I only currently know of Stoptech's 355mm F/R kit. My question with regards to that is they are developing another rear system for a four wheel kit......so what's wrong the with F/R 355mm set-up? Anyone have any other info, experience?

Also, in general, how do the weights of some aftermarket systems compare to stock? Don't want to be adding unnecessary unsprung weight.

 

they're making a 13" rear kit to use with thier 13" front kit.

other 4 wheel kits ... endless, ap, rotora

 

DO a search on "stoptech" in this forum.
Jeff at Stoptech has been discussing the development progress of multiple kits for the 350...

 

Yeah I want to know this also. No one ever mentions if after market brake kits is lighter or heavier than stock

 

they are going to be somewhat heavier (but not too much heavier) as you are upgrading to a larger rotor and a larger caliper... the only way you are going to lose weight upgrading brakes is if you go with a ceramic setup similar to the ones found on high-end Porsches, etc ($8-10K+)

 

Rotora, Greddy....