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Unique off-road shocks, with a revolutionary damping system.

Adjustable Rate Suspension (ARS)

The cast or billet ARS is an option on most Dual-Rate Spring sets offered for Street Bikes and limited utility ATV applications. The ARS system allows the rider to increase or decrease the load-carrying capacity of the shocks without changing the pre-load of the springs. Depending on the application and spring set, the rider can increase the load capacity of the shocks up to 50 percent. This allows the shocks to be correct for solo riding, but still be able to handle the increased weight of a passenger and/or baggage. ARS can also be employed during solo riding to stiffen the rates for aggressive riding, or for riding on rough, broken pavement.

The ARS system consists of an indexing lever and a stepped cup that contains the short spring of the dual-rate. The position of the lever in relation to the steps in the cup determines how long the spring set remains on the soft, or initial, rate of the dual-rate spring set. On most ARS applications, four positions can be selected from full stiff to full soft. Indexing is done in a matter of seconds by rotating the lever or the cup by hand.

The aluminum-bodied shocks, the Racer and Pro Racer have threaded pre-load as standard. The ARS cups for these are also threaded to allow the spring pre-load to be changed. Pre-load is changed by turning the cup to either shorten or lengthen the spring stack. When the spring stack is shortened (measured from the retainer to the ARS cup end) the pre-load is increased. That means that the ride height will be higher and the shock will be slightly stiffer. Conversely, if the ARS cup/pre-loader is "unscrewed" the stack will get longer and there is less tension on the spring set. This means that the ride height will be lower and the shocks will be slightly softer.

With the ARS system, once the ride height is established, stiffer settings for rough roads or increased load capacity are accomplished by turning the lever -- or the cup if the lever position will cause interference with the tire, chain or belt guard, or passenger.

NOTES:
   Adjustment of the ARS should only be made while the motorcycle is unloaded, to reduce the load on the springs.

   It is important to make sure that a step in the cup is positioned directly over the tang on the lever. This will prevent damage to the cup and/or lever that can be caused by making partial contact between the tang on the lever, and a step on the cup.

   TUNING TIPS:
   The "softest" setting on the ARS does not mean the ride will be the most comfortable at that setting. It means that this is the softest spring setting which would be employed on smooth roads with a solo rider. Excessive suspension bottoming caused by rough roads or by the addition of a passenger or bags will cause a harsh ride when the shock is adjusted to this setting. To eliminate this bottoming, adjust the ARS to the stiffer position that does not bottom for a more comfortable ride. Hence, sometimes stiffer is softer.

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