Abstract: A brake stem for a motorcycle in which the operation of the front and rear brakes is synchronized. A front brake caliper is attached to a bracket on the front wheel. The braking force on the caliper is transmitted to a master cylinder via the bracket, and serves to compress the master cylinder. The master cylinder includes an outlet which transmits pressurized hydraulic fluid from the master cylinder to a rear brake.

Abstract: To provide a bottom link type front wheel suspension for a motorcycle, which allows accessories such as a headlamp to be easily arranged in front of a front fork. A bottom link type front wheel suspension includes a top bridge and a bottom bridge mounted on upper and lower portions of a steering stem; front forked portions having upper ends mounted on the top and bottom bridges; front wheel supporting arms having front ends vertically swingably connected to the lower ends of the front forked portions; rods having lower ends connected to middle points of the front wheel supporting arms; an arm vertically swingably extending forwardly from the bottom bridge and connected to the upper ends of the rods via a rod hanger; dampers having lower ends connected to the arm; and an upper bracket mounted on the upper portions of the front forked portions and connected to the upper ends of the dampers, wherein the center of the damper substantially corresponds to the center, of the front forked portion.

Abstract: A front wheel suspension in which a pin connects an upper link to a push rod. The push rod is also swingably connected to a front wheel supporting arm. The push rod is arranged such that the displacement gradient of the pin maintains a constant sign throughout a suspension stroke of the front wheel. This motion is accomplished by ensuring that an angle between an axis of a front fork and an axis connecting pivot points on the front wheel supporting arm is maintained at less than 90° throughout the suspension stroke.