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As I recall ski-doo never published a spring rate on the white or beige spring other than the white had a little higher rating. Unlike the RER driven which is a push / pull spring (no winding lilke a clock). the beige and white spring were in drivens the had to be wound to change the lbs of force to open them. Depending on the driven A_B_C hole and positon and the HELIX number holes 1-2-3-4-5-6- you can change the spring rate to most anything. If this is what you are looking for I would start in the 18-20 lbs range I think A-6 or B-6 with the beige spring would get you close to start with and then it depends on cam angel and ramps and fly weights. The beige spring is the best of the two.
 
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