Especially slim and narrow design straight pull spoke pattern (tangential lace pattern on the rotor mount side and radial lace pattern on the connection side) Optimized generator design with conforming to German legal regulations approval, also for 29″ wheels integrated SON Coaxial Socket for a SON Coaxial Connector Higher power output than the SON 28 (suitable for charging applications using a charger) For rotors with a Shimano center-lock-mount
