STOPTECH Difference ??
 

What is the difference in the follow two kits ?

83.827.4300.71 ($1700)

83.827.4300.73 ($2400)

When I check stoptech.com I see that they list the 83.827.4300.71 but not the .73

Looking around on other FT86 sites I find the 83.827.4300.73 kit and it's about $700 more ??

71 is black caliper, slotted uncoated rotor
73 is black caliper, slotted zinc coated rotor

I'd suggest checking out thmotorsports for their prices. I just bought my stop tech BBK through them

Thanks djdnz, I did see something about "coating" but wanted to confirm. Zinc coating would help with rust, but about $700-ish more, seems a little pricey...