Alien Head 2 Full System Black 14" Muffler Suzuki Hayabusa (99-22)


Alien Head 2 Full System Black 14" Muffler Suzuki Hayabusa (99-22)

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Gen 2 to Gen 3 Hayabusa Full Exhaust Adapter Kit (sold separately) and muffler mounting bracket modification is required for Gen 3 Hayabusa (2022) 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
  • Click here to view logo plate color options
  • Click here to view installation instructions
  • Click here to view PAIR block-off instructions

Note: If used on a Gen 3 Hayabusa the muffler mounting bracket must be modified to provide clearance for the rear brake lever (follow link for instructions).

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.

Dyno Chart: Click image to enlarge

SAE Scale

Alien Head 2™ Full System Weight:

  • Muffler: 3.05 lb.
  • Head Pipes (w/ flanges): 5.20 lb.
  • Collector: 1.50 lb.
  • Hardware: 0.40 lb.

Total = 10.15 lb.

Product Videos


  • 5
    Go fast parts

    Posted by Michael Green on Apr 21st 2021

    I loved how easy it was to follow the instructions and all the literature on their website to install the full exhaust system. The quality of the system was also great . This company is definitely one i will always come back to for all my bike parts .

  • 5

    Posted by Adrian Cooper on Sep 1st 2020

    Hands down the best bang for your buck, in this instance one is much better than two... Truly truly Stupid fast

  • 5
    Alien head exhaust

    Posted by Kenney on Nov 17th 2018

    Excellent quality!!! Love the sound and performance gain! Brocks map support really makes this the best hands down exhaust to buy for your money!!!

  • 5
    Alien Head 2 Exhaust

    Posted by Corey on Jan 30th 2018

    I have owned my second busa now for almost two years now and have done a ton of research and was saving up and wanted this exhaust. I was thrilled. Its every thing I wanted. Power, sound and along with the pair valve mod for decel pop, it is perfect! The power it brings to the Busa is just outrageous!!! I'm dying to see what it is putting out for rear wheel horse power.throttle response to power is smooth and I cant stop revving up my bike to hear the sound. Very happy customer! ! A++++++

  • 5
    Best Exhaust - Hands Down!

    Posted by Ben on Jan 30th 2018

    I've owned my Hayabusa for going on 5 years, but it wasn't until I installed my Brock's exhaust that I really started to enjoy it! It's got a great low rumble to it and really boosted the performance! Thanks for a great product.

  • 5
    Great Exhaust

    Posted by Cory on Jan 30th 2018

    This is a deep, loud, fast pipe. Light weight, and super cool looking. Only complaint is that it causes a ton of decel pop. Even after plugging the PAIR valve. Not a big deal. Good quality product as usual from Brock's.

  • 5
    Stupid Fast!

    Posted by Mike on Jan 30th 2018

    I have to say I love the sound and power of this system. I was even more impressed with the fit and over finish of the system. This system having the new larger header pipes and muffler really fit like a glove. I wouldn't run anything else on my bikes but a Brock's System...