Product Code: RT4100-110 The RT4100 is a standard-sized fiberglass race seat. We have focused on achieving a lightweight seat shell with optimized geometry, straddling that line between designing the seat to be wide enough in the shoulders to suit the athletic build, but narrow enough to fit in most cockpits. Our patented back-mounted technology has trickled down from the 119 and 129 Series, giving you the option of fixing the seat to the rollcage at shoulder level. Large harness guides and a removable molded base cushion allow a range of drivers of varying heights to fit. Breathable Spacer fabric, parallel sides and pronounced thigh support round off the features of this accomplished motorsport seat. For the larger driver, the RT4100WT is approximately 2.25" taller and 1.5" wider and for those wanting a seat with head restraints, our RT4100HR and RT4100WTHR complete the 4100 Series. The 4100 Series seats use Racetech RTB1009M aluminum or RTB2009S steel side mounting brackets. Ideal for an entry-level club racer, track day car, or street/strip drag car. Contact us directly to help with your application and setup. Dimensions and Weights: Imperial (inch/pound) Model Size Material FIA A B C D E F G H I J K L M Shell Weight Total Weight RT4100 Standard Fibreglass 8855-1999 23.6 22.0 15.0 18.5 19.7 34.3 24.8 - - - 22.0 26.4 15.7 12.6 16.8 RT4100T Tall Fibreglass 8855-1999 25.2 24.4 15.0 20.1 19.7 36.6 27.2 - - - 24.4 27.2 17.3 13.2 17.9 RT4100WT Wide & Tall Fibreglass 8855-1999 25.2 24.4 16.5 20.1 19.7 36.6 27.2 - - - 24.4 27.2 17.3 13.2 17.4 Metric (cm/kg) Model Size Material FIA A B C D E F G H I J K L M Shell Weight Total Weight RT4100 Standard Fibreglass 8855-1999 60 56 38 47 50 87 63 - - - 56 67 40 5.7 7.6 RT4100T Tall Fibreglass 8855-1999 64 62 38 51 50 93 69 - - - 62 69 44 6.0 8.1 RT4100WT Wide & Tall Fibreglass 8855-1999 64 62 42 51 50 93 69 - - - 62 69 44 6.0 7.9 Application Common Applications From clubsport to national-level circuit and rally Stock Color / Material Gel-coat Gloss black Seat Cover Black fire-retardant nylon fabric with Spacer mesh through the torso Wear Patches N/A Technical FIA Homologation 8855-1999 Approved Shell Construction Fiberglass Composite Shell Weight From 5.7kg (12.6lbs) Side Mount Hole Centres 295mm Back Mount Hole Centres 250mm Bolt Torque (Zinc) 30Nm / 22 ft lb Sizes StandardT - TallWT - Wide & Tall Design Head Restraint N/A HANS Compatible Yes Harness Compatibility Up to 6-point harness Large Harness Guides Yes Air Ducting N/A Back-mount Compatible Yes Back-mount Required for FIA Homologation No