Seat Bases

Do the original seat rails not fit your new racing seat, or are you missing a solid point to bolt it to? A seat base is the vehicle-specific foundation that connects the seat to the car's floor. This category is for you if you are fitting an aftermarket seat and want a base designed for your exact car model and side.

What does a seat base do?

The seat base is the link between the car's floor and the seat. It is shaped to the specific car model, so it can typically be bolted into the car's existing mounting points, while rails or brackets are mounted on top. This provides a solid foundation for a racing seat, but how much adjustment is needed depends on the car and the product. In this category you will find bases from Sparco, e.g. Sparco 600 Base for Toyota Land Cruiser and Lexus GX460 as well as Sparco Base for BMW E36 Coupe 92-99 and Volvo 240 74-93.

How to choose the right base

The product name tells you what the base is designed for. Check these points before you order:

• Car model and model year: e.g. Acura RSX 02-06 or Jeep Grand Cherokee 05-10 – a base for a different model year will not necessarily fit.
• Side: the bases are available for the left or right side (Lft/LF and Rt/RT in the product name), and the two sides are typically not identical.
• Seat mounting: the base's hole pattern must match the rails or seat brackets your seat uses.
• Seating height and space: the combined height of base, rails and seat affects headroom and the distance to the steering wheel and pedals.

After installation you should check the bolts regularly, as a loose fastening can cause play in the entire seat setup. You will find other parts for the setup among our seats and seat parts.

Frequently asked questions

Can I use a left seat base on the right side?

Typically not. The bases are adapted to the shape of the floor and the mounting points on each side, which is why the product name states left or right. If both front seats are to be converted, you will normally need one base for each side.

Do I also need seat rails or brackets?

That depends on the seat. The base handles the attachment to the floor, while the seat is typically mounted via rails or side brackets. Check that the hole pattern on the base matches the parts you want to mount on top.

Can a modified seat setup pass inspection?

That depends on the product and the car. Check the requirements for the specific part number and for your car before you go for inspection, and make sure that the seat belt, seat fastening and any sensors work correctly after installation.