{"product_id":"supertech-toyota-4age-16v-single-valve-spring-set-of-16","title":"Supertech Toyota 4AGE 16V Single Valve Spring - Set of 16","description":"\u003cp class=\"p1\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e: SPR-TC25S-16 \/ \u003cstrong\u003eUPC\u003c\/strong\u003e: 1037721244671\u003c\/p\u003e\n\u003ch4 class=\"p1\"\u003e\u003cb\u003eSupertech Toyota 4AGE 16V Single Valve Springs Set of 16\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp class=\"p1\"\u003eThese valve springs deliver precise control and consistent performance under high-rev conditions, allowing your engine to maintain valve timing accuracy for smoother power delivery and reduced risk of valve float. Built from premium Super Clean Chrome Silicon Vanadium Steel alloy, they resist fatigue and maintain shape over extended use, making them a reliable option for track days, street driving, or daily reliability in performance builds. Compared to stock or alternative springs, this set provides higher seat and open pressures that support increased lift and RPM without sacrificing durability, giving you the edge in responsive throttle and efficient combustion.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eKey Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eMaterial\u003c\/b\u003e: Super Clean Chrome Silicon Vanadium Steel Alloy, heat-treated for strength and longevity\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eSpring Type\u003c\/b\u003e: Single beehive design for reduced mass and better high-RPM stability\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eSeat Pressure\u003c\/b\u003e: 55 lbs at 35.4 mm (1.394 inches)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eOpen Pressure\u003c\/b\u003e: 130 lbs at 10.5 mm (0.413 inches) lift\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eCoil Bind Height\u003c\/b\u003e: 21 mm (0.827 inches)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eMaximum Valve Lift\u003c\/b\u003e: 14.40 mm (0.567 inches)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eSpring Rate\u003c\/b\u003e: 7.60 lbs\/mm\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eOuter Diameter\u003c\/b\u003e: 25 mm\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eInner Diameter\u003c\/b\u003e: 18 mm\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eUPC\u003c\/b\u003e: 1037721244671\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eThese specs ensure stable valve operation up to demanding RPM levels, helping extract more from your 4AGE 16V while keeping the valvetrain secure.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eVehicle Fitment\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis Supertech SPR-TC25S-16 set fits a range of vehicles equipped with the Toyota 4A-GE 16-valve engine or compatible Mazda FS-series valvetrains. Verify compatibility with your specific setup, as modifications may be needed for some applications.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eToyota Models (4A-GE 16V Engine):\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1983-1987 Corolla Levin (AE86)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1983-1987 Sprinter Trueno (AE86)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1984-1987 Corolla (AE86)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1984-1989 MR2 (AW11)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1983-1992 Carina (various trims with 4A-GE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMazda Models:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1989-1992 Probe (GT with FS-DE)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1993-2002 626 (2.0L FS)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1993-1997 MX-6 (2.0L FS)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1993-2002 Protegé (2.0L FS, including 2001-2003 models)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eWhat's Included in Your Purchase\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e16 x Supertech Single Valve Springs (part SPR-TC25S each)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cstrong\u003eNote\u003c\/strong\u003e: No retainers, keepers, or bases included, pair with Supertech RET-2500\/T1 titanium retainers and SS-3012 spring bases for a complete valvetrain refresh\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePackaging and Shipping Details\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePart Weight\u003c\/b\u003e: 0.96 lbs (total set)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eShipping Box Dimensions\u003c\/b\u003e: 6.50 inches (width) x 2.50 inches (height) x 7.00 inches (depth)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eOrder the Supertech Toyota 4AGE 16V Single Valve Springs Set of 16 today for a straightforward installation that enhances your engine's breathing and output. Ideal for enthusiasts rebuilding classic JDM icons like the AE86 or tuning Mazda coupes for spirited drives.\u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":43666830327887,"sku":"SPTSPR-TC25S-16","price":182.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/SKU_SPR-TC25S-16_UPC_1037721244671.jpg?v=1760020219","url":"https:\/\/www.blackopsautoworks.com\/products\/supertech-toyota-4age-16v-single-valve-spring-set-of-16","provider":"Black Ops Auto Works","version":"1.0","type":"link"}