On the Suzuki style secondary's you can drill new holes to clock the secondary spring a little tighter. An old arctic cat service bulletin for High altitude is attached. You don't necessary need to be at a high altitude to get better backshifting and keeping the CVT gear lower longer. This may work out well for many of you who have installed larger diameter heavier weight tires even at at sea level.I found the best gains were with airdam stage 1.I tried the dalton clutch kit with yellow spring and 23g rollers and it was ok but when I got my primary machined it was "holy crap".The 400 and 500 Suzuki engine cats don't have holes to reclock.They don't have a helix like in the video.
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