{"product_id":"channel-islands-upright-medium-tri-quad-surfboard-fins-1-tab","title":"Channel Islands Upright Medium Tri\/Quad Surfboard Fins 1 Tab","description":"\u003carticle\u003e\r\n  \u003cp\u003eThe Channel Islands CI Upright Tri-Quad Large Fin Set is built for surfers looking for quick acceleration, tight turns, and the versatility to switch between thruster and quad setups. Designed by Channel Islands around a more upright template, these fins favor fast transitions and responsive surfing while maintaining enough drive and control to push hard through turns.\u003c\/p\u003e\r\n\r\n  \u003ch2\u003eChannel Islands CI Upright Tri-Quad Large Fin Set\u003c\/h2\u003e\r\n  \u003cul\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Channel Islands\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e CI Upright Tri-Quad\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e Large\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eFin System:\u003c\/strong\u003e Futures\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eFin Setup:\u003c\/strong\u003e Tri-Quad \/ 5 Fin\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eRecommended Rider Weight:\u003c\/strong\u003e 165–200 lbs\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eItem Number:\u003c\/strong\u003e 119471\u003c\/li\u003e\r\n  \u003c\/ul\u003e\r\n\r\n  \u003ch2\u003eUpright Template for Quick Direction Changes\u003c\/h2\u003e\r\n  \u003cp\u003eThe CI Upright was developed to maintain response and turning performance on surfboards with flatter, more relaxed rocker. Its upright profile favors tighter turning arcs and quick transitions, making it a strong option for surfers who want to stay active in the pocket.\u003c\/p\u003e\r\n\r\n  \u003cp\u003eChannel Islands also points to the template's ability to generate quick start-up drive and acceleration while maintaining a loose, responsive feel off the top.\u003c\/p\u003e\r\n\r\n  \u003ch2\u003eThruster and Quad Versatility\u003c\/h2\u003e\r\n  \u003cp\u003eThe five-fin Tri-Quad set gives you two distinct setup options without needing separate fin sets. Run the three larger fins as a thruster when you want a familiar combination of control, precision, and release, or install the two side fins with the quad rears when you want the speed and hold of a quad setup.\u003c\/p\u003e\r\n\r\n  \u003ch2\u003eLarge CI Upright Fin Specifications\u003c\/h2\u003e\r\n\r\n  \u003ch3\u003eLarge Side and Center Fins\u003c\/h3\u003e\r\n  \u003cul\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eBase:\u003c\/strong\u003e 4.50\"\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 4.70\"\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eArea:\u003c\/strong\u003e 15.79 sq. in.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eSweep:\u003c\/strong\u003e 30.3°\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eFoil:\u003c\/strong\u003e Flat\u003c\/li\u003e\r\n  \u003c\/ul\u003e\r\n\r\n  \u003ch3\u003eLarge Quad Rear Fins\u003c\/h3\u003e\r\n  \u003cul\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eBase:\u003c\/strong\u003e 4.14\"\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 4.27\"\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eArea:\u003c\/strong\u003e 12.29 sq. in.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eSweep:\u003c\/strong\u003e 33.3°\u003c\/li\u003e\r\n  \u003c\/ul\u003e\r\n\r\n  \u003ch2\u003eWho Should Ride the Large CI Upright?\u003c\/h2\u003e\r\n  \u003cp\u003eChannel Islands recommends the Large size for surfers approximately 165 to 200 pounds. Rider weight is a useful starting point when choosing fins, but the best size can also depend on the surfboard, wave conditions, and how much hold or release you prefer.\u003c\/p\u003e\r\n\r\n  \u003ch2\u003eWhere the CI Upright Works\u003c\/h2\u003e\r\n  \u003cp\u003eThe upright template is particularly suited to surfing where fast transitions and tighter turns are important. Channel Islands highlights punchy, hollow waves and vertical surfing, while also recommending the design when immediate acceleration off the takeoff is useful.\u003c\/p\u003e\r\n\r\n  \u003cp\u003eThe template was originally developed as the Channel Islands range expanded further into hybrid and step-down surfboards with flatter rocker, but CI team riders have also used it on high-performance shortboards and step-ups when looking for reduced resistance and responsive pocket surfing.\u003c\/p\u003e\r\n\r\n  \u003ch2\u003eFutures Fin Compatibility\u003c\/h2\u003e\r\n  \u003cp\u003eThis Rider Shack inventory item is configured for the Futures fin system. Make sure your surfboard has compatible Futures single-tab fin boxes and a five-fin box configuration if you plan to alternate between thruster and quad setups.\u003c\/p\u003e\r\n\r\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\r\n\r\n  \u003ch3\u003eIs the CI Upright Tri-Quad a five-fin set?\u003c\/h3\u003e\r\n  \u003cp\u003eYes. The Tri-Quad configuration provides the fins needed to run either a thruster or quad setup.\u003c\/p\u003e\r\n\r\n  \u003ch3\u003eWhat size surfer is the Large CI Upright designed for?\u003c\/h3\u003e\r\n  \u003cp\u003eChannel Islands recommends the Large size for surfers approximately 165 to 200 pounds.\u003c\/p\u003e\r\n\r\n  \u003ch3\u003eWhat does an upright fin template do?\u003c\/h3\u003e\r\n  \u003cp\u003eThe CI Upright's reduced sweep promotes tighter turning arcs, quick direction changes, and responsive pocket surfing while its full profile provides enough area to push through turns.\u003c\/p\u003e\r\n\r\n  \u003ch3\u003eCan I ride these fins as a thruster?\u003c\/h3\u003e\r\n  \u003cp\u003eYes. The set is designed to provide both thruster and quad configurations.\u003c\/p\u003e\r\n\r\n  \u003ch3\u003eWhat fin system does this set fit?\u003c\/h3\u003e\r\n  \u003cp\u003eThis Rider Shack item is listed for Futures fin boxes.\u003c\/p\u003e\r\n\r\n  \u003ch2\u003eShop Surfboard Fins at Rider Shack\u003c\/h2\u003e\r\n  \u003cp\u003eBuying from Rider Shack supports a small, family-owned core surf shop operated by surfers who are passionate about sharing the love of surfing and the ocean. We're here to help surfers match their boards with fins and equipment that make sense for their surfing and the performance they're looking for.\u003c\/p\u003e\r\n\u003c\/article\u003e","brand":"Futures","offers":[{"title":"Large","offer_id":53946284671259,"sku":"119471","price":185.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.ridershack.com\/products\/channel-islands-upright-medium-tri-quad-surfboard-fins-1-tab","provider":"Rider Shack","version":"1.0","type":"link"}