Suspension Secrets Circuit Handling Pack For Porsche 991.1 GT3

The 991-generation Porsche 911 GT cars feature a good deal of chassis adjustment to help improve handling for road and track. Whilst this adjustment is useful, there is not enough adjustment for an effective track day setup.

To improve cornering performance on track, we have developed our Suspension Secrets Circuit Handling Pack for the Porsche (991) GT3 RS GT2 RS. Our kit is designed to greatly improve on-track performance, with a focus on improving braking stability and increasing mid-corner grip and chassis feedback.

The key improvements of the Suspension Secrets Circuit Handling Pack for Porsche (991) GT3 RS GT2 RS are:

• Increased mid-corner grip and steering feel
• Greatly reduced understeer
• Removal of bump-steer, leading to more accurate steering
• Increased braking stability with a reduction in excessive nose diving during heavy braking
• More neutral chassis balance

The technical highlights of our Porsche Circuit Handling Pack include:

• Increased positive caster by 3.5 degrees
• Increased bump-to-droop ratio by 15mm with a lower front ride height, which increases damper efficiency
• Increased negative front axle camber with a minimum of 2.5 degrees and a maximum of 4.5 degrees
• Complete removal of bump-steer
• Rear camber shims increased rear axle negative camber by an additional 1 degree
• Cold-formed, high performance specially developed Eibach racing springs

The Porsche Circuit Handling Pack contains four upgraded components that are designed to work as direct replacements for original Porsche parts. The upgraded components include:

• 2 x Suspension Secrets top mounts featuring increased camber and caster.
• 2 x Custom Eibach front springs with an increased (stiffer) spring rate.
• 2 x Suspension Secrets spring cups which reset the bump-to-droop ratio of the damper and prevent the damper from bottoming out, increasing grip.
• 2 x Suspension Secrets bump-steer tie rod ends which eliminate bump-steer and improve turn-in response.

Please note - the Track Focused option includes shorter front springs.