Motorcycle Products:Shock Absorbers(Front Forks)

Functions and Roles

Shock Absorbers consists of spring which determine posture and cushioning buffer action and a damper which suppresses vibration. On 2-wheeled vehicles, shock absorbers are separated into the categories of the "front fork" and "rear cushion".
The front fork:

  • Front fork serves as rigidity component just like a frame. Vehicle specific rigidity given to present run out while braking and changing the direction of a wheel though handle operations.
  • Maintain balance of vehicle frames stability and secures straight running stability as well as rotationality of the vehicle.
  • The front fork prevents excessive weight on the front wheel during drastic sudden applications the break, softens bumping when driving on rough road surfaces.
  • The front fork maintains proper damping through traction with the road surface.

Types of Shock Absorbers

Upright telescopic type

Dual Bending Valve

Dual Bending Valve

In place of a free-valve structure, a new-structure valve unit is installed. Check valve and disc valve are independently positioned with extension and retraction sides to control damping force. This valve unit can acquire damping force characteristics featuring linear change from the piston low-speed range to high-speed range.

Technological Information [SDBV]

   
Free-valve type

Free-valve type

Structure is relatively simple, providing consistent performance. This can be used with a broad range of bodies, from small scooters to large cruiser motorcycles.

   
Cartridge type

Cartridge type

With this damper, the structure is highly rigid and capable of producing consistent damping force. This is mainly adopted for large on-road models, etc.


Inverted telescopic type

Big Piston Front Fork [BPF]

Big Piston Front Fork [BPF]

With the structure's larger piston size, damping force response improves and high performance is achieved. This is mainly adopted for large on-road models.

   
Separate Function front Fork [SFF]

Separate Function front Fork [SFF]

With a pressure separation damper on one fork tube and spring mechanism on the other, functions are divided, resulting in both high damper performance and lighter weight. This is mainly adopted for motocross race models.

   
Balance Free Front Fork [BFF]

Balance Free Front Fork [BFF]

Showa's unique "balance-free" structure prevents damping force from being generated across the piston inside the cylinder. With the damping force-generating mechanism placed outside of the cylinder and pressurized, damping force response is improved.

Technological Information [BFF&BFRC-lite]

   
Cartridge type

Cartridge type

With this damper, the structure is highly rigid and capable of producing consistent damping force. This is mainly adopted for large on-road models, etc.

   
Pressurized separation type

Pressurized separation type

With the damper pressurized, performance greatly improves. This is mainly adopted for motocross race models.


Electronically Equipped Ride Adjustment [EERA]

Electronically Equipped Ride Adjustment [EERA]

SHOWA EERA Balance Free Damping Force

Showa has independently developed electronically controlled hydraulic valves for motorcycles. In the past, these valves were often converted from automobile use. By adopting characteristics optimized for motorcycles, the product achieves superior operation stability and ride comfort.

Technological Information [EERA]