A collaboration with Channel Islands Surfboards, the CI Upright is designed for speed and tight turns. A template that comes to life in punchy hollow waves, but can also suit conditions where you need the start up speed to get going. Ideal conditions for this fin set up is hollow steep waves and punchy beach breaks. Designed for Performance boards with deep concaves and moderate-to-extreme rocker.
Fin Size Detail
| Size | Area | Depth | Base | Sweep | Foil |
| Medium | 4.39" | 4.59" | 15.04"² | 30.3° | Flat |
| Large | 4.5" | 4.7" | 15.79"² | 30.3° | 50/50 |
Product Info
Cleanline Staff Dexter Says:
“The Channel Islands Upright Thruster Fins work great for small summer waves. They have a wide base and are not so raked out, which helps to generate speed when the ocean is weaker than usual. The upright fins stand out from other reactor-type fins. I like that the middle fin is a little smaller than the two side fins giving you great release when turning or carving to generate speed. I recommend pairing the Channel Islands Upright Fins with any groveler-type board with a flatter rocker and broader shape, such as the Channel Islands Rocket Wide or Sharp Eye Modern 2 or 2.5. I’m currently using the CI Upright Fins in my Sharp Eye Modern 2.5.”
Cleanline Staff
A collaboration with Channel Islands Surfboards, the CI Upright is designed for speed and tight turns. A template that comes to life in punchy hollow waves, but can also suit conditions where you need the start up speed to get going. Ideal conditions for this fin set up is hollow steep waves and punchy beach breaks. Designed for Performance boards with deep concaves and moderate-to-extreme rocker.
Fin Size Detail
| Size | Area | Depth | Base | Sweep | Foil |
| Medium | 4.39" | 4.59" | 15.04"² | 30.3° | Flat |
| Large | 4.5" | 4.7" | 15.79"² | 30.3° | 50/50 |
Product Details
- Size: Medium / Large
- Fins in Set: Three
- Construction: Performance Core
- Fin Type: FCS II Fin System
Performance Core
Performance Core (PC) fins are made using a multi-layered resin transfer molding process. The flex pattern in PC fins extends progressively from the base through to the tip, helping the surfer to maintain drive and hold through a turn. This versatile fin Construction is light, and can be used in a variety of different conditions.
Shipping Holiday Deadlines
Please see our Holiday Shipping Page for details on what shipping option to select to receive your order before December 25th.
Warranty
This product is backed by a warranty from the manufacturer. Click below for details on the warranty policy for FCS II products.
Returns
If you are not 100% satisfied with your purchase you may return it for a refund, or exchange within 30 days of receiving your order.
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