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Girodisc A1-308
Pair of two-piece floating front brake rotors
Girodisc is an American company founded in 2003 in California and based since 2007 in Bellingham, Washington, where it designs and builds two-piece floating brake rotors for sports cars, supercars and track cars. The iron castings for the friction rings are poured in the USA and every part is machined and inspected in the Girodisc factory.
The cast iron friction ring has curved internal vanes that pump air outwards and bring temperatures down quickly, and it is joined to the 6061-T6 aluminium hat with floating steel drive pins. The ring can therefore expand freely with heat, self-centres between the pads and resists warping and judder even after many laps. Compared with the original rotor it also reduces unsprung weight.
They are the choice of many enthusiasts who take their car to track days: they replace the original rotors, including factory-fitted Brembo or other brands, and work with the standard calipers. The first purchase is the pair of complete rotors with hats; once the ring is worn, often after more than one season depending on use, only the pair of replacement rings is needed (D1 series for the front, D2 for the rear).
Diameter: 360 mm
Thickness: 36 mm
Minimum thickness: 34 mm
Height: 65 mm
OE rotor diameter: 360 mm
Finish: curved slots
Construction: two-piece floating
Ring material: cast iron
Package contents: 2 complete rotors with hats (left A1-308SL and right A1-308SR)
Pair code: A1-308
Part numbers: A1-308SL, A1-308SR
Images for reference only: the photo is a generic Girodisc picture; hat shape, drilling and ring pattern vary by application. The technical drawing shows the correct orientation of the left and right rotors.
To complete the system see the Girodisc brake pads and all Girodisc rotors for Mercedes-Benz.
Availability: usually shipped within 3-4 working days from the European warehouse; codes not in stock are delivered within about 15 days. Contact us for up-to-date availability.
Compatibility:
Mercedes-Benz AMG GT 4.0 Twin Turbo (C190) 2015-2021
Mercedes-Benz AMG GT S 4.0 Twin Turbo (C190) 2014-2020
Mercedes-Benz AMG GT 43 3.0 Turbo Supercharged (X290) 2018-2022
Mercedes-Benz AMG GT 50 3.0 Turbo Supercharged (X290) 2018-2022
Mercedes-Benz AMG GT 53 3.0 Turbo Supercharged (X290) 2018-2022
Mercedes-Benz AMG GT Roadster 4.0 Twin Turbo (R190) 2016-2021
Mercedes-Benz C63 AMG 6.2 (C204) 2011-2015
Mercedes-Benz C63 AMG 6.2 (W204) 2007-2014
Mercedes-Benz C63 AMG DR520 6.2 (W204) 2011-2014
Mercedes-Benz C63 AMG 6.2 (S204) 2007-2014
Mercedes-Benz C63 AMG 4.0 Twin Turbo (A205) 2015-2018
Mercedes-Benz C63 AMG 4.0 Twin Turbo (C205) 2015-2018
Mercedes-Benz C63 AMG 4.0 Twin Turbo (W205) 2015-2018
Mercedes-Benz C63 AMG 4.0 Twin Turbo (S205) 2015-2018
Mercedes-Benz CL65 AMG 6.0 Twin Turbo (C215) 2002-2006
Mercedes-Benz CL500 5.5 Twin Turbo (C216) 2010-2014
Mercedes-Benz CLK DTM AMG 5.4 Supercharged (A209) 2004-2006
Mercedes-Benz CLK DTM AMG 5.4 Supercharged (C209) 2004-2006
Mercedes-Benz CLK63 AMG Black Series 6.2 (C209) 2007-2009
Mercedes-Benz CLS55 AMG 5.5 Supercharged (C219) 2004-2006
Mercedes-Benz CLS63 AMG 6.2 (C219) 2006-2010
Mercedes-Benz CLS63 AMG 5.5 Twin Turbo (C218) 2011-2017
Mercedes-Benz CLS63 Shooting Brake AMG 5.5 Twin Turbo (X218) 2012-2018
Mercedes-Benz E55 AMG 5.5 Supercharged (W211) 2003-2006
Mercedes-Benz E63 AMG 6.2 (W211) 2006-2009
Mercedes-Benz E55 AMG T-Modell 5.5 Supercharged (S211) 2003-2006
Mercedes-Benz E63 AMG T-Modell 6.2 (S211) 2006-2009
Mercedes-Benz E500 4-Matic 4.7 Twin Turbo (W212) 2011-2016
Mercedes-Benz E500 4-Matic 5.5 (W212) 2009-2011
Mercedes-Benz E500 5.5 (W212) 2009-2011
Mercedes-Benz E63 AMG 5.5 Twin Turbo (w/ Iron Discs) (W212) 2011-2016
Mercedes-Benz E63 AMG 6.2 (w/ Iron Discs) (W212) 2009-2011
Mercedes-Benz GLC63 AMG 4.0 Twin Turbo (X253) 2017-2022
Mercedes-Benz S600 5.5 Twin Turbo (-A000100) (W221) 2005-2006
Mercedes-Benz S600 5.5 Twin Turbo (W221) 2006-2013
Mercedes-Benz SL55 AMG 5.5 Supercharged (R230) 2002-2006
Mercedes-Benz SL55 AMG 5.5 Supercharged (R230) 2006-2008
Mercedes-Benz SLK55 AMG 5.5 (R172) 2012-2016
List supplied by the European Girodisc distributor. If your car is not listed or you have any doubt, contact us before ordering.
Pair of two-piece floating rotors, complete with aluminium hats, to fit with the standard calipers.
Pair made up of the single part numbers: A1-308SL (left) and A1-308SR (right)
Fits: Mercedes-Benz AMG GT (C190, X290, R190), C63 AMG (C204, W204, S204, A205, C205, W205, S205), C63 AMG DR520 (W204), CL65 AMG (C215), CL500 (C216), CLK-Class CLK DTM AMG (A209, C209), CLK63 AMG Black Series (C209) and more versions (see list below)
Before ordering check the compatibility list at the bottom of the page or ask us for advice.

SPENDING OVER €400?
GET FREE SHIPPING ACROSS THE EU*!
At M4Tuning, we reward you: enjoy free shipping across the European Union when your order exceeds €400!
*Some areas excluded: Malta, Canary Islands, Réunion, Ireland, Greece, and Cyprus.
PAY IN EASY INSTALLMENTS WITH KLARNA
Select Klarna at checkout and split your purchase into interest-free payments, with no additional costs.
*Subject to approval by Klarna at the time of checkout.| FOLLOW US ON INSTAGRAM | FOLLOW US ON FACEBOOK |
| | |
WE SHIP EVERY ORDER DIRECTLY FROM OUR WAREHOUSE IN ITALY, USING ONLY SELECTED EXPRESS COURIERS.
NOT ALL ITEMS ARE IMMEDIATELY AVAILABLE. ASK US FOR CURRENT STOCK STATUS.