AIRDRIVE DESIGN applied to the Caldia 25 LT generation. Monocoque frame combined with Zaïon-V carbon rotor. 6+1 bearings including 1 CRBB. ATD-L brakes on sizes 2000 to 4000. ATD TOUGH carbon disc brakes on size 5000. Long Cast aluminum spool. Cross spiral winding. One-piece screw-in aluminum crank. MagSealed technology limits impurity intrusion.