Gen 2 to Gen 3 Hayabusa Full Exhaust Adapter Kit (sold separately) and muffler mounting bracket modification is required for Gen 3 Hayabusa (22-24) 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
- Show-polished 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
Recommended: Upgraded exhaust header bolts available here (a solution to the known issue of bent OEM hardware).
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 Busa owner who’s serious about competing against today’s alternate brands of modern sportbike.
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 Busa.
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.
