Yes, all RB400 series will have the same offset including the current 4 pot caliper we are offering and will fit under 17" wheel.
RB400 series will be our 4 piston calipers with different piston bore sizes set up i.e. RB425 (redesigned based on current 4 pot) and RB430 and RB440 (new design using heavier duty pad). all Up to 32mm rotor.
RB600 series is our newly designed 6 piton calipers which has the same offset as our current 6 piston caliper but with compact body and also can fit under 17" wheel, but for thicker rotors (up to 34mm)
Our current 6 piston caliper will be re-designed to become 8 piston caliper series.
With this re-line up of our calipers, RB shall become more competitive and capable in serving the performance brake industry.