you get a nice discount from the tribe if you have a green 32!! the 6 piston front calipers and the racing brake 340mm rotors weigh 9 lbs per side less than the 2 piston 330mm rotor setup. 18 lbs total lighter and adding 8 more pistons and 10mm rotor size!! the rear setup actually adds 5 lbs per side but your adding 30mm rotor size and 2 more pistons per side