From the Endless USA Website:
New for 2010: For Select 6 piston, and Mini 6 pot applications, the new “Takumi” 6 piston caliper is available. The Takumi caliper uses a tongue and groove joint instead of 3 bolts on either side of the caliper to secure the 2 forged pieces. This joint makes the caliper more rigid, and offers a cleaner look.
Kwame
Z1 Performance
Jonathan
Corner Balance 
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