{"product_id":"manley-90-99-mazda-miata-1-8l-bp056-dohc-16-exhaust-29mm-stainless-race-master-valves","title":"Manley Race Master Exhaust Valves – 1990-1999 Mazda Miata 1.8L (BP056) DOHC 16 Exhaust | 29mm Head","description":"\u003cp\u003eThis Manley Race Master exhaust valve family is intended for 1990-1999 Mazda Miata 1.8L (BP056) DOHC 16 Exhaust builds where valve dimensions need to be matched deliberately to the cylinder head, seat work, and valvetrain geometry. The parent listing is distinguished by \u003cstrong\u003e29mm Head\u003c\/strong\u003e, which should be cross-checked against the rest of the engine combination.\u003c\/p\u003e\u003cp\u003eFor 1990-1999 Mazda Miata 1.8L (BP056) DOHC 16 Exhaust, valve diameter changes can alter seat work and chamber\/shrouding relationships, while alternate overall lengths can change installed height and rocker geometry.\u003c\/p\u003e\u003ch3\u003eKey Product Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 1990-1999 Mazda Miata 1.8L (BP056) DOHC 16 Exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManley Series:\u003c\/strong\u003e Race Master\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Position:\u003c\/strong\u003e Exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitle Specification:\u003c\/strong\u003e 29mm Head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family Detail:\u003c\/strong\u003e Race Series application focus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 11103-8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Quantity\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSet of 8 valves.\u003c\/strong\u003e The selected configuration is supplied as a 8-piece valve package. This quantity applies to the selected Manley SKU family shown on this product page.\u003c\/p\u003e\u003ch3\u003eSelection \u0026amp; Fitment Notes\u003c\/h3\u003e\u003cp\u003eValve fitment should be verified from the cylinder head itself; check the required head size, stem size, overall length, seat work, and valvetrain geometry rather than relying on engine name alone.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProfessional engine assembly and measurement are recommended. Product specifications should be confirmed against the selected Manley part number and the requirements of the exact engine build.\u003c\/em\u003e\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":50184538980602,"sku":"MAN11103-8","price":211.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/c6ccd65ebfd1e956c2aff76b8661b6a9L_19ca233e-c158-424e-a141-7dbf876e2648.jpg?v=1787802011","url":"https:\/\/lgcracing.com\/products\/manley-90-99-mazda-miata-1-8l-bp056-dohc-16-exhaust-29mm-stainless-race-master-valves","provider":"Legacy Racing","version":"1.0","type":"link"}