TST WORX Airbox for Kawasaki Ninja 400 2018-2023

Airbox Features

• Replaces the entire stock airbox with a race-developed design
• 2.5 lbs lighter than the stock setup
• Bolt-on component - no modification required*
• Provides 8% increase to peak power compared to stock airbox
• Provides 5-10% increase in the upper range (9500 - 12500 RPM) compared to stock airbox
• Carbon fiber and high-strength polymer construction
• Toray Carbon Fiber Prepreg features a high gloss clear coat for UV protection
• Includes WORX V2 Velocity Stacks for optimized top end performance
• Includes specific WORX developed pre-oiled foam air filter
• Comes pre-assembled and ready for installation
• Non-ABS and ABS-Compatible versions available

Velocity Stack Features

• Designed to optimize volumetric efficiency
• Developed specifically to enhance top end power
• Manufactured from chemical-resistant material to withstand gasoline and other harsh chemicals
• Developed through extensive research and testing by the TST Industries WORX Racing Program

Air Filter Features

• Developed to optimize airflow within WORX Airbox and provide reliable engine protection
• Specifically designed to fit within the WORX Airbox
• Pre-oiled and ready for use
• Open-cell foam filter medium
• Washable and able to be rejuvenated with your preferred oil
• Recommended to be inspected after each race weekend
• Replacements are readily available if needed

*Small tab located on the frame needs to be bent to provide proper clearance for installation.

Description

Our quest for class domination has led our engineering team down a lot of paths, the latest being a complete redesign of the airbox assembly in an effort to create the best possible air delivery into the engine for optimized performance, especially where it's needed the most - the top end. What they developed after months of testing and design has not only executed that goal but done so in one of the most elegant and sophisticated ways possible. The new WORX Airbox is capable of increasing power by 5-10% in the upper RPM range between 9500 RPM and 12500 RPM, ensuring you have the power to separate yourself from the pack and drop your lap time. When paired with our specific WORX tune, or your own custom tune, the new airbox provides immediately noticeable improvements that will help you land your feet on the podium. The Toray carbon fiber intake construction mounts to a high-strength polymer back airbox structure, enclosing the new WORX Air Filter and V2 Velocity Stacks. The entire kit comes pre-assembled with the filter pre-oiled and ready for use. It drops in to replace the stock setup, removing with it the stock air filter and velocity stacks and replacing them with specifically designed components that take advantage of the improved airflow and further optimize the volumetric efficiency for better engine performance and faster lap times. This Ninja 400 Airbox is unlike anything else on the market. It not only delivers power performance gains but does so while being a perfect representation of the high-quality design and manufacturing standards we hold ourselves to here at TST Industries. You won't find this type of airbox anywhere else!

Already purchase a WORX Ninja 400 Tune and want to upgrade? We'll provide a free tune reflash if you've already purchased a Stage I or Stage II tune from us before and can send in the same ECU. See the Tune Details tab for more information or CLICK HERE to get the free reflash.

The WORX Airbox comes pre-assembled, therefore we are not able to substitute items or customize the airbox or velocity stacks per order.