A mountain bike comprises: —a frame (10);—a rear wheel (2) having its axle mounted in rear dropouts (16) of the frame;—a front wheel (3) having its axle mounted in front dropouts (18) of the frame;—a pedal set (20) comprising a spindle mounted for rotation in a bottom bracket shell (19) of the frame, two cranks (22) mounted at the opposite ends of the spindle, and two pedals (21) mounted for rotation at the free ends of the respective cranks; wherein each crank (22) has a crank length L of 164 mm or less; wherein the bottom bracket shell (19) has a Practical Bracket Height PBH of 294 mm or less, wherein PBH=BH−β.Math.(α.Math.FST+(1−α).Math.RST), wherein BH indicates bracket height, FST indicates Front Suspension Travel, and RST indicates Rear Suspension Travel.

A suspension assembly including a core member; and a skin member bonded on said core member. The skin member having a higher strength than the core member.

A suspension assembly including a core member; and a skin member bonded on said core member. The skin member having a higher strength than the core member.

A tiltable electric tricycle as in the present invention comprises: (a) a frame, (b) a front fork mounted to the frame, (c) a front wheel with hub motor mounted to the front fork, (d) a seat, (e) a steering handle bar, (f) a pair of laterally spaced rear wheels on a common axle, (g) a support base with two quick release clamps for securing the axle of the rear wheels and the base has a shaft tube fitted into the bottom tube of the frame to connect to the frame rotatably, (h) a pair of footrests, (i) a battery to power the hub motor; furthermore the bottom tube points to the ground contact point of the front wheel; furthermore the frame has a horizontal oriented metal plate at the rear end of the bottom tube positioned above the support base of the rear wheels; and when the frame is tilted relative to the rear wheel support base to a certain extent, an end of the metal plate touches the rear wheel support base and thereby restricts the extent the frame can tilt; furthermore the axle of the rear wheels is secured to its support base using two quick release clamps and can be released quickly from the quick lease clamps so that the axle with two rear wheels can be separated from the rest of the tricycle for easy transportation; furthermore the two footrests are rotatably connected to the base and can swing toward the rear of the tricycle to reduce the width of the tricycle. In operation, the rider of the tricycle seats on the seat with two feet stepping on the footrests of the rear frame to keep balance and can tilt the front part of the tricycle around the axis line to maintain balance in response to road condition, speed, or turning while the rear part with two rear wheels remain stable.

A fastening system for attaching a component to the monocoque of a motorcycle. The fastening system promotes a plurality of riding configurations for the motorcycle. The fastening system includes an assembly of a track and a movable foot piece. The movable foot piece slides along and is locked in the track to secure the component to the track according to a desired riding configuration of the motorcycle. When the component is the headstock, the fastening system allows for a change in the rake angle.

A suspension device includes two telescopic elements and achieves reduction in a size of a vehicle including the suspension device while securing rigidity sufficient to endure a load applied from a road surface to a wheel supported by the suspension device. A second outer member is smaller than a first outer member and is connected to the first outer member via a first connection portion and a second connection portion arranged in the extension/contraction direction of a second telescopic element, the second outer member is connected to the first outer member via a first connection portion and a second connection portion arranged in the extension/contraction direction of the second telescopic element.

A suspension device includes two telescopic elements and achieves reduction in a size of a vehicle including the suspension device while securing rigidity sufficient to endure a load applied from a road surface to a wheel supported by the suspension device. A second outer member is smaller than a first outer member and is connected to the first outer member via a first connection portion and a second connection portion arranged in the extension/contraction direction of a second telescopic element, the second outer member is connected to the first outer member via a first connection portion and a second connection portion arranged in the extension/contraction direction of the second telescopic element.

A front wheel supporting frame structure of a saddle-ride vehicle includes a main frame, upper and lower arms and a lower frame. The main frame has a front portion and a rear portion. The main frame includes an upper connection portion, a lower connection portion, and an extending portion. The extending portion extends downward. The upper arm has an upper front end portion and an upper rear end portion. The upper rear end portion is movably connected to the upper connection portion. The lower arm has a lower front end portion and a lower rear end portion. The lower rear end portion of is movably connected to the lower connection portion. The lower frame includes a bottom portion and an upright portion. The bottom portion extends in the vehicle front-rear direction. The upright portion has a top portion connected to the extending portion.

A front wheel supporting frame structure of a saddle-ride vehicle includes a main frame, upper and lower arms and a lower frame. The main frame has a front portion and a rear portion. The main frame includes an upper connection portion, a lower connection portion, and an extending portion. The extending portion extends downward. The upper arm has an upper front end portion and an upper rear end portion. The upper rear end portion is movably connected to the upper connection portion. The lower arm has a lower front end portion and a lower rear end portion. The lower rear end portion of is movably connected to the lower connection portion. The lower frame includes a bottom portion and an upright portion. The bottom portion extends in the vehicle front-rear direction. The upright portion has a top portion connected to the extending portion.

A main body frame (100) for an electric motorcycle comprises a front fork support member (101) with a front fork through hole for loading a pivot stem of a front fork (200), the front fork through hole has a pivotal axis arranged in a central plane (P) of the main body frame; the main body frame further comprises a right and a left frame part (102, 105) arranged on opposite sides of the central plane of the main body frame, each having an elongated shape and being formed of an upper part (102a, 102b) and a lower part (102c, 102d), respectively at different sides of an elongation direction changing portion (102e), a first buffer member (120) attached, at opposite sides thereof, to the right and the left frame part, and crossing the central plane. wherein starting from the respective elongation direction changing portions thereof. the upper parts of the left and the right frame part extend inwardly towards the central plane so as to embrace the front fork support member, and are attached to opposite sides of the front fork support member, and a largest width (a7) of the main body frame in a width direction (Z) perpendicular to the central plane is 10 cm or more and 30 cm or less.