TST WORX V2 Velocity Stacks for Kawasaki Ninja 400 2018-2023 / Z400 2019-2023

Increase top end performance of your Kawasaki Ninja 400 or Z400 with one simple installation. Our exclusive TST WORX V2 Velocity Stacks install without any special tools to provide an awesome 5.8% increase in peak power and overall more performance in the top rev range.

Want to read about the extensive research and development that goes into developing a set of TST Velocity Stacks? Check out our blog post HERE where we break down the R&D that went into developing velocity stacks for our in-house Yamaha R3.

Applications: CLOSED COURSE COMPETITION ONLY

Kawasaki Ninja 400 | 2018, 2019, 2020, 2021, 2022, 2023Kawasaki Z400 | 2019, 2020, 2021, 2022, 2023

This product is part of our Worx Program!

Features

• Provides a 5.8% increase in peak power at 10.93 RPM*
• Designed to specifically provide increased top end power
• Supersport legal in CCS and ASRA
• Simple and easy installation that does not require any special tools
• No modification required for installation
• Injection-molded rubber construction is chemical-resistant to withstand gasoline and other harsh chemicals
• Developed through extensive research and testing by the TST Industries WORX Racing Program

Demonstrated power gains were achieved using a Ninja 400 outfitted with WORX V2 Velocity Stacks and comparing them to the same bike outfitted with OEM velocity stacks.

Description

TST headquarters is home to our 2020 ASRA Moto3 National Championship winning Kawasaki Ninja 400, as well as provides support for other Ninja 400's on the track. In our quest for track day domination on Kawasaki's 399cc supersport, we designed a simple and easy way of adding real performance and power to the engine for that extra edge in performance. Through an extensive research and testing process, we were able to determine the most effective velocity stack lengths for overall power increase using the natural resonant frequencies of the Ninja 400's intake to develop the greatest volumetric efficiency. All of that work has resulted in a 5.8% peak power horsepower gain when compared to the same bike using OEM velocity stacks. That's a significant performance boost that can help you land your race boots on the podium. Installation is an easy bolt-on process, which means that real-world power gains are easy to achieve and leave the ability to return to the stock setup if the need ever arises. Each Velocity Stack set is made from an injection-molded rubber compound capable of withstanding gasoline and other harsh chemicals found in the extreme environment of your Kawasaki Ninja 400's engine. Take advantage of hundreds of R&D hours and give your Ninja 400 some extra power with one easy installation by using our TST WORX Ninja 400 V2 Velocity Stacks.

Color may vary.