{"id":34978,"date":"2019-10-14T20:23:03","date_gmt":"2019-10-14T19:23:03","guid":{"rendered":"https:\/\/trevorjonesltd.co.uk\/testshop\/product\/import-placeholder-for-16568\/"},"modified":"2025-10-09T16:09:04","modified_gmt":"2025-10-09T15:09:04","slug":"stork-bt4slw-large-shank-trombone-mouthpiece","status":"publish","type":"product","link":"https:\/\/trevorjonesltd.co.uk\/shop\/product\/stork-bt4slw-large-shank-trombone-mouthpiece\/","title":{"rendered":"Stork BT4SLW Large Shank Trombone Mouthpiece"},"content":{"rendered":"<h3>Stork BT4SLW Large Shank Trombone Mouthpiece<\/h3>\n<p>Stork BT4SLW Large Shank Trombone Mouthpiece. The overall cup volume for this mouthpiece is closest to that of a Bach 4G, however the throat area is more opened making this more of a \u201cV\u201d shaped design. The \u201cV\u201d shape can add a hint of brightness to the tone. The rim is a bit wider than standard rims with a soft, rounded bite. The light blank offers quick response and easy manipulation of timbre.<\/p>\n<p>The Symphonic models have larger bores and back bores than the standard models. Additionally, the Symphonic models have chamfers added to the end of the shank. A chamfer is a small angled surface added onto the end of a shaft around the opening of a hole. Its purpose is to reduce the step between the end of the mouthpiece and the\u00a0lead pipe which reduces the turbulence\u00a0at the meeting point in effect elongating the back bore right into the lead pipe.<\/p>\n<ul>\n<li><span class=\"et_pb_et_price\"><span class=\"et_pb_sum\"><strong>Cup diameter:<\/strong> 1.027&#8243;\/26.085 mm<\/span><\/span><\/li>\n<li><strong>Bore size (symphonic):<\/strong> 7.137 mm<\/li>\n<li><strong>Outer diameter:<\/strong> 39.395 mm<\/li>\n<li><strong>Cup Depth<\/strong>: 37.7 mm<\/li>\n<li><strong>Blank:<\/strong> light-weight<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Stork BT4SLW Large Shank Trombone Mouthpiece Stork BT4SLW Large Shank Trombone Mouthpiece. The overall cup volume for this mouthpiece is closest to that of a Bach 4G, however the throat area is more opened making this more of a \u201cV\u201d shaped design. The \u201cV\u201d shape can add a hint of brightness to the tone. The [&hellip;]<\/p>\n","protected":false},"featured_media":34996,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[1943,1117],"product_tag":[],"class_list":{"0":"post-34978","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-stork","7":"product_cat-trombone-mouthpieces","8":"product_shipping_class-small-item","10":"first","11":"instock","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Stork BT4SLW Large Shank Trombone Mouthpiece light weight sliver<\/title>\n<meta name=\"description\" content=\"Stork BT4SLW Large Shank Trombone Mouthpiece. The overall cup volume for this mouthpiece is closest to that of a Bach 4G, however the throat area is more opened making this more of a \u201cV\u201d shaped design. The \u201cV\u201d shape can add a hint of brightness to the tone.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/trevorjonesltd.co.uk\/shop\/product\/stork-bt4slw-large-shank-trombone-mouthpiece\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Stork BT4SLW Large Shank Trombone Mouthpiece\" \/>\n<meta property=\"og:description\" content=\"Stork BT4SLW Large Shank Trombone Mouthpiece. The overall cup volume for this mouthpiece is closest to that of a Bach 4G, however the throat area is more opened making this more of a \u201cV\u201d shaped design. The \u201cV\u201d shape can add a hint of brightness to the tone.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/trevorjonesltd.co.uk\/shop\/product\/stork-bt4slw-large-shank-trombone-mouthpiece\/\" \/>\n<meta property=\"og:site_name\" content=\"Trevor Jones Brass &amp; Woodwind\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-09T15:09:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/trevorjonesltd.co.uk\/shop\/wp-content\/uploads\/2019\/10\/Stork-Trombone-Mouthpiece.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"391\" \/>\n\t<meta property=\"og:image:height\" content=\"391\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Price\" \/>\n\t<meta name=\"twitter:data1\" content=\"&pound;66.67\" \/>\n\t<meta name=\"twitter:label2\" content=\"Availability\" \/>\n\t<meta name=\"twitter:data2\" content=\"In stock\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":[\"WebPage\",\"ItemPage\"],\"@id\":\"https:\\\/\\\/trevorjonesltd.co.uk\\\/shop\\\/product\\\/stork-bt4slw-large-shank-trombone-mouthpiece\\\/\",\"url\":\"https:\\\/\\\/trevorjonesltd.co.uk\\\/shop\\\/product\\\/stork-bt4slw-large-shank-trombone-mouthpiece\\\/\",\"name\":\"Stork BT4SLW Large Shank Trombone Mouthpiece light weight sliver\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/trevorjonesltd.co.uk\\\/shop\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/trevorjonesltd.co.uk\\\/shop\\\/product\\\/stork-bt4slw-large-shank-trombone-mouthpiece\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/trevorjonesltd.co.uk\\\/shop\\\/product\\\/stork-bt4slw-large-shank-trombone-mouthpiece\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/trevorjonesltd.co.uk\\\/shop\\\/wp-content\\\/uploads\\\/2019\\\/10\\\/Stork-Trombone-Mouthpiece.jpg\",\"datePublished\":\"2019-10-14T19:23:03+00:00\",\"dateModified\":\"2025-10-09T15:09:04+00:00\",\"description\":\"Stork BT4SLW Large Shank Trombone Mouthpiece. 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