The Gen 3 Suzuki Hayabusa uses extremely long and thin factory velocity stacks to slow down the airflow for immediate torque and daily riding response. Unfortunately, this kills the racing range of horsepower. With higher RPM the engines nods off soon and loses nearly 30HP as you rev it out to peak RPM.

The BT Moto modified velocity stacks gives you almost built cylinder head power gains in an easy, bolt-on, plug-and-play package using factory hardware and air filter (optional).

WHY FOCUS ON TOP END POWER?

We decided on this design because it mimics what every part / aftermarket exhaust does to this platform, which is move the powerband to the right. The engine has tons of torque and displacement but absolutely just no legs as it’s revved out compared to its 1000cc brothers. The velocity stacks equalizes this and gives the Busa a needed advantage it need to be competitive again.

We studied the other velocity stacks on the market, and some were too tall, too short, or simply didn't fit the factory airbox.. some even came apart with mileage (yikes). Since the Hayabusa isn’t a big tune only power gainer, we knew we had to bring a hard part to complement our ECU flash.

We spent a lot of time building a design that captures more air at high rpm and high speed to fill the throttle bodies versus tuning it for low RPM cruising response. Our box filler design maintains a flow where no air gets trapped in corners of the airbox at speed to maximize the powerband under ram air pressure. The low rpm losses can be minimized with careful throttle and fuel tuning.

We highly recommend these with our flash as it’s the best bang for your buck modification for the platform.

BENEFITS

• With our flashing, there's no need to worry about fueling or rideability.
• Correct fueling on both banks in “Alpha N” mode and race modes (comes with flash).
• Engine tables corrected for BT Moto velocity stacks (comes with flash).
• Custom velocity stack designed for YOUR airbox. No one size fits all approach.
• OEM fitment and ability to go back to stock when ever you'd like.
• Plug and play
• Gain 20+HP (depending on bike and mods) at EXTENDE higher RPM's (with BT Moto Flash).
• No power loss in low or midrange (with BT Moto Flash).
• We've tested all the others on the market and this one has the best power hands down!

BT MOTO VELOCITY STACKS

Custom composite with our logo etched into them, the BT Moto Velocity Stacks have been carefully engineered and designed to maximize power in the higher RPM range while not losing power in the low RPM range (with ECU flash).

Made for an OEM fit, the BT Moto velocity stacks bolt to the airbox to ensure tight fitment while also being easy to install. These are plug-and-play and require no additional modifications to your airbox to fit. Simply remove your factory velocity stacks and install. Coupled with our custom flash, the combination makes an extremely easy install and tune that can be done in your own garage, with basic tools and minimal mechanical knowledge.

BT MOTO BEFORE AND AFTER REVIEW

SHIPPING POLICY

For US customers, we offer 3 shipping options:

• Free shipping for orders over $69. This shipping option takes 5-8 business days.
• Economy for small orders (less than 1lbs) $6.99
• This shipping option takes 5-8 business days. 
• Standard shipping (FedEx / UPS) for all orders $9.99 
• This shipping option takes 1-5 business days. 

*Most Arrow exhausts  ship directly from Italian warehouse!

It typically arrives at our store within 1-2 weeks, and then we'll ship it out to you right away!

*Most of M4 and Empire exhausts Due to high volume of sales, lead time could be up to 5-20 business days before shipping.

We are currently unable to offer   overnight or 2-day guaranteed shipping .

This is because the warehouses of most of our suppliers only ship Ground.

Products ship from our Miami facility or drop ship direct from our Suppliers

Orders placed before 11am CST are typically will send the same day. 

Most orders placed after that time are will send the following business days. 

If you have specific shipping requests or needs please contact us at sales@bills-exhausts.com prior to purchasing and we will do our best to assist you.

If an item is back ordered from the manufacturer you will be notified by us. FYI – We don’t like it when this happens any more than you do.

We will try and help as best we can with back orders

A TRACKING NUMBER will be send to you via email or text after purchasing .

SHIPMENTS WITHIN THE U.S.

FREE STANDARD SHIPPING  on orders over $69 is available in all US lower 48 states, APO addresses, and Puerto Rico via USPS or UPS.  (*Exceptions apply for Alaska and Hawaii.)

Free standard shipping means we will select an option that gets you your parts as soon as possible while still being economically priced.

We reserve the right to deny free shipping for any reason.

About pre-orders:

When you order  PRE-ORDER it  means that you can purchase it before the official release date and then, you just wait for the shipping Usually pre-orders takes from 1-6 weeks depending the brand and the product. 

Contact us when ordering or we will contact you to go over rates and times.

INTERNATIONAL SHIPMENTS

WE SHIP WORLDWIDE Shipping rates outside the US are based upon destination and weight. 

Canada ,European Union and Puerto Rico Fast shipping with DHL Prepaid Customs/Taxes (DDP)

• * Countries we don't collect  tax or duties required pay by you.

Please note that we are unable to ship oversized items such as tires, batteries, and oils internationally.

For these items, we offer Large Truck Load (LTL) freight shipping.

Please be aware that LTL shipping costs may vary and exceed the estimated amount at checkout.

We will contact you for confirmation before processing your order.

If you have questions about these fees or duties contact us prior to ordering and we can assist you.

 -For international orders, customers who refuse the package will not receive a refund for the original shipping cost. Additionally, any return shipping fees incurred by us will be deducted from the customer's refund

 -Tires are not eligible for return.

 -Electronics are not eligible for return.

More for Return policy here

Delivery times for international shipments are typically 5 to 9 business days, but this can vary depending on your country’s customs procedures.

Orders delayed by customs are not something we can control or change.

ALL international orders (Includes CANADA ,California and Puerto Rico) needed to be ship from our location in Miami Florida.

Most of International orders cannot drop ship from supplier's warehouses(Except on some specific Brands)

Parts typically take 2-7 business days to arrive at our warehouse.

Once they're in, we'll send you a tracking number.

The estimated delivery time shown at checkout begins once the part is shipped from our warehouse