Induction Removal Kit

What Is a Motorcycle Induction Removal Kit?

The Air Induction System (AIS) is a factory-installed emissions component found on many modern motorcycles, particularly V-twin cruisers and sport bikes. Its job is to introduce fresh air into the exhaust port, helping unburned fuel combust before exiting through the exhaust. While effective for meeting emissions standards, the AIS takes clean air from the air box, distributes it past reed valves, and pulls it into the exhaust port where it mixes with unburned fuel — a process that can create some unwanted side effects once you start modifying your bike.

Why Riders Remove the AIS

For street riders who have added aftermarket exhaust systems, the AIS can become more of a nuisance than a benefit. If you experience a lot of deceleration popping with a slip-on or full exhaust system, removing the AIS can help reduce it. Beyond the auditory annoyance, the AIS adds a tangle of hoses, tubes, and valves to an otherwise clean engine bay that many riders simply prefer to eliminate.

There are a few key scenarios where an induction removal kit makes sense:

• Aftermarket exhaust upgrades: Slip-ons and full exhaust systems change the back-pressure dynamics in the exhaust, often making the AIS more prone to causing popping on deceleration.
• Dyno tuning: When getting a bike dyno-tuned, removing the AIS provides a better air/fuel ratio reading; excessive decel popping even after syncing the throttle bodies is another common motivator.
• Engine bay aesthetics: An induction removal kit allows the removal of unsightly lines and hoses, cleaning up the look of your engine.
• Weight reduction: These kits allow the removal of the Air Induction System for lighter weight and added performance.

How Do Induction Removal Kits Work?

A typical induction removal kit — sometimes called an AIS block-off kit — replaces the stock air injection hardware with machined block-off plates and plug fittings. The proper approach is to completely remove the AIS equipment (valves, hoses, and elbows) and use block-off plates on top of the valve cover to seal the ports cleanly. Quality kits are designed to blend seamlessly with the engine's appearance while permanently closing off the vacated ports.

One important practical advantage of well-engineered kits is that they do not require re-tuning of carburetors or fuel injection systems, making them a straightforward bolt-on modification for most riders. Always verify your local laws before proceeding, as removal of this system may not be road legal in all jurisdictions.

Top Brand: Baron Custom Accessories

Baron Custom Accessories is one of the most recognized names in V-twin motorcycle accessories, and their induction removal kits are a go-to choice for Yamaha and Kawasaki cruiser owners. Baron offers air-injection removal kits for applications including Yamaha V-Star, Yamaha Road Star, and Kawasaki Vulcan motorcycles, with model-specific fitment for a clean, hassle-free installation. Their kits are known for being owner-installable and engineered to integrate naturally with the existing engine architecture.