Progressive Fork Springs Standard Vs Heavy Duty

Spring rates have been chosen to reduce front end dive under braking.

Progressive fork springs standard vs heavy duty.

Progressive rate fork springs have several advantages over straight rate springs. These springs are not suspension main springs but are supplemental springs. The second type of progressive rate suspension springs the dual rate spring with two linear rates connected with a rate transition range is a much more sophisticated suspension spring. I believe you can send them in and have the springs changed.

Purchase the progressive suspension heavy duty stock length fork springs at j p cycles your source for aftermarket motorcycle parts and accessories with free everyday tech support. The design is much more focused on the specific use for the spring. I have 444 heavy duty rears and they feel great on my rk. It s my understanding that the difference between the heavy duty and the regular progressive shocks are the springs.

In other words the 90 130 lb in spring which is considered heavy duty for longer shocks is a completely different spring than the 90 130 lb in spring which is standard on shorter shocks. Spring rates have been chosen to reduce front end dive during braking yet still provide excellent ride comfort and also balance the weight of a bike laden with greater than average loads. As the bike is much lighter than stock i opted for the 412 series shocks in standard rather than heavy duty configuration. The shocks are available in chrome or black covers and springs.

The benefit of this is that the spring can be soft enough at the start of the travel to offer a plush ride yet be firm enough at the end of the travel to soak up the big bumps. Progressive front fork springs for gl1500 soak up small bumps yet are firm enough to absorb the larger ones. Improves handling while maintaining oem geometry. A progressive rate spring has the advantage of a rising rate resistance to compression.