SPL Parts Porsche 996/997/986/987 Adjustable Caster/Trailing Arms

When you're looking to dial in your Porsche's suspension for serious performance, you need parts that let you make exact adjustments. This set from SPL Parts gives you adjustable caster and trailing arms, designed to replace your stock components and offer a wide range of tuning. You get precise front or rear caster adjustment, which is crucial for optimizing turn-in response and correcting any imbalances between the left and right sides of your car. If you've ever adjusted camber and found your caster changed, these adjustable arms are what you need to get your alignment back on track.

What you're getting here are precision-machined rods made from Billet Aluminum alloy 2024. They're gun drilled to keep unsprung weight down, which is a big deal for handling, while still being very strong and stiff. Inside, you'll find FK Spherical Bearings that replace the stock rubber bushings. This gets rid of that vague, mushy feeling and gives you a much more direct and responsive steering feel. SPL also includes stainless steel spacers for the trailing arm's forward pivot point. By raising or lowering this point, you can adjust anti-dive characteristics in the front or anti-squat in the rear, helping you fine-tune the car's balance.

One of the standout features is SPL's 360-degree rotating clamp design. This makes it super easy to lock in your alignment settings precisely without fighting with jam nuts and trying to keep everything oriented correctly. The hardware is even blue anodized titanium, shaving off more weight and adding a touch of durability. These arms are made in the USA and are intended for high-performance street and race applications, working with your OEM or OEM-style lower control arms.