Delivery: tracked fast couriers. Local pickup possible.
The Summer vibes Quad Keel 4-Fin Set – FCSii Compatible (Blue) is built for surfers who want maximum speed, bite and hold without losing that smooth, flowing twin-keel feel. With a 5-inch front keel and a 3-inch quad rear trailer, this set creates the perfect blend of drive, control and playful release—ideal for fish shapes, hybrids and modern quad boards in fun Aussie waves.
Designed with premium fibreglass construction for stiffness, durability and predictable flex, these fins slot cleanly into FCSii-style fin boxes. The result is a rock-solid fit, excellent power transfer, and a fast, responsive feel under your feet.
This quad keel set adds a huge boost to speed and grip, making it an epic upgrade for Summer vibes Fish softboards that run FCSii Compatible fin systems. Expect better hold through turns, more projection down the line, and a lively, confidence-inspiring feel in small-to-medium waves.
Summer vibes hardware is shaped for real Australian surf conditions—fast, durable and designed to level-up your sessions. Whether you're carving beachies, racing down points or pushing your quad setup to its limits, these fins deliver reliable speed, hold and flow.
Summer vibes is an independent, Aussie-owned and surfer-run brand committed to performance, quality and purpose-built products. Every product in our store is created to help make your time at the beach better, easier and more fun. Feel good supporting a small business in your community that makes it all possible.
Designed & developed on the Gold Coast, QLD.
Ships Australia-wide from the Gold Coast. See delivery rates by state.
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The right gear, a clear fit and a real person to help.
Match the fin base to your board’s fin boxes and the set to its intended setup: twin, thruster, quad, single or 2+1. Check the compatibility and rider-size information for this exact set; not every fin fits every system.
Unsure? Send us a photo of your fin boxes and your board model before buying.
Check the product title and inclusions for the number of fins and the intended setup: twin, thruster, quad, single or 2+1. Confirm any screws, key or adapters in the inclusions—do not assume every set includes them.
Summer vibes hardware has a 12-month guarantee against manufacturing defects from the date of purchase, for the original purchaser with proof of purchase. Normal wear, accidental damage and misuse are not manufacturing defects.
See the warranty and returns policy for your category’s terms and exclusions. If you need help, contact us with your order details and clear photos. This cover is in addition to your Australian Consumer Law rights.
Enter your delivery address at checkout to see available services, the final shipping cost and any eligible free-delivery offer before paying. Options depend on the item and destination.
Summer vibes is an independent, Australian-owned surf business run by Branchy. He designs and tests Summer vibes boards and hardware in Gold Coast surf conditions, and helps customers choose their gear personally. We also stock selected products from other brands.
We’re based at Snapper Rocks on the Gold Coast. Eligible order pickup is from our fulfilment warehouse at GC3PL, 14 Hawker Street, Currumbin Waters.
We don’t currently have a walk-in shop, although many stores nationwide stock our gear.
Choose pickup at checkout when offered, then wait for collection confirmation. Contact us to confirm warehouse hours before travelling.
Our boards and hardware are designed and tested on the Gold Coast. We partner with experienced, family-owned manufacturers—specialists in their respective fields, with more than 20 years of surfboard and accessory manufacturing expertise.
Already ordered? Visit order help and FAQs for tracking and confirmation-email questions.
Real people on the Gold Coast. Ask us anything about boards, sizing or your order.
