{"product_id":"bravvos-bb-set-opc-9piece-s-43mm-small","title":"Bravvos BB Set Opc 9Piece S 43Mm Small","description":"\u003ch2 data-end=\"140\" data-section-id=\"1b387ru\" data-start=\"123\"\u003e????️ What it is\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"267\" data-start=\"141\"\u003eThis is a \u003cstrong data-end=\"219\" data-start=\"151\"\u003ecomplete overhaul kit for a One-Piece Crank (OPC) bottom bracket\u003c\/strong\u003e—the older, simpler crank system still found on:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"354\" data-start=\"268\"\u003e\r\n\t\u003cli data-end=\"288\" data-section-id=\"1o9xi3w\" data-start=\"268\"\u003eBudget BMX bikes\u003c\/li\u003e\r\n\t\u003cli data-end=\"310\" data-section-id=\"u30siq\" data-start=\"289\"\u003eOlder kids’ bikes\u003c\/li\u003e\r\n\t\u003cli data-end=\"354\" data-section-id=\"5qxg9y\" data-start=\"311\"\u003eSome entry-level MTBs and utility bikes\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"472\" data-start=\"356\"\u003eInstead of separate crank arms and axle, OPC systems use a \u003cstrong data-end=\"445\" data-start=\"415\"\u003esingle solid crank spindle\u003c\/strong\u003e running through the frame.\u003c\/p\u003e\r\n\r\n\u003chr data-end=\"477\" data-start=\"474\"\u003e\r\n\u003ch2 data-end=\"504\" data-section-id=\"1t694pa\" data-start=\"479\"\u003e???? Key specs explained\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"537\" data-start=\"506\"\u003e\u003cstrong data-end=\"535\" data-start=\"506\"\u003e???? 43 mm cup size (Small)\u003c\/strong\u003e\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"693\" data-start=\"538\"\u003e\r\n\t\u003cli data-end=\"605\" data-section-id=\"16wtr0z\" data-start=\"538\"\u003eRefers to the \u003cstrong data-end=\"578\" data-start=\"554\"\u003eframe shell diameter\u003c\/strong\u003e where the cups thread in\u003c\/li\u003e\r\n\t\u003cli data-end=\"633\" data-section-id=\"1ymtmhi\" data-start=\"606\"\u003e“Small” = 43 mm version\u003c\/li\u003e\r\n\t\u003cli data-end=\"693\" data-section-id=\"iy1zv9\" data-start=\"634\"\u003e⚠️ Not interchangeable with “Large” (~51.5 mm) OPC shells\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"698\" data-start=\"695\"\u003e\r\n\u003cp data-end=\"776\" data-start=\"700\"\u003e\u003cstrong data-end=\"727\" data-start=\"700\"\u003e⚙️ 9-piece complete kit\u003c\/strong\u003e\u003cbr data-end=\"730\" data-start=\"727\"\u003e\r\nIncludes everything needed for a full rebuild:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"892\" data-start=\"777\"\u003e\r\n\t\u003cli data-end=\"796\" data-section-id=\"gu34jk\" data-start=\"777\"\u003e2 threaded cups\u003c\/li\u003e\r\n\t\u003cli data-end=\"817\" data-section-id=\"jvshic\" data-start=\"797\"\u003e2 cone adjusters\u003c\/li\u003e\r\n\t\u003cli data-end=\"837\" data-section-id=\"1ype3b1\" data-start=\"818\"\u003e2 bearing cages\u003c\/li\u003e\r\n\t\u003cli data-end=\"850\" data-section-id=\"3vsyw3\" data-start=\"838\"\u003e1 washer\u003c\/li\u003e\r\n\t\u003cli data-end=\"864\" data-section-id=\"1d3kcu5\" data-start=\"851\"\u003e1 locknut\u003c\/li\u003e\r\n\t\u003cli data-end=\"892\" data-section-id=\"5ko1qo\" data-start=\"865\"\u003e1 spacer\/adjuster piece\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"960\" data-start=\"894\"\u003e???? Basically: a full refresh of the entire bottom bracket assembly\u003c\/p\u003e\r\n\r\n\u003chr data-end=\"965\" data-start=\"962\"\u003e\r\n\u003cp data-end=\"1003\" data-start=\"967\"\u003e\u003cstrong data-end=\"1001\" data-start=\"967\"\u003e???? 5\/16” ball bearings (caged)\u003c\/strong\u003e\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1175\" data-start=\"1004\"\u003e\r\n\t\u003cli data-end=\"1067\" data-section-id=\"1qqcfii\" data-start=\"1004\"\u003eLarger steel balls designed for \u003cstrong data-end=\"1065\" data-start=\"1038\"\u003eload-bearing durability\u003c\/strong\u003e\n\u003c\/li\u003e\r\n\t\u003cli data-end=\"1113\" data-section-id=\"mx7z30\" data-start=\"1068\"\u003eCaged design keeps bearings spaced evenly\u003c\/li\u003e\r\n\t\u003cli data-end=\"1175\" data-section-id=\"10ahk0w\" data-start=\"1114\"\u003eEasy to service, but not sealed (more maintenance required)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"1180\" data-start=\"1177\"\u003e\r\n\u003ch2 data-end=\"1203\" data-section-id=\"eqpgp2\" data-start=\"1182\"\u003e???? Where it’s used\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"1305\" data-start=\"1204\"\u003eThis kit is specifically for \u003cstrong data-end=\"1266\" data-start=\"1233\"\u003eOPC (one-piece crank) systems\u003c\/strong\u003e, not modern cartridge bottom brackets.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"1321\" data-start=\"1307\"\u003eTypical bikes:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1417\" data-start=\"1322\"\u003e\r\n\t\u003cli data-end=\"1341\" data-section-id=\"1k2e2vt\" data-start=\"1322\"\u003eOlder BMX bikes\u003c\/li\u003e\r\n\t\u003cli data-end=\"1369\" data-section-id=\"1ujlfkm\" data-start=\"1342\"\u003eLow-cost commuter bikes\u003c\/li\u003e\r\n\t\u003cli data-end=\"1385\" data-section-id=\"1x7cedu\" data-start=\"1370\"\u003eKids’ bikes\u003c\/li\u003e\r\n\t\u003cli data-end=\"1417\" data-section-id=\"qpms7z\" data-start=\"1386\"\u003eSome older steel-frame MTBs\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"1422\" data-start=\"1419\"\u003e\r\n\u003ch2 data-end=\"1461\" data-section-id=\"1yowdd4\" data-start=\"1424\"\u003e⚠️ Important compatibility warning\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"1500\" data-start=\"1462\"\u003eThis is where people usually go wrong:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1662\" data-start=\"1502\"\u003e\r\n\t\u003cli data-end=\"1574\" data-section-id=\"1dff8rw\" data-start=\"1502\"\u003e❌ NOT for modern \u003cstrong data-end=\"1564\" data-start=\"1521\"\u003esquare taper \/ Octalink \/ Hollowtech II\u003c\/strong\u003e systems\u003c\/li\u003e\r\n\t\u003cli data-end=\"1620\" data-section-id=\"qy89r1\" data-start=\"1575\"\u003e❌ NOT for cartridge-style bottom brackets\u003c\/li\u003e\r\n\t\u003cli data-end=\"1662\" data-section-id=\"uag88f\" data-start=\"1621\"\u003e✔ Only for \u003cstrong data-end=\"1662\" data-start=\"1634\"\u003eone-piece crank spindles\u003c\/strong\u003e\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"1753\" data-start=\"1664\"\u003eIf your crank arms are separate pieces bolted onto a square axle, this is the wrong part.\u003c\/p\u003e\r\n\r\n\u003chr data-end=\"1758\" data-start=\"1755\"\u003e\r\n\u003ch2 data-end=\"1787\" data-section-id=\"1nf48vs\" data-start=\"1760\"\u003e???? Why it’s still useful\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"1831\" data-start=\"1788\"\u003eEven though OPC systems are outdated, they:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"1938\" data-start=\"1832\"\u003e\r\n\t\u003cli data-end=\"1857\" data-section-id=\"1xja88z\" data-start=\"1832\"\u003eAre cheap to maintain\u003c\/li\u003e\r\n\t\u003cli data-end=\"1894\" data-section-id=\"t3ahsf\" data-start=\"1858\"\u003eEasy to rebuild with basic tools\u003c\/li\u003e\r\n\t\u003cli data-end=\"1938\" data-section-id=\"85ig4e\" data-start=\"1895\"\u003eCommon on “beater bikes” and BMX setups\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp data-end=\"2065\" data-start=\"1940\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eBravvos\u003c\/span\u003e positions this kit as a \u003cstrong data-end=\"2037\" data-start=\"2002\"\u003ebudget-friendly repair solution\u003c\/strong\u003e, not a performance upgrade.\u003c\/p\u003e\r\n\r\n\u003chr data-end=\"2070\" data-start=\"2067\"\u003e\r\n\u003ch2 data-end=\"2089\" data-section-id=\"pmvb6c\" data-start=\"2072\"\u003e???? Bottom line\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"2282\" data-start=\"2090\"\u003eThe Bravvos OPC 9-piece BB set is a \u003cstrong data-end=\"2183\" data-start=\"2126\"\u003efull rebuild kit for old-school one-piece crank bikes\u003c\/strong\u003e. It’s simple, affordable, and functional—but only useful if your bike actually uses an OPC system.\u003c\/p\u003e\r\n","brand":"Bravvos","offers":[{"title":"Default Title","offer_id":44056040144956,"sku":"BBS110","price":50.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2261\/8940\/files\/9930_w1FynHdZmt4x.jpg?v=1772878385","url":"https:\/\/www.olympiccycles.co.za\/products\/bravvos-bb-set-opc-9piece-s-43mm-small","provider":"Olympic Cycles","version":"1.0","type":"link"}