About the owner, Ron Clothier. You could say that
Clothier Transmission and Traction Products initiated in the late 1970s, when mechanical
engineering student Ron Clothier first combined his passion for 4WDs with his natural
born innovation in a truly profound way. For his senior project at the undergraduate
level, Ron developed a compound transmission system. Using a custom adapter designed
and built by Clothier, he joined a GM Turbo 400 automatic transmission and a NP
435 four-speed manual. Power then flowed to a Dodge WM300 two-speed transfer case.
This combination provided an astounding 26 forward speeds and a 13.33 to 1 low range,
long before three- or four-speed transfer cases were available from the aftermarket!
After completing the Graduate Mechanical Engineering program at Northeastern University in Boston, Ron was immediately hired by IBM as a Manufacturing Engineer where he developed state-of-the-art equipment and processes that are still employed by the technology giant today. Meanwhile, Ron continued to hone his off-road skills in the unforgiving mountains of Northeastern Pennsylvania. He particularly enjoyed off-roading in the winter months, when his custom 4WD vehicles were among the only street-legal machines capable of accessing the snow and ice covered trails.
![]() Ron's completely custom 1966 International Harvester truck powered by a 500HP motor, which transfers power through a massive Eaton/Fuller commercial truck transmission and 5-ton axles to a set of 49" Interco IROK tires. |

You could say that
Clothier Transmission and Traction Products initiated in the late 1970s, when mechanical
engineering student Ron Clothier first combined his passion for 4WDs with his natural
born innovation in a truly profound way. For his senior project at the undergraduate
level, Ron developed a compound transmission system. Using a custom adapter designed
and built by Clothier, he joined a GM Turbo 400 automatic transmission and a NP
435 four-speed manual. Power then flowed to a Dodge WM300 two-speed transfer case.
This combination provided an astounding 26 forward speeds and a 13.33 to 1 low range,
long before three- or four-speed transfer cases were available from the aftermarket!
