{"product_id":"supertech-02-21-wrx-sti-16v-dual-valve-spring-kit-performance-replacement","title":"Supertech [02-21 WRX\/STi] 16V Dual Valve Spring Kit - Performance Replacement","description":"Supertech Subaru WRX\/STi 16V Dual Valve Spring Kit\n\u003cp\u003eThe Supertech 16V Dual Valve Spring Kit is designed for Subaru WRX and STI applications requiring upgraded valve spring performance. Part number sptSPRK-TS1015-SU1, this kit provides a matched dual-spring setup for compatible 16-valve cylinder heads.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFeature: Dual valve spring configuration for compatible Subaru performance applications\u003c\/li\u003e\n\u003cli\u003eFeature: Designed for 16-valve WRX and STI cylinder heads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBuilt by Supertech, this valve spring kit is intended for engine builds where reliable valve control is important. The dual-spring design helps support consistent valve-train operation at elevated engine speeds when used with compatible components and the correct installation specifications. It is suited for replacement or performance-oriented engine projects involving the applicable Subaru WRX and STI platforms.\u003c\/p\u003e\n\u003cp\u003eBefore installation, verify cylinder head compatibility, spring specifications, installed height, seat pressure, open pressure, coil-bind clearance, retainer compatibility, and the complete valve-train setup. Proper measurements and installation procedures are essential for dependable operation. This is an automotive replacement or performance component and should be installed by a qualified technician familiar with Subaru engines. Confirm the vehicle year, engine configuration, and application requirements before ordering.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDual valve spring configuration for compatible Subaru performance applications\u003c\/li\u003e\n\u003cli\u003eDesigned for 16-valve WRX and STI cylinder heads\u003c\/li\u003e\n\u003cli\u003eSuitable for replacement and performance-oriented engine builds\u003c\/li\u003e\n\u003cli\u003eSupertech part number sptSPRK-TS1015-SU1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nAir Freight Prohibited: false\u003cbr\u003e\nNot Carb Approved: false\u003cbr\u003e\nLtl Freight Required: false\u003cbr\u003e\nProp 65: Unknown\u003cbr\u003e\nPart Type: automotive\u003cbr\u003e\nEpa: N\/A\u003cbr\u003e\nCarb Acknowledgement Required: false\u003cbr\u003e\nRegular Stock: t\u003cbr\u003e\nUnits Per Sku: 1","brand":"Supertech","offers":[{"title":"Default Title","offer_id":47258172489830,"sku":"sptSPRK-TS1015-SU1","price":585.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/8703\/7237\/files\/34841158b0d8bc77bb7690976e861e49.png?v=1790175358","url":"https:\/\/jdmuscleusa.com\/products\/supertech-02-21-wrx-sti-16v-dual-valve-spring-kit-performance-replacement","provider":"JDMuscle","version":"1.0","type":"link"}