IRS Super Diff (Threaded)

These high performance differential assemblies from Bugpack or Scat doubles the strength of your spider gear section with addition of 2 spider gears (AC301003) without changing differential action.

They are a perfect fit and completely race proven.

These units provide the neededstrength to withstand the abuse of high horsepower engines.

They eliminate the stock housing flex problem in addition to providing for an extra pair of spider gears.  Units allow infinite gear lash adjustment and do not affect steering or turning brake operation.