{"product_id":"flying-diamonds-fdx1-tri-quad-futures-fins-hawaii","title":"Flying Diamonds FDX1 Tri Quad Fin Set (Med-Large)","description":"\u003ch2\u003e\u003cstrong\u003eFDX1 Tri-Quad Fin Set — 5 Fins\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe FDX1 Tri-Quad is a five-fin set that covers two complete configurations in a single package. Run it as a quad using the four side fins, or as a thruster using the center fin and the two front side fins. Both setups use the same FDX1 template: a neutral, balanced geometry designed by Flying Diamonds to serve as a performance baseline across your quiver.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFive-fin set — one purchase covers both a full thruster and a full quad configuration, no additional fins needed\u003c\/li\u003e\n\u003cli\u003eNeutral, balanced FDX1 template — not overly upright or raked, built to function as a quiver-wide performance reference point\u003c\/li\u003e\n\u003cli\u003eAirFlex construction — polyurethane foam air core with high-strength fiberglass and epoxy resin shell, delivering the lightest possible weight with optimal rebound under load\u003c\/li\u003e\n\u003cli\u003eBalances speed, flow, and response in both thruster and quad configurations — Flying Diamonds' stated performance priorities\u003c\/li\u003e\n\u003cli\u003eAvailable in Medium (Black Multi-Tone) and Large (Gray Multi-Tone); compatible with FCS II (Dual Tab 2) and Futures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTwo Setups, One Package\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThruster Setup\u003c\/strong\u003e\u003cbr\u003eCenter fin + two front side fins — the same three-fin combination as the FDX1 Tri Fin Set. Standard thruster performance: balanced drive, pivot, and control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuad Setup\u003c\/strong\u003e\u003cbr\u003eAll four side fins, no center fin. The rear quad side fins are included exclusively in this five-fin set — they are not part of the Thruster set. Switching between setups requires no additional purchases; everything you need is in the box.\u003c\/p\u003e\n\u003ch3\u003eAirFlex Construction\u003c\/h3\u003e\n\u003cp\u003eAirFlex starts with a precision-shaped polyurethane foam core — an air-core interior that removes excess weight while holding the fin's shape and structural integrity. This core is wrapped in high-strength fiberglass and laminated with epoxy resin, producing a durable outer shell.\u003c\/p\u003e\n\u003cp\u003eAccording to Flying Diamonds, this build delivers a balanced, predictable flex pattern with quick response and smooth feedback under load. The fins feel lively and responsive through turns, while remaining stable and controlled when conditions demand it. The construction is designed to perform consistently across a wide range of conditions with every board you ride.\u003c\/p\u003e\n\u003ch3\u003eFin Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFin \/ Size\u003c\/th\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003cth\u003eBase\u003c\/th\u003e\n\u003cth\u003eRake\u003c\/th\u003e\n\u003cth\u003eArea\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCenter – Medium\u003c\/td\u003e\n\u003ctd\u003e4.36\"\u003c\/td\u003e\n\u003ctd\u003e4.47\"\u003c\/td\u003e\n\u003ctd\u003e7.21\"\u003c\/td\u003e\n\u003ctd\u003e16.85\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCenter – Large\u003c\/td\u003e\n\u003ctd\u003e4.51\"\u003c\/td\u003e\n\u003ctd\u003e4.46\"\u003c\/td\u003e\n\u003ctd\u003e7.29\"\u003c\/td\u003e\n\u003ctd\u003e17.94\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Side (Tri) – Medium\u003c\/td\u003e\n\u003ctd\u003e4.56\"\u003c\/td\u003e\n\u003ctd\u003e4.46\"\u003c\/td\u003e\n\u003ctd\u003e7.13\"\u003c\/td\u003e\n\u003ctd\u003e17.88\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Side (Tri) – Large\u003c\/td\u003e\n\u003ctd\u003e4.75\"\u003c\/td\u003e\n\u003ctd\u003e4.56\"\u003c\/td\u003e\n\u003ctd\u003e7.33\"\u003c\/td\u003e\n\u003ctd\u003e19.18\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Quad Side – Medium*\u003c\/td\u003e\n\u003ctd\u003e4.24\"\u003c\/td\u003e\n\u003ctd\u003e4.46\"\u003c\/td\u003e\n\u003ctd\u003e7.08\"\u003c\/td\u003e\n\u003ctd\u003e16.24\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Quad Side – Large*\u003c\/td\u003e\n\u003ctd\u003e4.50\"\u003c\/td\u003e\n\u003ctd\u003e4.50\"\u003c\/td\u003e\n\u003ctd\u003e7.34\"\u003c\/td\u003e\n\u003ctd\u003e17.78\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eAll measurements as published by Flying Diamonds of California. *Rear Quad Side fins are exclusive to this five-fin set.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFin Box System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFCS II (Dual Tab 2) — Medium (Black Multi-Tone) and Large (Gray Multi-Tone)\u003c\/li\u003e\n\u003cli\u003eFutures — Medium and Large; confirm current stock at time of purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBoard Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eShortboards and mid-lengths with five-fin boxes — allows switching between thruster and quad on the same board\u003c\/li\u003e\n\u003cli\u003eWorks across separate boards: thruster on one, quad on another — same fins, same construction throughout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThis Fin Set Is Right for You If…\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYou ride a five-fin board and want the flexibility to switch between thruster and quad setups without buying two separate sets of fins\u003c\/li\u003e\n\u003cli\u003eYou want to experiment with both configurations using identical construction — so any performance difference you feel comes from the setup, not the fins\u003c\/li\u003e\n\u003cli\u003eYou prefer a neutral, all-around template over a specialist fin built for a specific wave type\u003c\/li\u003e\n\u003cli\u003eYou ride FCS II or Futures boxes and want a single versatile set that covers both configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy the FDX1 Tri-Quad\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTwo complete fin setups in one purchase — thruster and quad, same template, same construction, no compromises\u003c\/li\u003e\n\u003cli\u003eAirFlex construction is consistent across all five fins — the flex and rebound characteristics are identical whether you run three or four\u003c\/li\u003e\n\u003cli\u003eNeutral FDX1 template works as a quiver anchor: a reliable performance baseline across different boards and conditions\u003c\/li\u003e\n\u003cli\u003eAvailable in FCS II and Futures — the two most common fin box standards in shortboards and mid-lengths\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable at Hawaiian South Shore\u003c\/h3\u003e\n\u003cp\u003eHonolulu's premier surf boutique since 1996. Hawaii's largest Firewire retailer and exclusive Oahu dealer for the sport's most respected brands.\u003c\/p\u003e\n\u003cp\u003e📍 320 Ward Avenue #112, Honolulu, HI 96814\u003cbr\u003e📞 (808) 597-9055\u003cbr\u003e✉️ sales@hawaiiansouthshore.com\u003c\/p\u003e","brand":"FLYING DIAMONDS","offers":[{"title":"Medium - Black - Futures","offer_id":52136666759480,"sku":"148006","price":170.0,"currency_code":"USD","in_stock":false},{"title":"Medium - Black - FCS II","offer_id":52141599621432,"sku":"148008","price":170.0,"currency_code":"USD","in_stock":true},{"title":"Large - Grey - FCS II","offer_id":52141599654200,"sku":"148009","price":170.0,"currency_code":"USD","in_stock":true},{"title":"Large - Grey - Futures","offer_id":52141599686968,"sku":"148007","price":170.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0273\/2579\/2290\/files\/flying-diamonds-fdx1-tri-quad-fin-set-med-large-shop-surf-acc-1142839.jpg?v=1775808383","url":"https:\/\/www.hawaiiansouthshore.com\/products\/flying-diamonds-fdx1-tri-quad-futures-fins-hawaii","provider":"Hawaiian South Shore","version":"1.0","type":"link"}