Girodisc two-piece rotors replace the factory one-piece casting with a CNC-machined aluminium hat and a floating iron ring. The ring is free to expand as it heats, so the rotor does not cone or warp the way a fixed disc does, and pedal feel stays consistent lap after lap. Unsprung and rotational mass both drop, which the car feels everywhere — turn-in, braking distance and ride quality.
This listing: Mercedes S55, CL55 Front Rotors — genuine Girodisc part number A1-072.
What you get
- CNC-machined aluminium hat with floating drive hardware
- Directional curved-vane iron ring, replaceable on its own
- Direct OE replacement — bolts on, no modification
- Significant unsprung and rotational weight saving
Fitment: Mercedes S55, CL55. Girodisc part numbers are application-specific — confirm the part number against your exact model, caliper and rotor size before ordering.
Lead time: made to order. Ships in 1–2 weeks from order. Genuine Girodisc, made in the USA, with full manufacturer warranty and Australian support.
Professional install required. Bed-in procedure required before hard use.
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