An aerodynamic front fork assembly for a bicycle may include an elongated crown portion extending from a steerer tube to a distal end behind a front wheel, with one or more fork blades projecting in a generally forward direction from the distal end of the crown portion to engage the front wheel. The crown portion may substantially fill the gap between the front wheel and the down tube of the bicycle, thereby collectively forming an airfoil with the front wheel and the down tube.

An aerodynamic front fork assembly for a bicycle may include an elongated crown portion extending from a steerer tube to a distal end behind a front wheel, with one or more fork blades projecting in a generally forward direction from the distal end of the crown portion to engage the front wheel. The crown portion may substantially fill the gap between the front wheel and the down tube of the bicycle, thereby collectively forming an airfoil with the front wheel and the down tube.

A shock absorber has an inner tube embedded in a steering stem shaft and an outer tube provided slidably. A front fork is fixed to a lower end of the outer tube, and the inner tube is fixed to an upper end of the steering stem shaft. The steering stem shaft is provided with a guide trench extending in a telescoping direction and having a long hole shape. A roller bearing is provided on an outer circumferential surface of the outer tube and is inserted into the guide trench movably along the guide trench. As a result, relative movement between the steering stem shaft and the outer tube in the telescoping direction is permitted while relative rotation is restricted.

A shock absorber has an inner tube embedded in a steering stem shaft and an outer tube provided slidably. A front fork is fixed to a lower end of the outer tube, and the inner tube is fixed to an upper end of the steering stem shaft. The steering stem shaft is provided with a guide trench extending in a telescoping direction and having a long hole shape. A roller bearing is provided on an outer circumferential surface of the outer tube and is inserted into the guide trench movably along the guide trench. As a result, relative movement between the steering stem shaft and the outer tube in the telescoping direction is permitted while relative rotation is restricted.

A suspension device of a bicycle front fork is installed in a head tube of a bicycle handlebar. The suspension device includes: a cylinder with a bottom fixed to a base of the bicycle front fork and a top passed into the head tube; a piston rod with a top fixed to an inner wall of the head tube and a bottom having a piston and extended into the cylinder; a spring device coupled to the piston rod and having a force to push the piston rod away from the cylinder. The cylinder below the piston has an air chamber communicated with an intake valve of the base. The air pressure of air chamber may be adjusted to adjust the buffering pressure of the spring device, so that a user may adjust the shocking pressure of the front fork.

An elastomerically cushioned cycle stem, referred to as an e-stem, connects a cycle handlebar to a cycle fork steerer tube. The e-stem has a rigid interchangeable swingarm that rotates, i.e., pivots about an axis located behind a steerer tube bore of the base. A fastener rotationally secures the swingarm to the base and clamps the base to the steerer tube. An interchangeable elastomeric block, engaged by the base and swingarm, absorbs impacts from the road or trail, as the swingarm pivots. The base sides provide interior rotational abutments to the arms of the swingarm, the abutments buttress the pivoting swingarm to provide lateral rigidity of the swingarm relative to the base. The e-stem is adjusted using a plurality of swingarm configurations to alter the stem length and offset, and using a plurality of elastomeric block properties.

An elastomerically cushioned cycle stem, referred to as an e-stem, connects a cycle handlebar to a cycle fork steerer tube. The e-stem has a rigid interchangeable swingarm that rotates, i.e., pivots about an axis located behind a steerer tube bore of the base. A fastener rotationally secures the swingarm to the base and clamps the base to the steerer tube. An interchangeable elastomeric block, engaged by the base and swingarm, absorbs impacts from the road or trail, as the swingarm pivots. The base sides provide interior rotational abutments to the arms of the swingarm, the abutments buttress the pivoting swingarm to provide lateral rigidity of the swingarm relative to the base. The e-stem is adjusted using a plurality of swingarm configurations to alter the stem length and offset, and using a plurality of elastomeric block properties.

A handlebar shock absorbing device includes a sleeve in which a tube is co-rotatably inserted. A rod is inserted into the tube. A first spring is axially received in the sleeve and contacts the tube. A second spring is located in the tube and located between the rod and a cap on top of the tube. The first and second springs absorb shocks transferred to the handlebar.

A handlebar shock absorbing device includes a sleeve in which a tube is co-rotatably inserted. A rod is inserted into the tube. A first spring is axially received in the sleeve and contacts the tube. A second spring is located in the tube and located between the rod and a cap on top of the tube. The first and second springs absorb shocks transferred to the handlebar.

A bicycle fork having a steerer tube assembly having top and bottom steerer tube sections wherein the length of the steerer tube assembly is adjustable by interchanging top steerer tube sections of differing lengths is described. The top and bottom steerer tube sections include one or more meshing teeth and valleys that facilitates the transfer of torque when the top and bottom steerer tube sections are joined together.