It is one thing to get excited about parts when we get a press release from a company who is bringing something cool to the market but it is totally another to see the stuff in person. That was the case at PRI when we visited the Mark Williams Enterprises display. The company had some really neat stuff on display as they always do. Widely known around motorsports for their ability to innovate and push the engineering end of racing forward, the company has done it again with their 4-inch bore, 9-inch Ford style center section developed for drag racing.

This is the unit that uses a four inch bearing in the front and 100% roller bearings in the pinion support. The design not only manages to strengthen the whole unit by eliminating a two piece style pinion support but because it is rollerized all the way through it has minuscule amounts of drag, which frees up horsepower and gets your car or truck moving quicker and faster. The case has been clearanced to accommodate up to 10″ diameter ring gears, and it can support up to a 1480 yoke which is bad ass because that’s the preferred series for classes like pro modified. The 4″ bearing is the largest used in any Mark Williams case to date and we can’t help but think that they will be looking at this technology in all of their parts, where applicable. Bearing caps can be spec’d in either steel of aluminum, depending on customer preference.

You’ll also see the makings of a two piece driveshaft below and that’s a product that the company is currently in development on. Yep, you are looking at one piece of a Mark Williams developed Hellcat replacement driveshaft. The factory units apparently are not up to the task when drivers start modifying the cars and while some have gone to a one-piece design, the guys at Mark Williams say that because of the length  of the shaft, critical speed becomes a problem in situations where the car is going to be run at sustained high speeds.

A two piece shaft is a great way to combat the critical speed problem and if anyone can build one that’ll be bomb proof, it is Mark Williams Enterprises. We’ll keep you posted!

Check out the photos below for a look at the 4-inch bore, 9-inch drag race center section – this thing is awesome