We have had excellent results using this progressive rear spring in our Husaberg FE and the KTM EXC range. This progressive spring enables the shock to handle much harder landings and 'g outs' over the standard spring without making the bike have that rigid hard feeling in the rear.   

Due to riders being of different weights and speed (some riders do a little MX as well)  we recommend you send us an email to confirm the correct spring for your application if your weight falls between to options (eg 82kg's).  

These springs also suit older models and we will list as soon as possible.  We can advise which spring will suit your bike, simply just send us an email with bike details, rider weight and the terrain you most commonly ride.  We answer all emails as promptly as we can.