The Sportline RRB combines the brilliance that is the new Sportline series of seats with the lateral support of a Corbeau race seat. If you look at the way the thigh bolsters come into contact with the back of the seat, you will notice how it still gives that “bucket” look and feel that you see in a fixed back seat, while not eliminating the convenience of a reclining seat. The new Sportline series from Corbeau factors in feedback from customers all over the world to come up with a look and feel that is second to none. Unbelievable comfort, style, and support are put into every inch of this seat. It features top of the line injection molded foam, strategically placed bolsters to support you in just the right places, and harness belt capability. The Sportline RRB seat is available in our black Jacquard Cloth with a black Carbon Fiber Vinyl contrast. The Jacquard Cloth is known in the aftermarket seating industry as being among the most durable of any cloth material. The RRB has a seat base height of only 2.5 inches. That means is if you sit the seat on the floor the distance between the floor and where you would sit is 2.5 inches. Comparatively speaking this is a thin seat base, which is ideal for minimal headroom applications or for drivers wearing helmets. Please note that because of the design of the RRB, an inflatable lumbar support and a 5th slot (Anti-Submarine Slot) cannot be added to this seat. The RRB does however have great lumbar support so don't let that be a deal breaker. As a rule of thumb, the Sportline RRB will fit up to a 38" waist. The part number for the Sportline RRB seat is as follows: 84901: Black Cloth w/Carbon Fiber Vinyl.