Loganbuilt has developed and manufactured the first ever SFI certified 30.1 flexplate shield for diesel racing transmissions. SFI flexplate shields are a safety feature required by the NHRA for any vehicles running quicker than 6.40 ET in the eighth mile, or 10.00 ET in the quarter mile. Flexplate shield requirements have been in place for years but they have been ignored in 47/48RE transmissions. Virtually every Cummins-powered truck on the dragstrip is backed by one of these 47/48RE transmissions and there are quite a bit of competitors surpassing that 6.40/10.00 range. These are the most popularly used transmissions in the diesel racing industry because they are what came in Dodge trucks behind the Cummins engine from 1994-2007. Surprisingly, it also is not uncommon to find the 47/48RE transmission mated to a Power Stroke or Duramax engine in a drag racing application.