{"product_id":"stumpjumper-15-alloy-frameset-fox-float-genie-performance","title":"Stumpjumper 15 Alloy Frameset - FOX FLOAT GENIE Performance","description":"The Stumpjumper 15 Alloy is designed to eliminate trade-offs in trail riding. It delivers the bump-absorbing capability of a larger travel bike while maintaining short-travel control, playfulness, and climbing efficiency. The bike offers extensive personalization options to tailor the ride to individual preferences.\n\nThe centerpiece of this frameset is GENIE, Specialized's patent-pending air spring technology. GENIE combines the linear spring rate of a coil spring through the bump zone with the progressive spring rate of an air spring at the end of the stroke. This dual-stage design provides maximum grip and traction comparable to a coil spring, superior bottom-out prevention compared to standard air springs, and the ability to independently tune mid-stroke and end-stroke support.\n\nPerformance testing demonstrates that GENIE delivers measurably better traction than the previous Stumpjumper EVO. The shock manages bump forces 16.3% better than traditional air-sprung shocks, allowing the 145mm rear travel Stumpjumper 15 Alloy to absorb impacts comparable to longer-travel bikes. Field testing shows 57% better traction than standard air-sprung shocks and 39% fewer bottom-outs due to the pronounced rising rate in the final 30% of the stroke.\n\nThe geometry is engineered for versatility, delivering big bike capability on rough terrain while maintaining nimbleness in tight sections and efficient climbing characteristics. The generous cockpit centers the rider for optimized traction and corner control. A low bottom bracket, slack head tube angle, and optimized fork offset provide stability in rough conditions.\n\nThe frameset features six distinct geometry settings for personalization, allowing fine-tuning of head angle and bottom bracket height for stability or clearance. Wheel configuration is also adjustable—riders can run 29\" wheels front and rear or mix a 27.5\" rear for a more responsive and playful ride without affecting geometry. The frame integrates SWAT internal downtube storage and features an M5 alloy construction with sealed cartridge bearing pivots.\n\n\u003cdiv data-section-type=\"features-triple\" data-theme=\"white\" data-text-align=\"left\"\u003e\r\n\u003cdiv data-section-type=\"feature\"\u003e\r\n\u003ch3\u003eGENIE Grants Every Trail Rider’s Wishes\u003c\/h3\u003e\r\n\u003cp\u003eThis game-changing, patent-pending air spring technology that we invented grants every trail rider three wishes: feel and control of a coil spring, better bottom-out prevention than a standard air spring, and a tunable “platform” for a playful feel.\u003c\/p\u003e\r\n\u003cimg src=\"https:\/\/assets.specialized.com\/i\/specialized\/MTB-4003_Stumpjumper-15_W-GENIE_Article-Component_02_IMG-01_1?fmt=auto\u0026amp;w=1200\u0026amp;q=80\" alt=\"GENIE Grants Every Trail Rider’s Wishes\" style=\"width:100%;height:auto;\"\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv data-section-type=\"feature\"\u003e\r\n\u003ch3\u003eWhat’s Inside GENIE?\u003c\/h3\u003e\r\n\u003cp\u003eCheck out how GENIE combines the control-enhancing linear spring rate of a coil spring through the “bump zone” with the progressive spring rate of an air spring at the end of the stroke to reduce bottom-outs. It's the best of both worlds – coil and air – with extra tuneability. Say goodbye to compromises and hello to the future of riding.\u003c\/p\u003e\r\n\u003cimg src=\"https:\/\/assets.specialized.com\/i\/specialized\/MTB-4003_Stumpjumper-15_W-GENIE_Article-Component_02_IMG-02_1?fmt=auto\u0026amp;w=1200\u0026amp;q=80\" alt=\"What’s Inside GENIE?\" style=\"width:100%;height:auto;\"\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv data-section-type=\"feature\"\u003e\r\n\u003ch3\u003eUnlock Your Ride with Tunable Geo\u003c\/h3\u003e\r\n\u003cp\u003eStumpjumper 15 boasts the planet's most capable trail geometry. With six-way adjustability, tailor your ride to perfectly match your style and terrain. Explore our interactive Geo Finder to pinpoint your ideal setting.\u003c\/p\u003e\r\n\u003cimg src=\"https:\/\/assets.specialized.com\/i\/specialized\/MTB-4003_Stumpjumper-15_W-GENIE_Article-Component_02_IMG-03_1?fmt=auto\u0026amp;w=1200\u0026amp;q=80\" alt=\"Unlock Your Ride with Tunable Geo\" style=\"width:100%;height:auto;\"\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\r\n\u003cdiv data-section-type=\"features-triple\" data-theme=\"white\" data-text-align=\"left\"\u003e\r\n\u003cdiv data-section-type=\"feature\"\u003e\r\n\u003ch3\u003eEats Bumps Like an Enduro\u003c\/h3\u003e\r\n\u003cp\u003eGENIE shock technology gives the Stumpy 15 16.3% better bump performance than ‘Bike of the Year’ Stumpjumper EVO.  It literally uses more travel for the same size bump, thanks to its flatter spring curve in the first 70% of travel.\u003c\/p\u003e\r\n\u003cimg src=\"https:\/\/assets.specialized.com\/i\/specialized\/MTB-4003_Stumpjumper-15_W-GENIE_Article-Component_03_IMG-01_1?fmt=auto\u0026amp;w=1200\u0026amp;q=80\" alt=\"Eats Bumps Like an Enduro\" style=\"width:100%;height:auto;\"\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv data-section-type=\"feature\"\u003e\r\n\u003ch3\u003e57% Better Traction\u003c\/h3\u003e\r\n\u003cp\u003eGENIE delivers 57% less traction loss time than a standard air-sprung shock because GENIE technology gives you supple, coil-like performance, which keeps the wheel in contact with the ground a greater percent of the time than a typical air spring would.\u003c\/p\u003e\r\n\u003cimg src=\"https:\/\/assets.specialized.com\/i\/specialized\/MTB-4003_Stumpjumper-15_W-GENIE_Article-Component_03_IMG-02_1?fmt=auto\u0026amp;w=1200\u0026amp;q=80\" alt=\"57% Better Traction\" style=\"width:100%;height:auto;\"\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv data-section-type=\"feature\"\u003e\r\n\u003ch3\u003eBye, Bye, Bottom Outs\u003c\/h3\u003e\r\n\u003cp\u003eSend it with confidence knowing that in field testing GENIE eliminated 39% of severe bottom out events compared to a standard FOX Float air spring.\u003c\/p\u003e\r\n\u003cimg src=\"https:\/\/assets.specialized.com\/i\/specialized\/MTB-4003_Stumpjumper-15_W-GENIE_Article-Component_03_IMG-03_1?fmt=auto\u0026amp;w=1200\u0026amp;q=80\" alt=\"Bye, Bye, Bottom Outs\" style=\"width:100%;height:auto;\"\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\r\n\u003cdiv data-section-type=\"features-triple\" data-theme=\"white\" data-text-align=\"left\"\u003e\r\n\u003cdiv data-section-type=\"feature\"\u003e\r\n\u003ch3\u003eMeet the Creators\u003c\/h3\u003e\r\n\u003cp\u003eMany (dirty) hands, one (awesome) bike. Over 50 R\u0026amp;D teammates, each and every one a trail rider, worked for more than three years to make Stumpjumper 15 One Bike to Rule All Trails.\u003c\/p\u003e\r\n\u003cimg src=\"https:\/\/assets.specialized.com\/i\/specialized\/MTB-4003_Stumpjumper-15_W-GENIE_Article-Component_04_IMG-01_1?fmt=auto\u0026amp;w=1200\u0026amp;q=80\" alt=\"Meet the Creators\" style=\"width:100%;height:auto;\"\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv data-section-type=\"feature\"\u003e\r\n\u003ch3\u003eAll You Need to Know\u003c\/h3\u003e\r\n\u003cp\u003eDon’t like to read? No problem. Check out this short video and learn of all the highlights about the Stumpjumper 15.\u003c\/p\u003e\r\n\u003cimg src=\"https:\/\/assets.specialized.com\/i\/specialized\/MTB-4003_Stumpjumper-15_W-GENIE_Article-Component_04_IMG-02_1?fmt=auto\u0026amp;w=1200\u0026amp;q=80\" alt=\"All You Need to Know\" style=\"width:100%;height:auto;\"\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Specialized","offers":[{"title":"S1","offer_id":52210352226599,"sku":"73325-7001","price":1699.99,"currency_code":"USD","in_stock":true},{"title":"S2","offer_id":52210352259367,"sku":"73325-7002","price":1699.99,"currency_code":"USD","in_stock":false},{"title":"S3","offer_id":52210352292135,"sku":"73325-7003","price":2099.99,"currency_code":"USD","in_stock":false},{"title":"S4","offer_id":52210352324903,"sku":"73325-7004","price":2099.99,"currency_code":"USD","in_stock":false},{"title":"S5","offer_id":52210352357671,"sku":"73325-7005","price":2099.99,"currency_code":"USD","in_stock":false},{"title":"S6","offer_id":52210352390439,"sku":"73325-7006","price":1699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/6073\/8599\/files\/c579314722ff97e70a31d410eaa86723b858793e-optimized-1200-676.webp?v=1790885151","url":"https:\/\/spiritedcyclist.com\/products\/stumpjumper-15-alloy-frameset-fox-float-genie-performance","provider":"Spirited Cyclist","version":"1.0","type":"link"}