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World’s Largest Surfboard Selection!
The Rainbow Fin Company TK Flex 7.5 Longboard Fin was originally designed to ride as a single fin on small spoon boards in the 70's. With the advent of the tri fin longboard smaller versions were introduced to add extra snap on turns. Since this fin has reduced area above the base it is not a beginner fin because it loose and responsive.
Free Shipping Orders over $49
• FREE U.S. Domestic Shipping
• FREE Canada (orders $84 - $175)
*Excludes Surfboards, Bodyboards, Skateboards, Skimboards, Indo Boards, Board Bags and larger sized items.
Orders under $49:
• $9.99 East Coast
• $12.99 West Coast
• $15 Hawaii & Alaska
• $19.99 Canada
• All International Orders require a custom quote. Please contact us
• We offer Free Returns on purchases of $100 or more! Orders under $100 will need to provide their own return label.
• Certain items are Non-Returnable. These include: Bikini Bottoms & One-Piece Swimsuits, Used Surfboards, Gift Cards and Sale Items.
• When making a return, please include your Order# in your box and send the package to:
The Surf Station | Attention: Returns
1020 Anastasia Blvd.
St. Augustine, FL 32080
When will my order ship?
• Please allow 2-4 business days for processing before your order ships. We will provide you with an email once your order ships with a tracking number.
Do you offer expedited shipping?
• Yes, we do offer expedited services including Overnight, 2-Day, and more. Please email: [email protected]for a quote. Expedited orders placed after 3pm will be shipped the following business day.
Do you offer in-store pickup?
Yes. Please allow 24 hours to process and pull selected items. All items should be picked up at the main location, unless otherwise arranged with the online shipping department.
| FCS Fin Size Chart | Fin Size |
| Under 120lbs | XS |
| 140 - 155lbs | M |
| 165 - 200lbs | L |
| 190lbs+ | XL |
| Futures Fin Size Chart | Fin Size |
| 75 - 115lbs | XS |
| 105 - 155lbs | S |
| 145 - 195lbs | M |
| 180lbs+ | L |
| Longboard Fin Size Chart | |
| Board Size | Fin Size |
| 6' - 6'11" | 6" +/- |
| 7' - 7'11" | 7" +/- |
| 8' - 8'11" | 8" +/- |
| 9' & up | 9" +/- |