What It Is
The TC4 Seat Cover With Bump from Factory Effex is an aggressive cover that features raised pads in the middle to rear of the seat for added traction, and the "With Bump" kit includes a small chunk of foam that is glued to your stock foam before you install the cover, this creating a "step seat" effect.
The TC4 Seat Cover is perhaps the best-looking seat cover we've seen. With two-tone color schemes (black front and corresponding brand coloring out back), the TC4 Cover also features cool manufacturer patches sewn on each side. We love the look of the entire line. The quilted padding sections in the middle and rear of the cover do little to add extra traction for your butt, but they sure look cool! When combined with the "bump kit" foam chunk, the step seat transformation is complete and you can use the raised section of the seat to help keep yourself forward under hard acceleration.
The quilted padding sections look cool but don't really offer any added traction.
If you've been dying to try a step seat but aren't creative enough to make your own, the TC4 Gripper Seat Cover Kit With Bump is an excellent and affordable way to get a cool new seat cover, as well as the added benefits of having a hump on the back of your seat.