Description K4 Fins rear surf fins are available in L, M, S and Q (quad) sizes, in both FCS and Futures. Rears are available as single fins for £12.95 each. These work great in kite boards, SUP’s and grovellers with their extra base width and area. SURF – Rears. SIZE HEADS AREA CHORD DEPTH LARGE FUTURES/FCS1 107 11.7 12.0 MEDIUM FUTURES/FCS1 98 11.3 11.5 SMALL FUTURES/FCS1 90 10.8 11.0 QUAD FUTURES/FCS1 83 10.4 10.6 (All areas are cm², all lengths are cm)
