{"product_id":"kinugawa-turbo-big-head-adjustable-wastegate-actuator-single-dual-port-2-in-1-universal-fit-with-rod-kit","title":"Kinugawa Turbo Big Head Adjustable Wastegate Actuator — Single \u0026 Dual Port 2-in-1, Universal Fit with Rod Kit","description":"\u003ch2\u003eKinugawa Turbo Big Head Adjustable Wastegate Actuator — Single \u0026amp; Dual Port 2-in-1, Universal Fit with Full Rod Kit\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eKinugawa Big Head Adjustable Wastegate Actuator\u003c\/strong\u003e is a universal, bolt-on internal wastegate upgrade designed for turbocharged performance builds that demand precise, repeatable boost control. Under high boost, the factory actuator's weak diaphragm spring allows the wastegate to blow open prematurely — robbing mid-range torque and capping peak power. Bleed orifices compound the problem. Kinugawa's enlarged diaphragm head and precision-wound spring hold the wastegate closed longer, delivering quicker spool, sharper throttle response, and sustained peak boost for superior acceleration and mid-range pulling power.\u003c\/p\u003e\n\n\u003cp\u003eThis kit ships with a \u003cstrong\u003e15 PSI spring pre-fitted\u003c\/strong\u003e on the actuator head, plus a full set of 6 additional springs and 4 straight rods in multiple lengths — giving you everything needed to dial in the exact boost pressure and rod geometry for your application. The \u003cstrong\u003e2-in-1 integrated design\u003c\/strong\u003e supports both single-port and dual-port wastegate configurations without modification.\u003c\/p\u003e\n\n\u003ch3\u003eKey Performance Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEnlarged diaphragm area increases spring pressure and wastegate hold force\u003c\/li\u003e\n  \u003cli\u003eKeeps the wastegate valve seated longer — higher peak boost achieved sooner\u003c\/li\u003e\n  \u003cli\u003eProduces strong torque from idle through the full RPM range\u003c\/li\u003e\n  \u003cli\u003eCrisp, controlled boost response — eliminates boost creep and mid-range sag\u003c\/li\u003e\n  \u003cli\u003e2-in-1 integrated spring: single and dual port exchangeable in one unit\u003c\/li\u003e\n  \u003cli\u003eMultiple rod lengths included for universal fitment flexibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSingle Port vs. Dual Port — What’s the Difference?\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eSingle Port Actuators\u003c\/strong\u003e\u003cbr\u003e\nBoost reference is supplied to one side of the diaphragm. The wastegate opens in one direction; spring pressure alone handles the return stroke and holds the wastegate closed. Best suited for basic boost control via a manual boost controller (MBC) or electronic boost controller (EBC). Simple plumbing, straightforward setup — ideal for street and mild performance builds.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDual Port Actuators\u003c\/strong\u003e\u003cbr\u003e\nBoost reference is supplied to both sides of the diaphragm, enabling bidirectional control of the wastegate — both opening and closing. Spring pressure is pneumatically assisted on the return stroke, allowing a softer spring to achieve the same or higher boost targets with greater precision. Recommended for high-boost applications, high exhaust backpressure environments, or oversized wastegates. Best used with an EBC for maximum tunability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eTech Tip: Dual port actuators can also be run as a traditional single port — simply leave the lower actuator port vented to atmosphere. This makes the Kinugawa 2-in-1 design a future-proof choice for any build.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eApplication \u0026amp; Rod Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle and dual port exchangeable — 2-in-1 integrated spring pressure\u003c\/li\u003e\n  \u003cli\u003eIntegrated spring ratings: 3 PSI inner \/ 7 PSI inner \/ 7 PSI middle \/ 11 PSI middle \/ 10 PSI outer \/ 7 PSI outer\u003c\/li\u003e\n  \u003cli\u003eRod lengths included: \u003cstrong\u003e130 mm, 150 mm, 165 mm, and 180 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eEnd fitting hole diameter: 6.3 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2614\/6270\/files\/Big_Head_Actuator_ce457495-8a75-4426-8e47-c8e0e1ed906f.png?v=1726041505\" alt=\"Kinugawa Big Head Adjustable Wastegate Actuator — Rod Length Specifications and Application Diagram\"\u003e\n\n\u003ch3\u003eKit Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Kinugawa Big Head Dual Port Adjustable Actuator Head (15 PSI spring pre-fitted)\u003c\/li\u003e\n  \u003cli\u003e6 × Springs (assorted pressure ratings)\u003c\/li\u003e\n  \u003cli\u003e4 × Straight rods (130 mm, 150 mm, 165 mm, 180 mm)\u003c\/li\u003e\n  \u003cli\u003e1 × End fitting (hole diameter: 6.3 mm)\u003c\/li\u003e\n  \u003cli\u003e2 × Nuts for bracket connection\u003c\/li\u003e\n  \u003cli\u003e1 × Nut for rod\u003c\/li\u003e\n  \u003cli\u003e1 × Dual port block fitting\u003c\/li\u003e\n  \u003cli\u003e1 × Vice tool\u003c\/li\u003e\n  \u003cli\u003e1 × Installation instruction sheet (\u003ca href=\"https:\/\/drive.google.com\/file\/d\/1rVV7tcs8WNH0PDMZy3HIugON3yWKv1-X\/view?usp=drive_link\" title=\"Kinugawa Big Head Actuator Installation Instructions\"\u003edownload PDF\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\n\u003cblockquote class=\"instagram-media\" data-instgrm-captioned=\"\" data-instgrm-permalink=\"https:\/\/www.instagram.com\/reel\/DCqSGwOyXZs\/?utm_source=ig_embed\u0026amp;utm_campaign=loading\" data-instgrm-version=\"14\" style=\"background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);\"\u003e\n\u003cdiv style=\"padding: 16px;\"\u003e\n\u003ca href=\"https:\/\/www.instagram.com\/reel\/DCqSGwOyXZs\/?utm_source=ig_embed\u0026amp;utm_campaign=loading\" style=\"background: #FFFFFF; line-height: 0; padding: 0 0; text-align: center; text-decoration: none; width: 100%;\" target=\"_blank\"\u003e\n\u003cdiv style=\"display: flex; flex-direction: row; align-items: center;\"\u003e\n\u003cdiv style=\"background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-direction: column; flex-grow: 1; justify-content: center;\"\u003e\n\u003cdiv style=\"background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f4f4f4; 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font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;\"\u003eView this post on Instagram\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"padding: 12.5% 0;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;\"\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-left: 8px;\"\u003e\n\u003cdiv style=\"background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-left: auto;\"\u003e\n\u003cdiv style=\"width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\n\u003cp style=\"color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;\"\u003e\u003ca href=\"https:\/\/www.instagram.com\/reel\/DCqSGwOyXZs\/?utm_source=ig_embed\u0026amp;utm_campaign=loading\" style=\"color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;\" target=\"_blank\"\u003eA post shared by KINUGAWA (@kinugawaturbo)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/ivJ1XsYwvJM?start=26\" title=\"Kinugawa Big Head Wastegate Actuator — Installation \u0026amp; Spring Setup Overview\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes — Preload \u0026amp; Setup\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eApply \u003cstrong\u003e2 mm of preload\u003c\/strong\u003e to the actuator rod during installation\u003c\/li\u003e\n  \u003cli\u003eFor clevis-type applications: set 2 mm preload on the wastegate valve arm, then verify with compressed air at a pressure slightly above the actuator’s rated spring pressure\u003c\/li\u003e\n  \u003cli\u003eSpring surface paint is used for color identification only — it does not affect spring function or performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Kinugawa Turbo Systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePort Type:\u003c\/strong\u003e Single \u0026amp; Dual Port (2-in-1 Integrated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDefault Spring:\u003c\/strong\u003e 15 PSI (pre-fitted)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRod Lengths:\u003c\/strong\u003e 130 mm, 150 mm, 165 mm, 180 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Fitting Hole Diameter:\u003c\/strong\u003e 6.3 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHS Code:\u003c\/strong\u003e 841191\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1 kg\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KINUGAWA","offers":[{"title":"Default Title","offer_id":45791265194238,"sku":"309-13057-001","price":179.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2614\/6270\/files\/kinugawa-turbo-big-head-adjustable-wastegate-actuator-single-dual-port-2-in-1-universal-fit-with-rod-kit-35519578177790.jpg?v=1776648212","url":"https:\/\/store.kinugawaturbosystems.com\/products\/kinugawa-turbo-big-head-adjustable-wastegate-actuator-single-dual-port-2-in-1-universal-fit-with-rod-kit","provider":"Kinugawa Turbo Systems","version":"1.0","type":"link"}