{"product_id":"scubapro-mk17-evo2-s620ti-regulator-system","title":"Scubapro MK17 EVO2\/S620Ti Regulator Set - REG459 YOKE","description":"\u003ch2\u003e\u003cspan\u003eScubapro MK17 EVO2\/S620Ti Regulator Set - REG459 YOKE\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eFor compact comfortable breathing performance in cold or silty water, the MK17 EVO 2\/S620 Ti regulator system simply can’t be beat. The new MK17 EVO 2 is a sealed diaphragm first stage with a dry chamber based on a twin spring layout and two HP ports at 15-degree angle to make hose routing easier. Small and lightweight, the S620 Ti delivers excellent performance providing effortless airflow under all dive conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eSealed balanced diaphragm design makes for the ultimate compact first stage for cold water or contaminated diving conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAir-balanced diaphragm delivers consistent and effortless airflow, regardless of depth, tank pressure, or breathing rate.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDry chamber is completely environmentally sealed with a dual diaphragm system that keeps out contaminated water. The rib is designed to enhance heat exchange, making the first stage cold water-proof.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eTwo opposing high-pressure ports positioned on a 15º angle allow the first stage to be positioned either up or down, plus provide an optimal hose\/transmitter layout.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eS620Ti second stage's air balanced valve smoothes out the inhalation effort at varying depths and supply pressures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eRugged reinforced technopolymer case and front cover with stainless steel frame looks good plus is able to withstand years of aggressive diving.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFull titanium barrel is rugged, anti-corrosion and lightweight for long-term reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLarge diaphragm fits inside a more compact second stage casing for maximum breathing sensitivity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eUser controls include an easy-grip diver-adjustable inhalation effort knob and Venturi-Initiated Vacuum Assist (VIVA) lever.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eExclusive compact Hi-Flow mouthpiece is mounted on an enlarged mouthpiece pipe to improve airflow as well as mouth comfort.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"rqgq7a\" data-start=\"28\" data-end=\"188\"\u003e\n\u003cstrong data-start=\"30\" data-end=\"84\"\u003ePremium cold-water regulator system (2026 edition)\u003c\/strong\u003e built for serious divers who demand top-tier breathing performance and reliability in all conditions.\u003c\/li\u003e\n\u003cli data-section-id=\"1bpvy78\" data-start=\"189\" data-end=\"380\"\u003e\n\u003cstrong data-start=\"191\" data-end=\"233\"\u003eMK17 EVO2 sealed diaphragm first stage\u003c\/strong\u003e protects internal components from sand, silt, and freezing water while delivering stable airflow at depth. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"itk50n\" data-start=\"381\" data-end=\"577\"\u003e\n\u003cstrong data-start=\"383\" data-end=\"431\"\u003eS620Ti second stage with titanium inlet tube\u003c\/strong\u003e ensures ultra-smooth, low-effort breathing with excellent sensitivity and long-term corrosion resistance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ql8n6j\" data-start=\"578\" data-end=\"761\"\u003e\n\u003cstrong data-start=\"580\" data-end=\"615\"\u003eConsistently effortless airflow\u003c\/strong\u003e thanks to air-balanced design, keeping inhalation smooth regardless of depth, tank pressure, or workload. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1k2ki9k\" data-start=\"762\" data-end=\"965\"\u003e\n\u003cstrong data-start=\"764\" data-end=\"830\"\u003eFully adjustable breathing controls (inhalation + VIVA switch)\u003c\/strong\u003e allow precise tuning for comfort, efficiency, and free-flow prevention in changing conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1jkei64\" data-start=\"966\" data-end=\"1141\"\u003e\n\u003cstrong data-start=\"968\" data-end=\"1015\"\u003eCompact, travel-friendly first stage design\u003c\/strong\u003e with optimized port layout for clean hose routing and technical-ready configurations. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1sdkuj5\" data-start=\"1142\" data-end=\"1287\" data-is-last-node=\"\"\u003e\n\u003cstrong data-start=\"1144\" data-end=\"1177\"\u003eIdeal all-round premium setup\u003c\/strong\u003e for cold-water, wreck, and advanced recreational diving where reliability and smooth performance matter most.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a46a1f1-8334-83e8-805a-22ca56842fac-0\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a46a1f1-8334-83e8-805a-22ca56842fac-0\" data-turn-id-container=\"request-6a46a1f1-8334-83e8-805a-22ca56842fac-0\" data-testid=\"conversation-turn-22\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"d8e8f5a6-37d5-4829-b441-b1683cbbc4ef\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"355\"\u003e\u003cstrong data-start=\"0\" data-end=\"73\"\u003eQ: What is the ScubaPro MK17 EVO2\/S620Ti Regulator Set (REG459 YOKE)?\u003c\/strong\u003e\u003cbr data-start=\"73\" data-end=\"76\"\u003eA: It is a premium all-condition scuba regulator system combining the MK17 EVO2 sealed balanced diaphragm first stage with the lightweight titanium S620Ti second stage, designed for cold water, travel, and recreational-to-technical diving. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"357\" data-end=\"647\"\u003e\u003cstrong data-start=\"357\" data-end=\"419\"\u003eQ: Is the MK17 EVO2\/S620Ti suitable for cold water diving?\u003c\/strong\u003e\u003cbr data-start=\"419\" data-end=\"422\"\u003eA: Yes. The MK17 EVO2 is fully environmentally sealed with a dry chamber that prevents freezing and contamination, making it highly reliable in cold, silty, or challenging environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"649\" data-end=\"930\"\u003e\u003cstrong data-start=\"649\" data-end=\"687\"\u003eQ: How does it perform underwater?\u003c\/strong\u003e\u003cbr data-start=\"687\" data-end=\"690\"\u003eA: The air-balanced diaphragm first stage and S620Ti second stage deliver smooth, effortless airflow regardless of depth or tank pressure, with reduced breathing resistance for consistent performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"932\" data-end=\"1187\"\u003e\u003cstrong data-start=\"932\" data-end=\"985\"\u003eQ: What comfort features does the S620Ti include?\u003c\/strong\u003e\u003cbr data-start=\"985\" data-end=\"988\"\u003eA: It features diver-adjustable inhalation effort control, Venturi (VIVA) switch, and a compact high-flow design that improves comfort and reduces jaw fatigue. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1189\" data-end=\"1382\"\u003e\u003cstrong data-start=\"1189\" data-end=\"1237\"\u003eQ: What does the YOKE (INT) connection mean?\u003c\/strong\u003e\u003cbr data-start=\"1237\" data-end=\"1240\"\u003eA: The YOKE fitting attaches to standard scuba tank valves, making it widely compatible for recreational diving and rental or travel setups.\u003c\/p\u003e\n\u003cp data-start=\"1384\" data-end=\"1652\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1384\" data-end=\"1429\"\u003eQ: Who is this regulator best suited for?\u003c\/strong\u003e\u003cbr data-start=\"1429\" data-end=\"1432\"\u003eA: It is ideal for advanced recreational and cold-water divers who want a lightweight, durable, and high-performance regulator system with excellent breathing ease in all conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a45414b-949c-83ee-8c89-696580635844-7\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a45414b-949c-83ee-8c89-696580635844-7\" data-turn-id-container=\"request-6a45414b-949c-83ee-8c89-696580635844-7\" data-testid=\"conversation-turn-158\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"bdb89672-c850-45c0-925e-52cf5c2a3ce4\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cul data-start=\"22\" data-end=\"1282\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"a3q8vo\" data-start=\"22\" data-end=\"268\"\u003eRinse the regulator system thoroughly with fresh water after every dive, ideally while still pressurized. If disconnected, ensure the DIN dust cap is securely fitted before rinsing to prevent water entry. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"di7jx3\" data-start=\"269\" data-end=\"449\"\u003eAllow all components (MK17 EVO2 first stage, S620Ti second stage, hoses) to air dry completely in a cool, shaded place before storage to prevent corrosion and moisture buildup.\u003c\/li\u003e\n\u003cli data-section-id=\"3n6mj7\" data-start=\"450\" data-end=\"611\"\u003eInspect the first stage, hoses, DIN connection, O-rings, mouthpiece, purge button, and adjustment knobs before each dive for signs of wear, leaks, or damage.\u003c\/li\u003e\n\u003cli data-section-id=\"14oynr4\" data-start=\"612\" data-end=\"794\"\u003eKeep the sealed diaphragm first stage clean and free from sand or debris to maintain reliable performance in cold or silty water conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"tts573\" data-start=\"795\" data-end=\"928\"\u003eTest the inhalation adjustment knob and VIVA lever regularly to ensure smooth operation and proper airflow control before diving.\u003c\/li\u003e\n\u003cli data-section-id=\"g0jhdl\" data-start=\"929\" data-end=\"1076\"\u003eStore the regulator in a padded gear bag with hoses loosely coiled, away from direct sunlight, heat, chemicals, and heavy pressure on fittings.\u003c\/li\u003e\n\u003cli data-section-id=\"7j674x\" data-start=\"1077\" data-end=\"1282\" data-is-last-node=\"\"\u003eHave the MK17 EVO2\/S620Ti system professionally serviced at manufacturer-recommended intervals (typically every 100 dives or 2 years) by an authorized SCUBAPRO technician for safe, long-term performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Scubapro","offers":[{"title":"YOKE","offer_id":45807396421823,"sku":"REG459 YOKE","price":824.99,"currency_code":"USD","in_stock":true},{"title":"DIN","offer_id":45807396454591,"sku":"REG459 DIN","price":824.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/SP_12170000_MK17_EVO2_S620Ti_INT_f6dd4a43-c5fc-4bc8-a2da-0a3eb70a8638.webp?v=1783016811","url":"https:\/\/www.mybackyardzone.com\/products\/scubapro-mk17-evo2-s620ti-regulator-system","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}