USED FIN
The FCS Soul Arch 8 fin is a classic, longboard-style single fin that provides a stable, predictable feel with an upright yet slightly raked outline. It is heavily celebrated by surfers for its low sweep, making it perfect for longboards, mid-lengths, and single-fin logs where you want controlled turns and fluid rail-to-rail transitions.
Key Specifications & Features
- Template: Full-bodied outline with low sweep (rake) for tight, controlled turning arcs.ย
- Sizes Available: The 8-inch model is ideal for mid-lengths and smaller logs, though they occasionally come in 9-inch models.ย
- Construction: Generally crafted in Performance Glass (PG), which delivers a stiff, highly responsive feel that maintains its integrity under immense force.
- System Compatibility: Fits standard longboard fin boxes. Some models utilize FCS II tool-less technology, letting you adjust or remove the fin in seconds without a fin key or screw plate.ย
Volume Reference Guide
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| Weight | Beginner | Intermediate | Advanced | Pro |
|---|---|---|---|---|
|
80 lbs
36 kg
|
23.9L | 19.9L | 16.75L | 15.9L |
|
85 lbs
38.25 kg
|
24.4L | 20.7L | 17.4L | 16.6L |
|
90 lbs
40.50 kg
|
25.7L | 21.5L | 18L | 17.20L |
|
95 lbs
42.75 kg
|
26.5L | 22.1L | 18.5L | 17.7L |
|
100 lbs
45 kg
|
27.2L | 22.6L | 19L | 18.2L |
|
110 lbs
49.5 kg
|
29.2L | 24.4L | 20.5L | 19.5L |
|
120 lbs
54 kg
|
31L | 25.9L | 21.8L | 20.7L |
|
130 lbs
58.5 kg
|
31.8L | 26.5L | 22.3L | 21.2L |
|
140 lbs
63 kg
|
33.3L | 27.8L | 23.3L | 22.2L |
|
145 lbs
65.25 kg
|
34.5L | 28.8L | 24.2L | 23L |
|
150 lbs
67.5 kg
|
35.7L | 29.8L | 25L | 23.8L |
|
155 lbs
69.75 kg
|
36.9L | 30.8L | 25.8L | 24.6L |
|
160 lbs
72 kg
|
38.1L | 31.9L | 26.7L | 25.4L |
|
165 lbs
74.25 kg
|
39.3L | 32.8L | 27.5L | 26.2L |
|
170 lbs
76.5 kg
|
40.5L | 33.7L | 28.3L | 27L |
|
175 lbs
78.75 kg
|
41.7L | 34.7L | 29.2L | 27.8L |
|
180 lbs
81 kg
|
42.9L | 35.7L | 30L | 28.6L |
|
185 lbs
83.25 kg
|
44L | 36.7L | 30.9L | 29.4L |
|
190 lbs
85.5 kg
|
45.2L | 37.7L | 31.7L | 30.2L |
|
195 lbs
87.75 kg
|
46.4L | 38.7L | 32.5L | 31L |
|
200 lbs
90 kg
|
47.6L | 39.7L | 33.4L | 31.8L |
|
210 lbs
94.5 kg
|
50L | 41.7L | 35L | 33.4L |
|
220 lbs
99 kg
|
53.9L | 44.9L | 37.7L | 36L |
|
230 lbs
103.5 kg
|
57.9L | 48.2L | 40.5L | 38.6L |
|
240 lbs
108 kg
|
62L | 51.7L | 43.5L | 41.4L |
|
250 lbs
114 kg
|
66.1L | 55.2L | 46.5L | 44.2L |
|
260 lbs
118 kg
|
70.2L | 58.7L | 49.5L | 47L |
|
270 lbs
123 kg
|
75L | 62.7L | 53L | 49.8L |
Volumes are a general starting guide. Your ideal volume can shift based on board outline, fitness, wave conditions, and personal preference. Still unsure? Contact us and we'll help you dial it in.