GIRODISC D2-154 Rear Brake Rotors Replacement Rings Kit 390mm for PORSCHE 911 (992) GT3/GT3 RS/Carrera S/4S/GTS ymm_10 Ratio with Standard: 1st Stage:

Ratio with Standard: 1st Stage: 136%

Aggressive lateral bolstering for superior torso and leg support

the seat delivers high torsional strength and exceptional lateral stability

Renault 5 GT turbo

This equates to increases of up to 10hp which is a remarkable gain for an easy to fit bolt on modification

GIRODISC D2-154 Rear Brake Rotors Replacement Rings Kit 390mm for PORSCHE 911 (992) GT3/GT3 RS/Carrera S/4S/GTS ymm_10 Ratio with Standard: 1st Stage:Our replacement rings are sold in pairs and include replacement hardware. The only parts you will reuse are your existing GiroDisc hats. Specifications: Disc Finish: Straight Slotted Disc Vane Style: Curved Vane Material: Cast Iron Disc Type: Vented Disc Diameter (mm): 390 Min Thickness (mm): 30,0 Max Thickness (mm): 32,0