Project mu BBK differences.
 

I am looking to get their 4piston/4apd front BBK for my car. However, There are two models:
- forged sport
- Racing 4

Beside the forged and billet construction, what are the differences? They have the same piston size and look pretty much the same? Is there really performance gain for the extra $1000?

forged sport
http://www.project-mu.co.jp/images/p...li_f4x4_en.jpg

racing 4
http://www.project-mu.co.jp/images/p...li_r4x4_en.jpg

Maybe bigger pads? Either way they be GayDM tite yo.

I would just buy some quality brakes without the GayDM markup.

I already have the Brembo 6pot front, 4pot rear..Just trying to see if there is a lighter weight option without spending a fortune..

I take it this isn't for a Z...

no..it's for my Z power R32. Just thought I would ask here since I see alot of you guys run the project mu stuff.

that is the difference...one is a forged caliper, one is a billet caliper

your brembo has far better support as far as pad replacement, rotor replacement

The only difference I can see (other than what Z1 pointed out) is the forged caliper is around 16mm slimmer for better wheel configuration.