{"product_id":"supertech-hevi-1050-8-exhaust-valve-set-honda-cr-z","title":"Supertech Honda LEA1 \/ L15A1 Inconel Exhaust Valve - Set of 8","description":"\u003ch4\u003eRebuild Your CR-Z Head With Valves Built For Sustained Heat\u003c\/h4\u003e\n\u003cp\u003eThe Supertech HEVI-1050-8 is a complete set of eight Inconel exhaust valves engineered for the Honda LEA1 and L15A1 1.5L SOHC engine found in the 2010-2015 Honda CR-Z. Machined from a nickel based superalloy, HEVI-1050-8 valves resist the thermal fatigue and creep that stock exhaust valves develop under repeated heat cycling, making this set a common choice for owners refreshing a high mileage head or building for track use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eComplete set of eight Inconel exhaust valves for one full engine rebuild\u003c\/li\u003e\n\u003cli\u003eNickel based superalloy construction (Inconel 751 \/ Nimonic 80A) for high temperature strength\u003c\/li\u003e\n\u003cli\u003eSwirl polished valve heads to reduce turbulence and support consistent flow\u003c\/li\u003e\n\u003cli\u003ePrecision ground stem with controlled finish for stable guide clearance\u003c\/li\u003e\n\u003cli\u003eHardened valve tip rated beyond 52 HRc for long term wear resistance\u003c\/li\u003e\n\u003cli\u003eSingle groove retainer design matches OEM style valve springs and retainers\u003c\/li\u003e\n\u003cli\u003e23mm standard head diameter dish face matches factory port geometry\u003c\/li\u003e\n\u003cli\u003eHEVI-1050-8 direct fit replacement, no head modification required for stock builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment Table\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2010-2015\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCR-Z\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eHEVI-1050-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Type\u003c\/td\u003e\n\u003ctd\u003eExhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e8 valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter\u003c\/td\u003e\n\u003ctd\u003e23mm (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStem Diameter\u003c\/td\u003e\n\u003ctd\u003e5.46mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e117.55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eInconel (751 \/ Nimonic 80A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFace Type\u003c\/td\u003e\n\u003ctd\u003eDish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGroove Type\u003c\/td\u003e\n\u003ctd\u003eSingle groove\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Codes\u003c\/td\u003e\n\u003ctd\u003eLEA1, L15A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eNot published by manufacturer for this set configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e8x HEVI-1050-8 Inconel exhaust valves\u003c\/li\u003e\n\u003cli\u003eManufacturer spec sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAbout Supertech\u003c\/h4\u003e\n\u003cp\u003eSupertech Performance designs and manufactures valvetrain components for import and domestic engine platforms, supplying engine builders and performance shops with valves, springs, retainers, and related hardware machined to tight tolerances for both daily driven and track focused engines.\u003c\/p\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the HEVI-1050-8?\u003c\/strong\u003e\n\u003cp\u003eThe HEVI-1050-8 is a set of eight Inconel exhaust valves from Supertech built specifically for the Honda LEA1 and L15A1 1.5L engine used in the 2010-2015 Honda CR-Z. The nickel superalloy construction is designed to resist heat fatigue better than stock steel valves.\u003c\/p\u003e\n\u003cstrong\u003eWill the HEVI-1050-8 fit a Honda Fit?\u003c\/strong\u003e\n\u003cp\u003eThe L15A engine family is shared across several Honda models, but this listing is verified for the CR-Z LEA1\/L15A1 application. Confirm your specific engine code before ordering if installing in another chassis.\u003c\/p\u003e\n\u003cstrong\u003eDo I need new valve springs and retainers with the HEVI-1050-8?\u003c\/strong\u003e\n\u003cp\u003eStock springs and retainers are compatible with the HEVI-1050-8 single groove design for most street builds, but a head builder should check installed height and seat pressure during installation regardless of valve brand.\u003c\/p\u003e\n\u003cstrong\u003eWhat material are the HEVI-1050-8 valves made from?\u003c\/strong\u003e\n\u003cp\u003eThey are manufactured from Inconel 751\/Nimonic 80A, a nickel based superalloy chosen for its ability to hold strength at the high temperatures exhaust valves are exposed to during normal engine operation.\u003c\/p\u003e\n\u003cstrong\u003eCan the HEVI-1050-8 be used in a naturally aspirated CR-Z or only in modified builds?\u003c\/strong\u003e\n\u003cp\u003eThese valves are suitable for both stock power level rebuilds and modified builds. Many owners choose Inconel exhaust valves during a routine head rebuild simply for the added heat resistance over factory steel valves.\u003c\/p\u003e\n\u003cstrong\u003eDoes installing the HEVI-1050-8 require machine work on the head?\u003c\/strong\u003e\n\u003cp\u003eNo modification is required for a stock LEA1\/L15A1 head. The 23mm standard head diameter and dish face match factory port geometry, so this is a direct fit replacement.\u003c\/p\u003e\n\u003cstrong\u003eWhat is the stem diameter of the HEVI-1050-8?\u003c\/strong\u003e\n\u003cp\u003eThe stem diameter is 5.46mm, matching the factory LEA1\/L15A1 valve guide specification.\u003c\/p\u003e\n\u003cstrong\u003eHow long is the HEVI-1050-8 exhaust valve?\u003c\/strong\u003e\n\u003cp\u003eEach valve measures 117.55mm in overall length.\u003c\/p\u003e\n\u003ch4\u003eInstall Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eRemove the cylinder head and disassemble the valvetrain following factory service procedures\u003c\/li\u003e\n\u003cli\u003eInspect and measure valve guides for wear before installing new valves\u003c\/li\u003e\n\u003cli\u003eCut or verify valve seats to the correct angle and contact width for the new valve faces\u003c\/li\u003e\n\u003cli\u003eInstall the HEVI-1050-8 valves and confirm smooth movement through the guides\u003c\/li\u003e\n\u003cli\u003eReinstall springs, retainers, and seals, then set installed height and spring pressure\u003c\/li\u003e\n\u003cli\u003eCheck for coil bind and retainer to seal clearance before reassembling the head\u003c\/li\u003e\n\u003cli\u003eTorque the head and valvetrain components to factory specification\u003c\/li\u003e\n\u003cli\u003eRun a leak down and compression check after break in\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":46273593081935,"sku":"SPTHEVI-1050-8","price":359.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/supertech-hevi-1050-8-exhaust-valve-set-clean_8aaa1978-0ce6-4d82-94fc-c6d3cc24d151.webp?v=1785286983","url":"https:\/\/www.blackopsautoworks.com\/products\/supertech-hevi-1050-8-exhaust-valve-set-honda-cr-z","provider":"Black Ops Auto Works","version":"1.0","type":"link"}