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Sub strap mount Light Weight Bucket Seat. Porsche 991 / 992 / 981 / 718 GT3 / GT3 RS / GT2 / GT4 ❭ PORSSM1
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.1 (911) Sport Classic 3.8L 2023
- Porsche 992.1 (911) Dakar 3.0L 2023-24
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Sold each - Fits left or right hand seat

Fits:
Porsche 981 Cayman GT4
Porsche 718 Cayman GT4 / GT4 RS
Porsche 991.1 / 991.2 GT3 / GT3 RS
Porsche 992 GT3 / GT3 RS / GT2 RS
The Best Way to Install Sub Straps in your Porsche
The Performance Sub Strap Mount is a must-have for Porsche GT2RS, GT3/GT3RS, and GT4 owners using five, six, or seven-point harnesses with the factory CFRP Full Bucket Seats (also called Light Weight Bucket seats). Designed to easily bolt in using existing seat hardware without having to fully remove the seats from the car, the Performance Sub Strap Mount properly anchors your harness anti-submarine straps ("sub straps") to your seat base.
The CMS Performance Sub Strap Mount fits the driver- and/or passenger-side seats.
Performance install harness sub straps in your Porsche are Made in the USA.
Performance Sub Strap Mounts are designed, manufactured, and powder-coated entirely in-house in the USA. Made of solid carbon steel while only weighing 1.4 lbs (625g), there's not a stronger, more affordable solution available. Sub Strap Mounts allow full seat adjustment, fore/aft and up/down, while maintaining the ideal sub strap angle to your body for maximum safety.
Performance Sub Strap Mount Details:
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed