s we get older, we all lose a little spring in our step. The same goes for a motorcycle’s fork springs, which can “sack out” and reduce suspension travel. This shows up in several different ways. One is excessive front-end dive under hard braking. Another is front-end “push” in corners, caused by the too-soft springs that make the bike feel reluctant to turn. Both of these problems can be quickly and easily solved with progressive-rate fork springs from Progressive Suspension.
     Progressive Suspension fork springs are progressively wound for a smooth ride and more control under braking. Dual-rate springs have a “step” in their compression. A 10-20 spring, for example, will require 10 pounds to compress it an inch until the light coils bind, and then 20 pounds per inch. A true progressive spring is wound such that it takes 10 pounds to compress the first inch, then 11 for the next, then 12, and so on, without the sudden crossover from light to heavy that you get in dual-rate springs.
     Progressive Suspension’s spring material is guaranteed for life against sacking or breaking—if they sack more than a quarter of an inch Progressive will replace them. So the next time a customer complains of front-end dive or cornering problems, recommend a set of new Progressive Suspension progressive-rate fork springs. They’ll put the spring back in any bike’s step.

For more information see:
www.progressivesuspension.com


Drag Specialties Magazine
Volume 11 #7


Parts Magazine Index