{"product_id":"p21-stainless-steel-bicycle-headset-bearing-37-49-7-mm-45-45","title":"P21 Bicycle Headset Bearing (37 × 49 × 7 mm | 45° × 45°)","description":"\u003cp data-start=\"152\" data-end=\"477\" class=\"PDq2pG_selectionAnchorContainer\"\u003eMaintain smooth, precise steering with the \u003cstrong data-start=\"195\" data-end=\"242\"\u003eP21 Stainless Steel Bicycle Headset Bearing\u003c\/strong\u003e. Precision-engineered from premium stainless steel, this sealed cartridge bearing is designed to provide long-lasting durability, low-friction performance, and excellent resistance to corrosion, making it ideal for all-weather riding.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"479\" data-end=\"756\"\u003eThe sealed design helps keep out water, dirt, and debris, ensuring reliable performance and extending the life of your headset. Whether you're replacing a worn bearing or upgrading your bike, the P21 offers a precise fit and dependable operation for compatible headset systems.\u003c\/p\u003e\n\u003cp data-start=\"758\" data-end=\"839\"\u003eSuitable for road bikes, mountain bikes, gravel bikes, hybrid bikes, and e-bikes.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1d7mrtu\" data-start=\"841\" data-end=\"852\"\u003eFeatures\u003c\/h2\u003e\n\u003cul data-start=\"853\" data-end=\"1187\"\u003e\n\u003cli data-section-id=\"6m7eq5\" data-start=\"853\" data-end=\"891\"\u003ePremium stainless steel construction\u003c\/li\u003e\n\u003cli data-section-id=\"l89lor\" data-start=\"892\" data-end=\"939\"\u003ePrecision-machined for a smooth, accurate fit\u003c\/li\u003e\n\u003cli data-section-id=\"1y764rp\" data-start=\"940\" data-end=\"1004\"\u003eSealed cartridge design protects against water, dust, and dirt\u003c\/li\u003e\n\u003cli data-section-id=\"1w7xtt6\" data-start=\"1005\" data-end=\"1035\"\u003eCorrosion and rust resistant\u003c\/li\u003e\n\u003cli data-section-id=\"eikq3e\" data-start=\"1036\" data-end=\"1092\"\u003eLow-friction operation for smooth, responsive steering\u003c\/li\u003e\n\u003cli data-section-id=\"18o4y9r\" data-start=\"1093\" data-end=\"1131\"\u003eDurable and long-lasting performance\u003c\/li\u003e\n\u003cli data-section-id=\"11e0b3d\" data-start=\"1132\" data-end=\"1187\"\u003eDirect replacement for compatible P21 headset systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1a3ueyz\" data-start=\"1189\" data-end=\"1206\"\u003eSpecifications\u003cimg\u003e\n\u003c\/h2\u003e\n\u003cul data-start=\"1207\" data-end=\"1428\"\u003e\n\u003cli data-section-id=\"1r7vaj2\" data-start=\"1207\" data-end=\"1223\"\u003e\n\u003cstrong data-start=\"1209\" data-end=\"1219\"\u003eModel:\u003c\/strong\u003e P21\u003c\/li\u003e\n\u003cli data-section-id=\"1w4wa62\" data-start=\"1224\" data-end=\"1255\"\u003e\n\u003cstrong data-start=\"1226\" data-end=\"1239\"\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli data-section-id=\"1x3pss7\" data-start=\"1256\" data-end=\"1300\"\u003e\n\u003cstrong data-start=\"1258\" data-end=\"1267\"\u003eType:\u003c\/strong\u003e Sealed Cartridge Headset Bearing\u003c\/li\u003e\n\u003cli data-section-id=\"2gm623\" data-start=\"1301\" data-end=\"1333\"\u003e\n\u003cstrong data-start=\"1303\" data-end=\"1327\"\u003eOuter Diameter (OD):\u003c\/strong\u003e 49 mm\u003c\/li\u003e\n\u003cli data-section-id=\"wbdh43\" data-start=\"1334\" data-end=\"1366\"\u003e\n\u003cstrong data-start=\"1336\" data-end=\"1360\"\u003eInner Diameter (ID):\u003c\/strong\u003e 37 mm\u003c\/li\u003e\n\u003cli data-section-id=\"1d1jxcd\" data-start=\"1367\" data-end=\"1397\"\u003e\n\u003cstrong data-start=\"1369\" data-end=\"1392\"\u003eHeight (Thickness):\u003c\/strong\u003e 7 mm\u003c\/li\u003e\n\u003cli data-section-id=\"qjacf8\" data-start=\"1398\" data-end=\"1428\"\u003e\n\u003cstrong data-start=\"1400\" data-end=\"1418\"\u003eContact Angle:\u003c\/strong\u003e 45° × 45°\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"6hv2og\" data-start=\"1430\" data-end=\"1449\"\u003ePackage Includes\u003c\/h2\u003e\n\u003cul data-start=\"1450\" data-end=\"1499\"\u003e\n\u003cli data-section-id=\"1x1ncr\" data-start=\"1450\" data-end=\"1499\"\u003e1 × P21 Stainless Steel Bicycle Headset Bearing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HTB","offers":[{"title":"Default Title","offer_id":54317295927629,"sku":null,"price":6.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/8820\/0013\/files\/ChatGPTImageJul17_2026_12_27_14PM.png?v=1784287710","url":"https:\/\/hallthingsbikes.com\/products\/p21-stainless-steel-bicycle-headset-bearing-37-49-7-mm-45-45","provider":"HTB","version":"1.0","type":"link"}