{"product_id":"the-hub-set-sealed-bearing-mtb-hubs","title":"The Hub Set | Sealed Bearing MTB Hubs, 4-Bearing, Disc Brake","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003eA wheel is a circle of tension held in place by two small pieces of metal. Everyone upgrades the tyre, then the rim, then the groupset, and leaves the hubs until the freehub starts to skip on a climb. The hub is the only part of the wheel that has to be true under load, quiet in freewheel and serviceable after a winter of grit, and it is the cheapest place to buy reliability.\u003c\/p\u003e\n\u003cp\u003eThese are ARC hubs in aluminium alloy with four sealed cartridge bearings, a quick-release axle and a disc-brake mount, drilled for 32 holes in the common 28 and 36 hole options across the range. Sealed cartridges rather than loose balls is the decision that defines the product: a cartridge hub is not smoother from new, but it survives mud, jet-wash and a wet commute without needing a repack every season, and when it does wear, the bearing is a part number rather than a rebuild.\u003c\/p\u003e\n\u003cp\u003eThe 4-bearing layout is the load argument. Two bearings per hub carry the axle across a wider stance, which reduces the angular load on each race when the wheel is leaned into a corner or loaded in a landing. On a mountain bike that is the difference between a hub that lasts three seasons and one that develops play after a wet summer. The HG freehub body covers 8, 9, 10 and 11 speed cassettes, which keeps an older drivetrain serviceable without changing the wheelset.\u003c\/p\u003e\n\u003cp\u003eBuild quality shows in the small tolerances: the axle seats square, the disc mount faces are machined rather than cast, and the freehub engages without the half-turn of slack that cheap hubs develop. Spoke holes are drilled at the angle the rim actually needs, so a wheel built on these hubs tensions evenly rather than fighting the flange. Fit them, ride them, and the only maintenance in the first year is a wipe.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFrames and forks get the attention. The hub is what actually decides whether the wheel survives the season.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eFour sealed cartridge bearings\u003c\/strong\u003e Two per hub carrying the axle across a wider stance, which lowers angular load on each race under cornering and landings.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eAluminium alloy hubs\u003c\/strong\u003e A stiff flange with machined faces, rather than a casting that flexes under spoke tension.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eDisc brake mount\u003c\/strong\u003e Machined mounting faces so the rotor sits square and does not rub under load.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eQuick release axle\u003c\/strong\u003e Standard QR fitment for the frames and forks most riders are already running.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e32 hole drilling\u003c\/strong\u003e With 28 and 36 hole options across the range, matching the rim rather than forcing a compromise.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eHG freehub, 8 to 11 speed\u003c\/strong\u003e Keeps older drivetrains serviceable without replacing the wheelset.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eServiceable cartridges\u003c\/strong\u003e When a bearing wears, it is a part number, not a rebuild with loose balls and a cone spanner.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eFront and rear pair\u003c\/strong\u003e Supplied as a matched set with the same bearing specification on both ends.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e ARC\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Sealed bearing hub set\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminium alloy\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e 4 sealed cartridge bearings\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003ePositions:\u003c\/strong\u003e Front and rear\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eSpoke holes:\u003c\/strong\u003e 32 hole, with 28 and 36 hole variants across the range\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eBraking system:\u003c\/strong\u003e Disc brake\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eAxle:\u003c\/strong\u003e Quick release\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eFreehub:\u003c\/strong\u003e HG, 8 to 11 speed\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eSpeed compatibility:\u003c\/strong\u003e 8, 9, 10 and 11 speed cassettes\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eBuild use:\u003c\/strong\u003e MTB, hybrid, gravel and touring wheels\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eService:\u003c\/strong\u003e Cartridge replacement, no cone adjustment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3\u003eWhere It Belongs\u003c\/h3\u003e\n\u003cp\u003eThis is the hub set for the wheel build that has to last: the mountain bike ridden through British winters, the touring bike carrying load on bad roads, the commuter that gets jet-washed and left wet. It suits the rider rebuilding a set of wheels around a rim they trust, and the workshop that builds wheels for customers who come back angry when a freehub fails in six months.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will these fit my bike?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: They will if your frame and fork use quick release axles. Through-axle frames need a different hub, so check the dropout before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the advantage over loose ball hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Sealed cartridges keep grit out and need no repacking. A loose ball hub can feel smoother when new, but it needs servicing every season and dies fast in mud.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which spoke count should I choose?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Match the rim. 32 hole is the all-round choice for mountain and touring use; 28 suits lighter riders and road, 36 suits loaded touring and heavier riders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I run an 11 speed cassette?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the HG freehub covers 8 through 11 speed. A 12 speed cassette needs a different freehub standard, so this is not the hub for that drivetrain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are the bearings replaceable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. They are standard cartridges, which is the point of the design. Press the old ones out, press new ones in, and the hub is back in service.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do they come as a pair?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, front and rear with the same bearing specification. Check the option line for the exact hole count and colour.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How much maintenance do they need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: A wipe after wet rides and a bearing check once a year. No cone adjustment, no grease purge, no repacking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-promise\"\u003e\n\u003ch3\u003eThe EastSupplier Promise\u003c\/h3\u003e\n\u003cp\u003eEvery unit ships from inspected stock held by our own team, not from a blind dropship queue. Orders placed before 3pm warehouse time leave the same working day, and each parcel carries a tracking number you can follow from dispatch to doorstep. If a unit arrives damaged or does not match this listing, we replace or refund it inside 30 days.\u003c\/p\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eStock checked daily:\u003c\/strong\u003e the inventory figure on this page is live, not a placeholder.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eTechnical answers in English:\u003c\/strong\u003e a human replies to product questions within one business day.\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eNo surprise fees:\u003c\/strong\u003e the price you see is the price at checkout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg 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Bearing MTB Hubs, 4-Bearing, Disc Brake\" style=\"max-width:100%;height:auto;margin:4px 0;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/H5e0de755936a4e51952f18111cd8f2594.jpg?v=1662506142\" alt=\"The Hub Set | Sealed Bearing MTB Hubs, 4-Bearing, Disc Brake\" style=\"max-width:100%;height:auto;margin:4px 0;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/H45a7c89dd0654e0888f43a57dc5cc36cv.jpg?v=1662506144\" alt=\"The Hub Set | Sealed Bearing MTB Hubs, 4-Bearing, Disc Brake\" style=\"max-width:100%;height:auto;margin:4px 0;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/H6fc77d97a5aa4b3699382429fc939e6eR.jpg?v=1662506146\" alt=\"The Hub Set | Sealed Bearing MTB Hubs, 4-Bearing, Disc Brake\" style=\"max-width:100%;height:auto;margin:4px 0;\" loading=\"lazy\"\u003e\u003cimg 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