The Follow-Up To Our Best-Selling Exhaust System
The Alien Head 2™ offers: more ground clearance, more room for the added fan, bigger flange kit and a deeper sound than the original Alien Head™ for the Gen 1 ZX-14's. We also moved the power curve up, since the ZX-14R has a stroker engine and doesn't need additional low end power.
The Alien Head 2™ exhaust system combines our legendary
race-proven performance with the distinctive look and sound of 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 all new ZX-14R.
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

2012 ZX-14R Exhaust Weight Comparison
OEM Exhaust System:
- Front Section: 8.8 lbs.
- Right Muffler: 16.25 lbs.
- Left Muffler: 16.00 lbs
Total = 41.05 lbs.
Brock's Performance Alien Head 2™ Full System:
- Front Section: 5.45 lbs.
- Flanges: 1.05 lbs.
- Muffler: 3.1 lbs.
Total = 9.60 lbs.
Total Weight Savings = 31.45 lbs. or 76% of stock weight