Brake caliper structure of straddle seat off-road vehicle

A brake caliper structure of a straddle seat off-road vehicle including a wheel-in disc brake accommodated in a wheel and having a brake disc secured to a hub of the wheel for rotation therewith, a knuckle rotatably supporting the hub via a bearing, and an axle shaft secured to the hub for rotation therewith, the brake caliper structure comprising:

• a brake caliper including a fixed part mounted to the knuckle, a movable part, two connecting portions interconnecting the fixed part and the movable part so that the movable part is movable relative to the fixed part in a direction parallel to an axis of rotation of the wheel, a pair of friction pads for clamping the brake disc, and a piston movably disposed in the movable part for forcing the friction pads against the brake disc,
• wherein one of the connecting portions includes a guide hole formed in the fixed part and extending parallel to the axis of rotation of the wheel, and a slide pin connected to the movable part and slidably received in the guide hole of the fixed part, and the other connecting portion includes a fixed pin secured to the fixed part and extending parallel to the axis of rotation of the wheel, and an elastic member disposed between the movable part and the fixed pin.