981 GT4 SPM Stage 3 & Stage 3+ Suspension Package

Regular price $4,815.00

Shipping calculated at checkout.

SP Motorsports Stage Suspension Package

Fully developed for the 981 GT4 chassis. Our staged suspension packages deliver added adjustability while removing unwanted suspension deflection from rubber bushings resulting in more grip.

Stage 3 Includes:

  • Adjustable Drop Links Front & Rear

  • Adjustable Front Thrust Arms(RSR Tension Rods)

  • Solid Thrust Arm Bushings

  • Adjustable Rear Toe Links

  • Toe Locking Plates

  • SPM GT4 Front Spring Kit

  • Bump Adjustable Outer Tie Rod

  • Adjustable Rear Tension Rods

  • Front Inner Control Arm Monoball

  • Rear Inner Control Arm Monoball

Stage 3+ Includes

  • Adjustable Drop Links Front & Rear

  • Adjustable Front Thrust Arms(RSR Tension Rods)

  • Solid Thrust Arm Bushings

  • Adjustable Rear Toe Link

  • Toe Locking Plate

  • SPM GT4 Full Spring Kit

  • Bump Adjustable Extended Outer Tie Rod

  • Adjustable Rear Tension Rods

  • Front Inner Control Arm Monoball

  • Rear Inner Control Arm Monoball

  • Front Outer Control Arm


For Stage 3, in our journey of finding more grip, we start to take a serious look at all the control arms. The goal is to continue to increase grip, steering feel & reduce unwanted suspension deflection.

The front end utilizes Macpherson style suspension with the struts taking a bulk of lateral load. By now the majority of front end components are upgraded, the final piece of the puzzle is the lower control arm. The Stage 3 simply replaces the inner lower control arms housing the rubber bushings with motorsport engineered billet replacements with precision spherical aurora bearings. These super high quality bearings reduce drag, allowing the lower control arm full range of motion without the compromising “bushing twist”. Additionally, these bearings continue to help us reduce suspension deflection, thus reducing geometry change underload.

In the rear of the GT4, the car also utilizes Macpherson suspension. Stage 3 finally completes the rear suspension arms with billet inner control arm replacements.  With a Macpherson rear suspension it is critical to reduce deflection. Eliminating the stock control arm bushings and utilizing spherical aurora bearings correct the unwanted deflection thus help maintain the alignment under corner load. Just like the front, the rear control arm now has full range of near frictionless motion, and no longer is it relying on rubber “bushing twist”.

The Stage 3+ finishes off the 2 piece lower control arms with billet machined and matched outer control arms front & rear. These arms are super lightweight & stronger than stock. They also include spherical aurora bearings for near frictionless motion, strength and reduced deflection.