{"product_id":"btr-valve-spring-installed-height-micrometer","title":"BTR Valve Spring Installed Height Micrometer","description":"\u003cp\u003e\u003cstrong\u003eBTR Valve Spring Installed Height Micrometer — BTRHM\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMeasure valve-spring installed height with the BTRHM micrometer. BTR lists a 1.400–2.100-inch range and .100-inch adjustment per revolution. Finger recesses and contrasting laser markings aid handling and reading. Intended for compatible LS and other cylinder-head\/retainer combinations; verify physical clearance and required measuring range before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Service tool; compatibility is determined by the relevant thread, seal or measuring dimensions, not a blanket vehicle-fitment guarantee.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShipping reference:\u003c\/strong\u003e BTR catalog lists 1 weight and 4 × 4 × 4 dimensions without displayed units. Provisionally interpreted as pounds and inches for shipping setup; not a confirmed packed shipping weight or outer carton. Protective packaging is additional.\u003c\/p\u003e\u003cp\u003eProvisional shipping setup: 6 × 6 × 6-inch carton and 1.5 lb packed-weight allowance including protective packaging. The assigned carton has zero additional tare in Shopify to avoid double-counting. This is an estimate, not a measured shipment.\u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":55696879550783,"sku":"BTRHM","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/2041\/6831\/files\/btrhm_3_of_3_fd054333-085e-4c43-adf8-b18d7e4fa9dc.jpg?v=1790175669","url":"https:\/\/smgspeed.com\/products\/btr-valve-spring-installed-height-micrometer","provider":"SMGspeed","version":"1.0","type":"link"}