HammerHead® 12 Bolt

The HammerHead® IRS 12 Bolt Housing is the first product we brought to market in 2013. It is a cast aluminum differential housing that takes 12 bolt GM gears. It is cast in A206-T4 aluminum 32% stronger than the popular A356-T6 aluminum. The 12 bolt HammerHead is cast with multiple applications built into the housing including:

  • 5th Gen Camaro (Pontiac G8/Chevy SS/Caprice PPV/Holden Commodore)
  • C2 Corvette
  • C3 Corvette
  • C4 Corvette (using Dana 44 rear cover)
  • Gen 1 Viper (using Dana 44 rear cover)
  • Gen 2 Viper (using Dana 44 rear cover)
  • HammerHead NitroPlated Inside
  • HammerHead NitroPlate Top

HammerHead IRS Contact/Quote/Support Form

Please fill out this form to contact us with any questions, get started on a price quote, or for technical support. We will get back to you as soon as possible.
Name(Required)
Tell us the transmission you have in your vehicle
What gear ratio do you plan to run
Which of our HammerHead Differentials Are You Interested In?
Reason(s) For Contacting HammerHead(Required)