Fits years 2000, 2001, 2002, 2003, 2004

The TX10A to D300 Doubler by North West Fab allows you to keep the low gears of your stock TX-10A transfercase and add a Dana 300, Atlas or Stak Transfercase behind it. This will, at very minimum, double your crawl ratio.

Available with a 23 or 31 spline output.