Gen 2 to Gen 3 Hayabusa Full Exhaust Adapter Kit (sold separately) and muffler mounting bracket modification is required for Gen 3 Hayabusa (22-25) fitment.

Includes a Spacer Kit (a $24.99 value) that allows a Gen 2 Hayabusa Alien Head 2 exhaust to be used on a Gen 1 Hayabusa (99-07) without any permanent modification. Spacer kit not required for Gen 2 models.

• 14" megaphone muffler
• Black ceramic coated finish
• High flow flange kit
• Maximized power gains on stock and modified engines
• 2.25" outlet permanent baffle
• Larger diameter outlet provides increased exhaust flow
• Distinctive look/aggressive sound
  (2.25” optional noise reduction insert sold separately)
• No fairing modifications required
• Aerospace quality, ultra lightweight stainless construction
• Pre-installed 18mm bung for wideband O2 sensor
• 3oz. tube of Permatex Ultra Copper® supplied with purchase
• Includes (Emissions/PAIR) Block Off Cap and instructions for decel-pop reduction
• C44 eliminator plug available here to prevent FI light following O2 sensor removal
• Includes Brock’s lifetime direct support package at no additional charge
• Select from increased drivability/fuel mileage (pump gas) or race-proven (race fuel) track maps via our map support program at no additional charge

• The Follow-Up To Our Best-Selling Exhaust System

  The Alien Head 2™ offers a full through 2.25” diameter secondary section and bigger flange kit to take full advantage of state-of-the-art high performance aftermarket cylinder head porting techniques. These free-flow exhaust enhancements allow the performance curve to be moved up, via aftermarket ECU modifications when using a stock displacement engine, while also allowing larger displacement engines to breath freely – a must for the loyal Hayabusa owner who’s serious about competing against today’s alternate brands of modern sportbikes.

  The Alien Head 2™ exhaust system combines our legendary, race-proven performance with the distinctive look and deeper tone than the original Alien Head™ muffler, which has become a favorite with custom builders to showcase more of today’s big tire/custom swingarms. Manufactured to stringent specifications, Brock personally designed and hand-tuned the Alien Head 2™ full exhaust system to find the ideal balance of performance and attitude for the stock to highly modified Hayabusa.

  The Alien Head 2™ exhaust system stands as the benchmark of cutting edge power, design, and style.

Product Info: 

• Our stock photos shown are of the actual item.
• Brand new directly from BROCKS in original packaging.
• IN STOCK AND READY TO SHIP
• SAME DAY SHIPPING MONDAY - FRIDAY IF ORDERED BEFORE 10AM!!!

Fits the following Vehicles:

Handling Time:

• Handling time on all items is 1 business day. Business days are Monday - Friday excluding holidays.
• Orders are processed daily at 10am EST Monday - Friday, this means if you place your order after 10am EST your order will not be processed until the following business day.

Domestic Shipping:

• Free shipping on most items unless otherwise stated to the lower 48 states. Additional charges for Alaska, Hawaii, Puerto Rico and Guam may apply. We reserve the right to change shipping carrier based on location or for combined orders. This is to ensure your package gets to you as quickly and as well packaged as possible. Our inventory is constantly updating and changing, we do our best to keep it as accurate as possible. However, in some instances seasonal items sell very fast and can be subject to temporary delays. In the case this happens, we place your parts on an emergency restocking order and the item will generally ship within 1 business day. In the event of a prolonged delay we will make our best effort to contact and notify you of such delays. ETA's provided by MX Locker are ESTIMATED TIMES, we aim to get you your order within these time frames however some unforeseen circumstances do arise. We will do our best to work with you to get you your item as fast as possible.

International Shipping:

• We ship worldwide. Limitations due to manufacturer's restrictions on some items may apply. The shipping costs do not include duty or import taxes so please check before you purchase an item. All international items will ship via USPS Priority Mail International or USPS Express Mail International for addition fee. Shipping times will vary depending on the country the item is being shipped to.

Combined Shipping:

• We do our best to combine shipping on orders. If you wish to ensure that multiple items you have purchased are combined please send us a message.

• We offer 60 day free returns!
• Returns must be in NEW/UNUSED condition in ORIGINAL PACKAGING.
• If the part is used there is a possibility that you will not receive a full refund, as we do have to resell the item.
• Electrical parts are NOT returnable.
• All Returns must be authorized by us and you will get a RMA number to put on the outside of the box.
• If an exchange needs to be made we will gladly work with you, however you must pay for shipping to return item AND shipping to get the new item to you.
• In the event that we make a mistake, they do happen occasionally (we are sorry), we will cover shipping costs to get you the correct item.