{"product_id":"park-tool-bbt-179-steel-bottom-bracket-tool","title":"Park Tool BBT-179 Steel Bottom Bracket Tool","description":"The Park Tool BBT-179 Steel Bottom Bracket Tool is a precision-machined 4140 steel workshop tool for removal and installation of threaded bottom brackets with 12-notch tool fittings in the 45–47mm major diameter range. The BBT-179 fits fittings with a major diameter of 45–47mm and a minor diameter of 44mm covering SRAM BSA DUB Race Face Cinch Rotor BSA30 Zipp Vuma and Hawk Racing BB3086 among others — a compatibility set that spans current performance road gravel and mountain drivetrain platforms. The extra-deep body clears extra-wide spindles and low-profile walls at the engagement point reach recessed lockrings that shallower tools miss. Three drive options — 3\/8\" drive 1\" hex and 36mm wrench flats — address even the most seized bottom bracket cups and integrated threads in the tool body accept the Park Tool BBT-RS Bottom Bracket Tool Retaining System or GPS-1 Guide Pins (each sold separately) for improved alignment and stability during service.\u003cli\u003eMachined from 4140 steel for heavy-duty workshop use\u003c\/li\u003e\u003cli\u003eFits 12-notch threaded bottom bracket tool fittings with a major diameter of 45–47mm and a minor diameter of 44mm\u003c\/li\u003e\u003cli\u003eCompatible with SRAM BSA DUB Race Face Cinch Rotor BSA30 Zipp Vuma and Hawk Racing BB3086\u003c\/li\u003e\u003cli\u003eExtra-deep body accommodates extra-wide spindles\u003c\/li\u003e\u003cli\u003eLow-profile walls at the point of engagement reach recessed lockrings\u003c\/li\u003e\u003cli\u003eThree drive options: 3\/8\" drive fitting 1\" hex fitting and 36mm wrench flats\u003c\/li\u003e\u003cli\u003eOuter diameter at point of engagement: 50.04mm (1.97\")\u003c\/li\u003e\u003cli\u003eInternal clearance: 42mm (1.654\") depth x 30.44mm (1.198\") diameter\u003c\/li\u003e\u003cli\u003eIntegrated threads accept Park Tool BBT-RS or GPS-1 Guide Pins for added stability (each sold separately)\u003c\/li\u003e\u003cli\u003eNot rated for use with impact drivers\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e","brand":"Park Tool","offers":[{"title":"Default Title","offer_id":46432363806870,"sku":"B-PK5858","price":46.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/9912\/2326\/files\/ceccb23f081857961bd1a2ab0e20c88d6a3eceaf.jpg?v=1782381657","url":"https:\/\/www.seattleelectricbike.net\/products\/park-tool-bbt-179-steel-bottom-bracket-tool","provider":"Seattle Electric Bike","version":"1.0","type":"link"}