Why we need suspension system?
Imaging riding a basic type bicycle or a "hardtail" American chopper on rough streets, it'll be uneasy for you to handle the bike, isn't it? Of course, it'll getting harder to concentrate if you keep riding, not to mention this will become an unconfortable exrerience in your life. It's because only the tires and wire spoked wheels aren't suficient to cope with the bumps. Suspension system is the cure to reduce the shocks, to stabllize the vehicle and to ease rider's fatigue.

Suspension system outline
For a two wheeler, the suspension system can be divided into front and rear part. The biggest difference between the front and the rear suspension is the former has to take steering function.
Front suspension
Even though there are diverse types of front suspension in the market, but here we only talk about the structures from SYM.
  • Telescopic fork: simple structure, easier to maintain, lower cost, higher unsrung mass and good in comfort.
  • Upside down fork: complex structure, harder to maintain, higher cost, lower unsprung mass and good in performance.
  • Single triple clamp: simple structure.
  • Double triple clamp: higher rigidity and stability.
Rear suspension
  • Single shock absorber: lighter weight, lower cost, basic performance.
  • Dual shock absorber: heavier weight, better handling and comfort.
  • Single sided mono shock absorber: usualy fit for sport scooters and benefits luggage box installation.
  • Single sided multilink mono shock absorber: fit for advanced sport scooters, combines performance and luggage box installation.
  • Mono shock absorber: commonly fit for sport bikes.
  • Multilink mono shock absorber: also fit for advanced sport scooters, handling is improved.