{"product_id":"th-industries-headset-th-b52s-1-1-8x26t-25-4x34x30","title":"TH Industries Headset Th-B52S 1 1\/8x26T 25.4x34x30","description":"\u003cp data-end=\"505\" data-start=\"137\"\u003eThe \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eTH Industries\u003c\/span\u003e TH-B52S is a threaded bicycle headset intended for frames using a \u003cstrong data-end=\"281\" data-start=\"245\"\u003e1 1\/8-inch threaded fork steerer\u003c\/strong\u003e. TH Industries later became closely associated with and effectively merged into \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eFSA\u003c\/span\u003e (Full Speed Ahead), which is why many TH Industries headset parts are cross-referenced with FSA products.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"554\" data-start=\"507\"\u003eTypical characteristics of the TH-B52S include:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"834\" data-start=\"556\"\u003e\r\n\t\u003cli data-end=\"581\" data-section-id=\"ra9gf\" data-start=\"556\"\u003eThreaded headset design\u003c\/li\u003e\r\n\t\u003cli data-end=\"612\" data-section-id=\"10f61zl\" data-start=\"582\"\u003e1 1\/8\" steerer compatibility\u003c\/li\u003e\r\n\t\u003cli data-end=\"666\" data-section-id=\"1mbmofu\" data-start=\"613\"\u003eSteel or alloy cups depending on production version\u003c\/li\u003e\r\n\t\u003cli data-end=\"710\" data-section-id=\"yhhl4x\" data-start=\"667\"\u003eLoose-ball or caged bearing configuration\u003c\/li\u003e\r\n\t\u003cli data-end=\"834\" data-section-id=\"1it07qj\" data-start=\"711\"\u003eIntended for:\r\n\t\u003cul data-end=\"834\" data-start=\"729\"\u003e\r\n\t\t\u003cli data-end=\"752\" data-section-id=\"awhmi1\" data-start=\"729\"\u003eolder mountain bikes,\u003c\/li\u003e\r\n\t\t\u003cli data-end=\"770\" data-section-id=\"1otzp1a\" data-start=\"755\"\u003ehybrid bikes,\u003c\/li\u003e\r\n\t\t\u003cli data-end=\"799\" data-section-id=\"hqun8e\" data-start=\"773\"\u003eBMX\/cruiser conversions,\u003c\/li\u003e\r\n\t\t\u003cli data-end=\"834\" data-section-id=\"1td1eja\" data-start=\"802\"\u003eand retro threaded fork setups\u003c\/li\u003e\r\n\t\u003c\/ul\u003e\r\n\t\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"862\" data-start=\"836\"\u003eOne important distinction:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1009\" data-start=\"864\"\u003e\r\n\t\u003cli data-end=\"930\" data-section-id=\"89ocld\" data-start=\"864\"\u003eA \u003cstrong data-end=\"880\" data-start=\"868\"\u003ethreaded\u003c\/strong\u003e headset uses a locknut and threaded fork steerer.\u003c\/li\u003e\r\n\t\u003cli data-end=\"1009\" data-section-id=\"r61av8\" data-start=\"931\"\u003eA \u003cstrong data-end=\"949\" data-start=\"935\"\u003ethreadless\u003c\/strong\u003e headset (modern Aheadset style) uses stem clamping instead.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"1135\" data-start=\"1011\"\u003eThe TH-B52S is therefore not compatible with modern threadless MTB forks unless the entire fork and stem system are changed.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"1203\" data-start=\"1137\"\u003eYou are also correct that headset identification often depends on:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1280\" data-start=\"1204\"\u003e\r\n\t\u003cli data-end=\"1223\" data-section-id=\"1fbbgh\" data-start=\"1204\"\u003esteerer diameter,\u003c\/li\u003e\r\n\t\u003cli data-end=\"1242\" data-section-id=\"w5mq41\" data-start=\"1224\"\u003ethread standard,\u003c\/li\u003e\r\n\t\u003cli data-end=\"1258\" data-section-id=\"17djvcl\" data-start=\"1243\"\u003estack height,\u003c\/li\u003e\r\n\t\u003cli data-end=\"1280\" data-section-id=\"1uxa2yw\" data-start=\"1259\"\u003eand cup dimensions.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"1370\" data-start=\"1282\"\u003eFor older TH Industries models, replacement compatibility is frequently checked against:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1476\" data-start=\"1371\"\u003e\r\n\t\u003cli data-end=\"1391\" data-section-id=\"1gvg1ie\" data-start=\"1371\"\u003eISO\/JIS standards,\u003c\/li\u003e\r\n\t\u003cli data-end=\"1427\" data-section-id=\"1uujo22\" data-start=\"1392\"\u003eFSA threaded headset equivalents,\u003c\/li\u003e\r\n\t\u003cli data-end=\"1476\" data-section-id=\"1qsng55\" data-start=\"1428\"\u003eor generic 1 1\/8\" threaded headset dimensions.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"1600\" data-start=\"1478\"\u003eBecause documentation for older TH Industries parts is limited online, mechanics often confirm compatibility by measuring:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1693\" data-start=\"1601\"\u003e\r\n\t\u003cli data-end=\"1631\" data-section-id=\"v6ziyy\" data-start=\"1601\"\u003ehead tube internal diameter,\u003c\/li\u003e\r\n\t\u003cli data-end=\"1659\" data-section-id=\"wxlf8y\" data-start=\"1632\"\u003ecrown race seat diameter,\u003c\/li\u003e\r\n\t\u003cli data-end=\"1693\" data-section-id=\"guga1l\" data-start=\"1660\"\u003eand steerer threading directly.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n","brand":"PCH","offers":[{"title":"Default Title","offer_id":45367327490108,"sku":"C25","price":160.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2261\/8940\/files\/23422_357-1698-6853258a786ca640890961-headset-20B52S-201-201-8-20x-2026T.webp?v=1778506357","url":"https:\/\/www.olympiccycles.co.za\/products\/th-industries-headset-th-b52s-1-1-8x26t-25-4x34x30","provider":"Olympic Cycles","version":"1.0","type":"link"}