The stock Kawasaki KLR 650 rear shock spring is very weak, with a rate of 288 lbs and a straight wind as shown on the O.E.M. shock at left. 

Our preferred method to correct the seriously under sprung and lightly dampened rear suspension is to replace it with our superior Progressive Suspension 420 Series Shock.

For those of you on a budget and unable to buy the entire shock, we can provide just the replacement progressively wound spring with a rate of 350-390 lbs as shown below.

Note: We don't normally recommend the use of this spring. 

Reason: For many applications it has the potential of making the well known under-dampening problem worse. This is especially true for KLR 650s being used for serious touring, riding two-up or aggressive riding off-road. Although the new spring does not fit the stock shock body's smaller diameter as well as we would like, it does work.

Please call our Tech Line and we will be happy to assist you with further detailed information.

Now that we've warned ya...

Larry Roeseler Signature Series Shock Springs have been specifically designed for each application. Larry, along with Progressive Suspension, have tested and fine tuned each spring application to give you the best performance possible. The Progressively Wound Signature Series Shock Springs are made from the highest quality spring materials available, then shot peened for strength. How good are they? They are guaranteed for life against sagging or breakage.

Progressive Rate Springs have many advantages over straight rate springs. A straight rate spring only offers linear resistance to compression and is a compromise. For example, if you have a 20lb. straight rate spring it will take 20lbs. of force to compress the spring one inch. Then it will take 20 more lbs. of force to compress it the next inch, and so on, until the end of the travel.

A Progressive Rate Spring has the advantage of a rising rate resistance to compression. For example, a 15lb. to 25lb. Progressive Rate Spring will take 15lbs. to compress it the first inch, then 17lbs. the next inch, and so on, until the end of the travel; it will take 25lbs. to compress it the last inch. 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 stiff enough at the end of the travel to soak up the big hits.

Note: This product is currently unavailable.