GT3 Lower Control Arm Alignment Shims – 996 / 997 / 991 Cup Front | Demon Speed

GT3 Lower Control Arm Alignment Shims – 996 / 997 / 991 Cup Front

Demon Speed lower control arm alignment shims for Porsche GT3-style two-piece control arms.

Designed for suspension geometry and camber adjustment on Porsche applications using the two-piece GT3-style lower control arm, including 996 and 997 GT3 Cup, 991 GT3 Cup front, and compatible street-car applications using the same style control arm.

Precision laser cut from billet aluminum and hardcoat anodized for durability.

Available in 1 mm, 3 mm, 6 mm and 10 mm thicknesses.

Sold individually.

Precise Suspension Adjustment

Porsche GT3-style two-piece lower control arms use removable shims between the control-arm sections to alter the effective length of the arm.

Changing the shim stack allows precise suspension geometry and camber adjustments during alignment and chassis setup.

Demon Speed offers multiple shim thicknesses so teams and shops can quickly build the required stack for the desired setup.

Demon Speed Manufactured

These shims are manufactured for Demon Speed Motorsports as a durable and cost-effective alternative to factory alignment shims.

Each shim is:

• Precision laser cut from billet aluminum
• Hardcoat anodized for durability
• Designed for Porsche GT3-style two-piece control arms
• Available in multiple thicknesses
• Ideal for race setup and alignment changes

Available Demon Speed Thicknesses

1 mm
3 mm
6 mm
10 mm

Shims are sold individually.

Porsche Motorsport References – 991 GT3 Cup Front

For reference, Porsche Motorsport lists the following front camber adjustment shims for the 991 GT3 Cup:

The Porsche Motorsport numbers are provided for application and cross-reference purposes. The shims sold on this page are Demon Speed-manufactured components and are not Porsche Motorsport branded.

Broad GT3-Style Control Arm Fitment

These shims fit Porsche applications using the compatible two-piece GT3-style lower control arm, including:

• 996 GT3 Cup
• 997 GT3 Cup
• 991 GT3 Cup – Front
• 996 GT3
• 997 GT3
• Applicable 996 / 997 models converted to GT3-style two-piece control arms
• Applicable Boxster / Cayman models using compatible two-piece GT3-style control arms

For non-Cup applications, verify that the car is equipped with the compatible two-piece GT3-style control arm before ordering. The current DSM page similarly conditions the broader street-car fitment on use of the two-piece control arm.

Important 991 GT3 Cup Fitment

For the 991 GT3 Cup, these shims are used on the FRONT control arms.

The 991 GT3 Cup rear uses a different shim design. Use the dedicated 991 / 992 GT3 Cup Rear Lower Control Arm Shims for the rear suspension.

Features

• Demon Speed Motorsports manufactured
• For Porsche GT3-style two-piece lower control arms
• Fits 996 GT3 Cup
• Fits 997 GT3 Cup
• Fits 991 GT3 Cup front
• Compatible with applicable street-car GT3-style control-arm conversions
• Precision laser-cut billet aluminum
• Hardcoat anodized
• Available in 1, 3, 6 and 10 mm thicknesses
• Allows precise suspension geometry and camber adjustment
• Ideal for trackside alignment and chassis setup
• Sold individually

Available Sizes

1 mm | 3 mm | 6 mm | 10 mm

Sold individually. Select the required thickness when ordering.