RIO MDC Sink Tips - 2026

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RIO's smoothest casting and most comprehesive series of sink tips.MDC Sink Tips feature a progressive density design that makes the line sink faster where it counts (closer to the fly), while providing the smoothest possible turnover in a sink tip.Features: 12ft and 18ft lengths to match a wider range of rods Color-coded rear loops for quick size matching Three sizes with color-coded rear loops cover RIO’s entire range of Scandi Bodies >#5/6 (white), #7/8 (blue), and #9+ (gray) Clear intermediate available in the H/I and F/H/I tips Progressive density design for faster sink near the fly Smooth turnover for stable casting and clean energy transfer Specs SKU Size Length Weight Sink Rate 6-19967 #5/6 12ft (3.7m) 75gr (4.9gm) Float 6-19968 #5/6 12ft (3.7m) 75gr (4.9gm) H/I 6-19969 #5/6 12ft (3.7m) 75gr (4.9gm) I/S3 6-19970 #5/6 12ft (3.7m) 75gr (4.9gm) S3/S5 6-19972 #7/8 12ft (3.7m) 90gr (5.8gm) Float 6-19973 #7/8 12ft (3.7m) 90gr (5.8gm) H/I 6-19974 #7/8 12ft (3.7m) 90gr (5.8gm) I/S3/S5 6-19975 #7/8 12ft (3.7m) 90gr (5.8gm) S3/S5 6-19976 #7/8 12ft (3.7m) 90gr (5.8gm) S5/S7 6-19977 #9+ 12ft (3.7m) 100gr (6.5gm) Float 6-19978 #9+ 12ft (3.7m) 100gr (6.5gm) H/I 6-19979 #9+ 12ft (3.7m) 100gr (6.5gm) I/S3 6-19980 #9+ 12ft (3.7m) 100gr (6.5gm) S3/S5 6-19981 #9+ 12ft (3.7m) 100gr (6.5gm) S5/S7 6-19982 #7/8 18ft (5.5m) 130gr (8.4gm) Float 6-19983 #7/8 18ft (5.5m) 130gr (8.4gm) F/H/I 6-19984 #7/8 18ft (5.5m) 130gr (8.4gm) H/I/S3 6-19985 #7/8 18ft (5.5m) 130gr (8.4gm) I/S3/S5 6-19986 #7/8 18ft (5.5m) 130gr (8.4gm) S3/S5/S7 6-19987 #9+ 18ft (5.5m) 150gr (9.7gm) Float 6-19988 #9+ 18ft (5.5m) 150gr (9.7gm) F/H/I 6-19989 #9+ 18ft (5.5m) 150gr (9.7gm) H/I/S3 6-19990 #9+ 18ft (5.5m) 150gr (9.7gm) I/S3/S5 6-19991 #9+ 18ft (5.5m) 150gr (9.7gm) S3/S5/S7 Complete your System: Scandi body/head (matched system performance) Coated running line (best handling, fewer tangles) Tip wallet / leader wallet (organized depth changes) Leaders and tippet (standardize turnover and sink behavior) Q: What does “MDC” do that a standard sink tip doesn’t?A: The progressive density profile sinks fastest closest to the fly, helping you achieve depth and maintain smoother turnover.Q: Should I choose 12' or 18'?A: 12' is a versatile baseline for many setups. 18' is ideal when you want more sustained depth control and a longer tip profile for specific rods and swing characteristics. Show more