• 14" megaphone muffler
• Black ceramic coated finish
• 2.25" outlet permanent baffle
• Distinctive look/Aggressive sound (2.25” optional noise reduction insert sold separately)
• No fairing modifications required
• Aerospace quality, ultra lightweight stainless construction
• Includes (Emissions/PAIR) Block Off Cap and instructions for decel-pop reduction
• 3oz. tube of Permatex Ultra Copper® supplied with
  exhaust system purchase
• 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 for PAIR block-off instructions

Our Best-Selling Exhaust System

The Alien Head™ Exhaust System combines our legendary race-proven performance with the distinctive look and sound of our Alien Head™ muffler and 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™ Full Exhaust System to find the ideal balance of performance and attitude.

Performance upgrade packages specifically designed for stock through heavily modified bikes. The Alien Head™ Exhaust System stands as the benchmark of cutting edge power, design, and style.

Dyno Charts:

ZX-10R (11-13) Alien Head 2 vs. Stock Mid Gain SAE

ZX-10R (11-13) Alien Head 2 vs. Stock SAE

ZX-10R (11-13) Alien Head 2 vs. Slip-On vs. Stock Mid Gain SAE