SECONDARY DRIVEN SPRINGS: SKI DOO MANUFACTURED FROM THE HIGHEST QUALITY MATERIAL FOR DEPENDABILITY. ALLOWS YOU TO FINE TUNE THE SHIFT HOLE, SIDE LOAD PRESSURE AND FULL SHIFT OUT POUNDAGE. ALL EPI SPRINGS LISTED ARE MANUFACTURED WITH A 5% TOLERANCE. SHOT PENNED FOR DURABILITY. WHITE 2 1/2" LOAD 28; 1 1/4" LOAD 49. NOTE: STOCK S/D BEIGE SPRING SPEC IN 45-90"