Racetech RT4100 Racing Seat

If you are moving beyond spirited street driving into serious HPDE or club racing, a proper fixed back seat is one of the most important upgrades you can make. The Racetech RT4100 takes everything we like about their pro level shells and wraps it into a composite seat that works perfectly in track day and time attack builds.

Why we like the RT4100

• FIA 8855-1999 approved composite shell for real motorsport safety
• Deep sides and pronounced shoulder support to keep you planted under braking and lateral load
• High quality fire retardant upholstery with breathable fabric in contact areas for comfort during long sessions
• Generous harness slots that work well with modern 6 and 7 point belts
• Multiple shell sizes available so you can pick the fit that actually matches your body type
• Side mount design compatible with Racetech alloy or steel brackets and most common floor mount kits

Fitment and sizing

This listing covers the RT4100 series seat in the size option selected. If you are between sizes or building a dual driver car, reach out and we can help you choose the shell that will hold you securely without being uncomfortable.

Installation notes

The RT4100 uses standard side mounts and is designed to work with Racetech brackets and sliders or custom welded seat rails. Proper mounting is critical for both comfort and safety, so we always recommend professional installation and correct harness routing.