Borst Surfboard 5’6 21L Caity Simmers (USED)

Only 1 left
Regular price $400.00

5'6" Taylor Knox Sea Wolf Surfboard – Shaped for Caity Simmers – Futures Thruster – 21L – Used

The 5'6" Taylor Knox Sea Wolf Model surfboard is a high-performance shortboard designed for speed, precision, and elite-level progression. Built in classic PU / Poly construction, this board delivers responsive flex, clean rail engagement, and dependable drive in critical sections.

Notably, this board was shaped for professional surfer Caity Simmers, making it a rare and highly desirable performance shape.


Board Specifications

  • Length: 5'6"

  • Width: 17.94"

  • Thickness: 2.12"

  • Volume: 21 Liters

  • Model: Taylor Knox Sea Wolf

  • Fin Setup: Futures 3 Fin (Thruster)

  • Construction: PU / Polyurethane

  • Condition: Used (See video for full details)


Performance & Design

At just 21 liters, this is a refined, low-volume performance shortboard intended for advanced surfers or lighter riders. The narrow 17.94" width and pulled-in outline allow for:

  • Lightning-fast rail-to-rail transitions

  • Maximum control in steep, powerful waves

  • Tight, vertical pocket surfing

  • High-speed performance maneuvers

The Futures thruster setup provides reliable hold, drive, and release — ideal for competitive-level surfing and progressive turns.


Ideal Wave Range

  • Chest-high to overhead surf

  • Punchy beach breaks

  • Steep, powerful waves

  • Advanced surfers seeking a pro-level feel


Used Surfboard – Rare Opportunity

This board is in used condition. Please review the video carefully for cosmetic wear and overall condition. Given its pro pedigree and performance design, this is a unique opportunity to own a board shaped for one of surfing’s top competitors.

All surfboards listed on our website undergo a comprehensive cleaning and detailed ding inspection process. Any surfboards with major dings are professionally repaired by experienced ding repairman, ensuring top-quality craftsmanship. We guarantee that each board is fully watertight and ready for an exceptional ride. For full transparency, photos and videos documenting any significant dings or repairs are available above, giving you complete peace of mind before your purchase. Shop with confidence knowing your board has been expertly inspected and prepped for performance. 

ALL Sales Final! There Will Be A $80 Re-Stocking Fee If You Decide To Cancel Your Order! 

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.

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