RatioTek is located in City of Industry, CA and is a division of Transcel, Inc. In the 1980's, owner Steve Younger introduced the full-time lube system to the automatic transmission industry for the Ford C6. This innovation was further progressed in the 1990’s in the overdrive E4OD line. RatioTek has now introduced a full line of affordable shift improving valve body kits for GM, Ford, Toyota, Subaru, & Allison transmission models. Even though these kits are priced well below some of the competitor equivalents, there is no lack of quality in the offerings.