full-systems exhausts from Yoshimura or Graves Motorsports to see more details and photos, then simply choose the exhaust you want to include in the options above.

MT-03 FITMENT NOTE: The lower shroud on the 2020+ MT-03 may interfere with the exhaust headers and may need to be left off or modified for proper fitment.

No OEM ECU Core Charge

Select this option if you want to send us your OEM ECU for us to tune and send back to you. You are responsible for shipping the ECU to us originally, so please be sure to pack it neatly with proper padding. Average turnaround time is 2-3 days, depending on any weather or family emergencies. Please print off your order confirmation and include that with the ECU.

OEM ECU Core Charge

Select this option if you want to receive one of our core ECUs that is already flashed. This option enables you to have two ECUs and minimal downtime for installation. If you don't need your original OEM ECU, you can send it back to us and receive a Core Charge refund of $300. It is your responsibility to properly package and ship the OEM ECU when requesting a core charge refund. Please ensure to include the original packing slip and that the OEM ECU is free of any damage, modifications, or contaminants. Your ECU part number must match the part number of the ECU you selected and received and must not be previously flashed with any technology other than FTECU. To read our full policy on Core Charge Refunds, please see our Terms & Conditions page.

If sending in your ECU for a core charge return, your ECU part number MUST MATCH the ECU part number of the one you select and receive in your order. WE ARE NOT ABLE TO ACCEPT AN ECU IF THE PART NUMBERS DO NOT MATCH.

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