Overview
RIO's Leviathan lines have been specifically designed for the largest of tropical species. Each line features a powerful front taper to cast the biggest of flies, a short, heavy head to load bluewater rods, and a hard, tropical coating to prevent the line from wilting in the heat. The line has a 26ft, fast-sinking head seamlessly integrated into an intermediate running line. In addition, a tough, ultra-strong core ensures the line will easily battle large fish being cut on coral and rock structures.
Elite Leviathan - All Models
Line Size | Density | Line Color | Sink Rate | Total Head Weight | Head Length | Total Length | SKU |
---|---|---|---|---|---|---|---|
10/11wt | Black/Trans Tan | Black/Trans Tan | 1.5/7.7 Ips | 400gr (25.9gm) | 26ft (7.9m) | 100ft (30.5m) | 6-19621 |
12/13wt | Black/Trans Green | Black/Trans Green | 1.5/8.5 Ips | 500gr (32.4gm) | 26ft (7.9m) | 100ft (30.5m) | 6-19622 |
14-16wt | Black/Trans Yellow | Black/Trans Yellow | 1.5/9.7 Ips | 600gr (38.9gm) | 26ft (7.9m) | 100ft (30.5m) | 6-19623 |
15wt+ | Black/Trans Orange | Black/Trans Orange | 1.5/10.0ips | 750gr (48.6gm) | 26ft (7.9m) | 100ft (30.5m) | 6-19624 |
7/8wt | Black/Trans Gray | Black/Trans Gray | 1.5/5.5ips | 250gr (16.2gm) | 26ft (7.9m) | 100ft (30.5m) | 6-19618 |
8/9wt | Black/Trans Salmon | Black/Trans Salmon | 1.5/6.7 Ips | 300gr (19.4gm) | 26ft (7.9m) | 100ft (30.5m) | 6-19619 |
9/10wt | Black/Trans Blue | Black/Trans Blue | 1.5/7.2ips | 350gr (22.7gm) | 26ft (7.9m) | 100ft (30.5m) | 6-19620 |
7 models available
4.9
4.9 star rating
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G
Gabrielle B.
Verified Buyer
5.0 star rating
05/02/24
Just got back from Guatemala
Review by Gabrielle B. on 2 May 2024 review stating Just got back from Guatemala
Just got back from Guatemala and although we didn’t have too far of casts to make the line held up well against 9 pacific sailfish!


On Elite Leviathan
J
John H.
Verified Buyer
5.0 star rating
02/09/25
Tropical Series Leviathan
Review by John H. on 9 Feb 2025 review stating Tropical Series Leviathan
During our summer months in North Queensland, Australia, when the water temperature increases in the shallows, Barramundi move out to deeper water and sit in the thermoclines, usually around 15-25 feet.
The Rio Tropical series fly lines get the fly down into the zone quickly. Designed to cast large, heavy flies, with very slick casting perform...Read MoreRead more about During our summer months in North
The Rio Tropical series fly lines get the fly down into the zone quickly. Designed to cast large, heavy flies, with very slick casting perform...Read MoreRead more about During our summer months in North
ance, they are my choice for any large tropical species in deeper water. Read LessRead less about During our summer months in North








On Elite Leviathan
J
Jason F.
Verified Buyer
5.0 star rating
03/23/24
Leviathan 400gr
Review by Jason F. on 23 Mar 2024 review stating Leviathan 400gr
Fantastic line for getting down deep into the trenches for tarpon
On Elite Leviathan
B
Ben A.
Verified Buyer
5.0 star rating
03/05/25
Been using this line for
Review by Ben A. on 5 Mar 2025 review stating Been using this line for
Been using this line for musky for the last 7 years. I have yet to find a better single hand casting line on the market. The addition of the welded loops on both ends is a huge bonus now.
On Elite Leviathan
P
Paul W.
Verified Buyer
5.0 star rating
11/09/24
My #1 Choice for Big
Review by Paul W. on 9 Nov 2024 review stating My #1 Choice for Big
My #1 Choice for Big Costa Rica Tarpon for the past 10 years
On Elite Leviathan