SPL Parts Porsche 991/981/718 GT3/GT4 Front Caster Arms w/anti dive

Rubber should be saved for the tires. The factory front caster arms on Porsche 991 GT3 plus 981 and 718 Cayman GT4 platforms use soft rubber bushings that flex under load, which lets alignment and toe change right when you are asking the car to work the hardest. SPL Parts replaces those links with fully adjustable, spherical bearing components that keep the suspension honest and repeatable on both street and track.

Motorsport grade construction

Gun drilled 2024 aluminum links, SPL’s 6061-T6 rotating clamps and Teflon lined FK spherical bearings keep weight down while delivering precise, low friction movement. Stainless or titanium hardware is used throughout for strength and corrosion resistance, and every kit is designed, machined and assembled in the USA.

Anti dive and front grip for GT cars

These caster arms with anti dive geometry for Porsche GT platforms let you fine tune caster while improving braking support and steering feel at turn in, a big advantage on cars that see heavy track use.

We use SPL hardware across many of our own builds because it is easy to work with, holds settings and stands up to real track mileage. If you are dialing in Porsche 991 GT3 plus 981 and 718 Cayman GT4 platforms for serious driving, these pieces are a key part of getting the alignment and feedback you want.