- 14" megaphone muffler
- Show-polished finish
- 2.25" outlet permanent baffle
- Larger diameter outlet provides increased exhaust flow
- Maximized power gains on stock and modified engines
- Distinctive look and aggressive sound
(optional noise reduction insert sold separately) - No fairing modifications required
- Aerospace quality, ultra lightweight stainless construction
- 57% weight savings vs. OEM exhaust system
- One 18mm O2 bung pre-installed on collector
(block-off plug and 12mm O2 bung adapter included) - 3oz. tube of Permatex Ultra Copper® supplied with purchase
- Includes PAIR block-off cap for decel-pop reduction
- Includes muffler, front section, flanges and necessary hardware
- 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 for exhaust installation instructions
- Click here for PAIR block-off instructions
The Follow-Up To Our Best-Selling Exhaust System
The Alien Head 2™ offers a full through 2.25” diameter secondary section for increased exhaust flow and builds upon the legendary, race-proven performance of the original Alien Head™, while adding a distinctive look and deeper exhaust tone. This system is a must for the sportbike owner who’s never quite satisfied with factory power.
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 sportbike. The Alien Head 2™ exhaust system stands as the benchmark of cutting edge power, design, and style.
ZX-10R (2021) Exhaust Weight Comparison
OEM Full Exhaust System:
- Muffler: 5.85 lb.
- Heatshields: 0.50 lb.
- Catalytic Converter: 10.60 lb.
- Head Pipes: 4.65 lb.
Total = 21.60 lb. (9.80 kg)
Alien Head 2™ Full System:
- Muffler: 2.95 lb.
- Front Section (w/ flanges & hardware): 6.40 lb.
Total = 9.35 lb. (4.24 kg)
Total Weight Savings = 12.25 lb. (5.56 kg) or 57% of OEM weight
