Eccentric Rear Top Mounts Porsche GT4 981
Eccentric Rear Top Mounts Porsche GT4 981

Eccentric Rear Top Mounts Porsche GT4 981

When tracking a Porsche GT4, a common problem is managing camber combined with toe.

To increase camber, shims have to be added at the lower arm; but once you reach useful values, the wheel is pushed out so far that the tyre can rub against the wing, with the consequences you can imagine.

Pushing the wheel outwards at the bottom puts the driveshaft under tension, which feeds loads back into the GT4's drivetrain — a known weak point on manual gearboxes.

In addition, this shift limits the adjustment range of the original toe arm eccentric, forcing you to fit an adjustable arm.

Fitting 305 rear tyres could increase grip, but would cause the same rubbing problems.

Our solution:
  • Eccentric top mounts that add 0.8° of negative camber without pushing the wheel outwards.
  • Allows 305mm tyres in addition to the camber gain
  • Compatible with all GT4s ( 718 / 981 / GT4RS / GT4 Clubsport)

Specifications:

  • Billet-machined 6061 aluminium
  • Integrated structural reinforcements
  • GT4 motorsport spherical bearing
  • Stainless spacer
  • Hardware to Porsche quality standards (supplied assembled)
  • Seal
  • Anodised finish
  • Fits in place of the original part

Geoffrey's view:

" The GT4 RS is an excellent car, but to preserve the hierarchy of the range, it is deliberately held back in certain areas compared with the 991 GT3 — notably when it comes to rear tyre size. Switching to 305 mm rear tyres lets you fully exploit the exceptional capabilities of its mid-engine layout. !"

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