{"product_id":"park-tool-bbt-179-steel-bottom-bracket-tool","title":"Park Tool BBT-179 Steel Bottom Bracket Tool","description":"\u003cdiv style=\"font-family:Arial,Helvetica,sans-serif; line-height:1.5; color:#222;\"\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cul style=\"margin:0 0 0 18px; padding:0;\"\u003e\n\u003cli\u003eMachined from 4140 steel for heavy-duty workshop use\u003c\/li\u003e\n\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\n\u003cli\u003eCompatible with SRAM BSA DUB, Race Face Cinch, Rotor BSA30, Zipp Vuma, and Hawk Racing BB3086\u003c\/li\u003e\n\u003cli\u003eExtra-deep body accommodates extra-wide spindles\u003c\/li\u003e\n\u003cli\u003eLow-profile walls at the point of engagement reach recessed lockrings\u003c\/li\u003e\n\u003cli\u003eThree drive options: 3\/8\" drive fitting, 1\" hex fitting, and 36mm wrench flats\u003c\/li\u003e\n\u003cli\u003eOuter diameter at point of engagement: 50.04mm (1.97\")\u003c\/li\u003e\n\u003cli\u003eInternal clearance: 42mm (1.654\") depth x 30.44mm (1.198\") diameter\u003c\/li\u003e\n\u003cli\u003eIntegrated threads accept Park Tool BBT-RS or GPS-1 Guide Pins for added stability (each sold separately)\u003c\/li\u003e\n\u003cli\u003eNot rated for use with impact drivers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Park Tool","offers":[{"title":"Default Title","offer_id":48605504143514,"sku":"BBT-179","price":46.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0327\/4483\/3156\/files\/TL2412.jpg?v=1783007366","url":"https:\/\/velomine.com\/products\/park-tool-bbt-179-steel-bottom-bracket-tool","provider":"Velo Mine","version":"1.0","type":"link"}