KIT FORK SPRINGS BITUBO MH39 HONDA CBR600 F (NO ABS) 2011 > 2013. Fork springs kit lin. K=0.90 + 1 Lt. Bitubo fork springs are manufactured in Cr-Si alloy steel, heat treatment, stabilizing procedure and final shot-basting with steel balls, thus ensuring very high performances for a long time. The kit includes the specific oil, whose density comes from the R and D study. The standard base set-up springs are specific for a rider’s average weight of 70/80 Kg, for a different rider’s weight see the catalogue applications chart. The pack is supplied with oil specifically dedicated to that bike model. The mounting instructions are complete with oil type and quantity indications.