Will this fin work in an old windsurfer that has a US box? What are dimensions of base that drops into the box or slot?

This fits in a standard US fin box that is about 10.5" long.

will this fit an inflatable aqua marine sk2?

No it does not, for the Aqua Marina SPK-2 you need the SBS 9" iSUP Fin here amazon.com/dp/B06XB4RQD1/

Will this fit an 8’ emotion crush stand up paddleboard?

It will fit any standard long center fin box. (What used to be called a "Bahne" or "Fins Unlimited" box.

Is the compatible with imagine surf paddle boards?

We have found the Imagine Icon needs our 7.5" fin instead of this one. We don't know about the other boards though.

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SBS 8" Center Fin for Longboard & SUP - Glass-Filled Nylon Surfboard Fin for Standard US Fin Box - Includes No-Tool Screw & Plate

Product ID: 19078055

Details

Brand
Santa Barbara
Color
Black with
Item Weight
0.25 kg
Material
Fiberglass
Sport
Surfing

🌊Universal fit for 8.5" & 10.5" fin boxes

🔧No-tool fin screw included

🦾Glass-filled nylon strength

€ 41.72

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌊 Ride the wave of precision and power—upgrade your board, upgrade your stoke!

BUILT TO LAST - Durable glass-filled nylon construction ensures your fin withstands every wave and paddle stroke.
EFFORTLESS UPGRADE - Direct replacement fin for most SUPs & longboards—get back on the water fast without hassle.
VERSATILE PERFORMANCE - Perfect for surfing, noseriding, and flatwater touring—your all-in-one fin for every water adventure.
TOOL FREE INSTALLATION - Includes no-tool fin screw and plate for quick, damage-free mounting—no extra gear needed.
UNIVERSAL COMPATIBILITY - Fits 99% of standard SUP and surfboard fin boxes, including popular brands like BIC and Tower.

The Santa Barbara Surfing 8" Longboard & SUP Single Fin is a robust, glass-filled nylon fin designed as a direct replacement for most standard 8.5" and 10.5" fin boxes. Compatible with a wide range of SUPs and longboards, it includes a no-tool fin screw and plate for easy installation. Ideal for surfing, noseriding, and flatwater touring, this fin delivers reliable hold and drive, making it a must-have upgrade for serious paddlers and surfers alike.

Specifications

ASIN	B0145KHIYG
Age Range Description	Adult
Best Sellers Rank	#93,622 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #16 in Surfing Fins
Brand	Santa Barbara Surfing
Brand Name	Santa Barbara Surfing
Color	Black with Logo
Customer Reviews	4.6 out of 5 stars 490 Reviews
Item Dimensions L x W	120"L x 48"W
Item Weight	0.25 kg
Manufacturer	Santa Barbara Surfing
Manufacturer Part Number	SBS-5104
Material	Glass Filled Nylon
Material Type	Glass Filled Nylon
Model Number	SBS-5104
Number of Items	1
Number of Packs	1
Operator Skill Level	All
Product Dimensions	120"L x 48"W
Shape	fin
Sport	Surfing
Sport Type	Surfing
UPC	029741495609
Unit Count	1 Count

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TrustScore 4.5 | 7,300+ reviews

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Received my product in pristine condition. Great service overall.

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€ 41.72

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cyprus.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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