 Engineers developed a two part shaft connected by a spline which allows system to flex under load mimicking the feel and performance benefits of a traditional chain drive.The VFR1200F incorporates the C-ABS combined braking system sourced from the CBR600RR and CBR1000RR sport bikes.C-ABS distributes the braking forces completely electronically sending information from the brake lever into a separate braking computer before the system applies hydraulic pressure to the brakes.