Yours is 6-piston on the front. discs are 380mm

 

Thank you. I assume that the rear are also 6 piston?

 

My car is same setup. I have 2013 V8 Vantage with sports pack. 6 pot calipers in front 380 MM rotors, rears 4 pot calipers

 

OP - I think you emailed me already, but just for everyone's benefit:

The V8V originally came with 355mm fronts (the rears are the same for all MY.) Those 355mm fronts are the ones we sell the Porterfield R4-S 1165 for. 2011 when the V8VS came out, those used the 380mm front rotors which take the more expensive pads you're referring to (although the Porterfields we sell are less than 20% of the cost the dealer quoted you.) From 2011 to 2013 there's some of both, and 2013-on they switched over to the co-cast option as well as the 2-piece 380mm rotors on all the cars.

So rears for all: http://www.velocityap.com/Aston-Vant...in-pf-rear.htm

Front for 355: http://www.velocityap.com/Aston-Vant...n-pf-front.htm

Front for 380: http://www.velocityap.com/Aston-Vant...-front-v8s.htm

 

 

Porterfield sales does not seem like they know their parts
They told me for a 2013 V8V (non S), that the R4-S model #s:

6 Piston Front and 4 Piston Rear
Fronts AP1990
Rears AP1165

4 Piston Front and 4 Piston Rear
Fronts AP1165
Rears AP1166

Stuart says 6 Piston Front and 4 Piston Rear
Fronts AP1291
Rears AP1166