Axle Hub

Bike Hubs & Thru Axles: Sealed Bearing Parts

A bike hub sits at the center of each wheel and lets it spin smoothly on the axle. Velozzo stocks the bicycle hub in every fit, from a smooth sealed bearing hub to a stiff boost hub for modern trail bikes. Choose the right bike wheel hub, a fresh bike hub bearing, or a thru axle to keep your wheels rolling true and quiet.

Free USA Shipping

Free USA Shipping

Every hub order ships free, no minimums.
Modern Axle Standards

Modern Axle Standards

Thru axle and quick release fittings stocked.
Easy 30-Day Returns

Easy 30-Day Returns

Wrong fit? Send it back, hassle free.
Smooth Sealed Bearings

Smooth Sealed Bearings

Spin freely and shut out dirt reliably.

8 Products

Shop by Type

SHOP BY HUB TYPE

Hub Type Best For
Sealed Bearing Hub Sealed bearing hubs keep out dirt and water, spinning smoothly with very little servicing.
Boost Hub Wider boost hubs add wheel stiffness and clearance for modern mountain bikes and trails.
Thru Axle Hub Thru axle hubs lock the wheel firmly for precise, confident braking and sharp handling.
Quick Release Hub Quick release skewers remove the wheel fast, ideal for road and city commuter bikes.
Freehub Body Freehub bodies hold your cassette and engage the drive when you pedal the bike.

What to Look for When Buying a Bike Hub

Hubs differ by axle, bearing, freehub, and spacing. These four points help you match the right hub to your wheel.
Axle Standard

Axle Standard

Your hub must match your frame and fork. Older bikes use a quick release skewer, while modern bikes use a thru axle such as a 12x142 thru axle at the rear. Check your dropout width and axle type first.

Bearing Type

Bearing Type

Bearings decide how long a hub lasts. A sealed bearing hub shuts out dirt and water, so it spins smoothly and needs very little service. Loose-ball hubs cost less but they ask for regular greasing to keep running well.

Freehub Fit

Freehub Fit

The freehub body must match your own cassette brand. Shimano, SRAM XD, and micro-spline systems each use a different freehub body. Check which cassette you run before buying, since the wrong freehub will not accept your gears at all.

Hub Spacing

Hub Spacing

Spacing decides whether the hub fits your frame. A boost hub is wider than standard for extra stiffness on trail bikes, while road hubs stay narrower. Measure your own frame and fork spacing so the new hub seats correctly.

Typical Specs Across Our Bike Hub Range

Spec Detail
Axle Types Quick release skewer and modern thru axle fittings both available.
Thru Axle Common 12x142 thru axle and wider boost hub spacing options.
Bearings Smooth sealed bearing hub design built for low-maintenance, long life.
Freehub Shimano, SRAM XD, and micro-spline freehub body fits all available.
Fitting Installed at home with basic hub and axle hand tools.
Best For Suits road, mountain, gravel, and daily everyday commuter bike wheels.

A hub is the heart of a wheel. Build one into fresh bike wheelsets, pair it with a matching bike cassette, and finish with new bike tires for a smooth ride. Front hubs pair with the fork, so check your suspension forks spacing, then match a hub to your mountain bikes or road bikes.

Buy Bike Hubs and Axles Online at Velozzo

Every bike hub at Velozzo is chosen for smooth bearings, a secure axle fit, and long life at any price. Our range covers sealed bearing, boost, and thru axle hubs for gravel bikes, electric bikes, and more, plus full MTB groupsets to match, with free shipping across the USA and a 30-day return policy. Our team is available by email and chat seven days a week.
Call (844) 442-3025

Frequently Asked Questions

What is a bike hub?
A bike hub is the center part of each wheel that holds the axle and bearings. It lets the wheel spin freely, and the rear bike wheel hub also carries the freehub body that drives the bike.
What is the difference between a thru axle and quick release?
A quick release skewer clamps the wheel with a lever and is common on older bikes. A thru axle threads through the hub for a stiffer, more secure fit, which suits modern disc brake bikes better.
What is a boost hub?
A boost hub is wider than a standard hub, spacing the flanges further apart. This builds a stiffer, stronger wheel with more tire clearance, which is why modern mountain bikes now use boost spacing.
What are sealed bearing hubs?
A sealed bearing hub encloses its bearings in a cartridge that keeps out dirt and water. It spins smoothly for longer and needs far less servicing than an open loose-ball bike hub bearing setup.
What is a freehub body?
The freehub body is the part of the rear hub that your cassette slides onto. It engages when you pedal and freewheels when you coast. Different brands use different freehub body standards, so check yours.
What does 12x142 thru axle mean?
It describes the axle size: 12mm thick and 142mm wide. A 12x142 thru axle is the most common rear standard on modern road, gravel, and mountain bikes, so many frames and hubs share this fit.
How do I know which hub fits my bike?
Check three things: axle type, hub spacing, and freehub standard. Measure your dropout width, note whether you use a thru axle or quick release skewer, and match your cassette brand to the freehub body.
Do you offer free shipping on bike hubs?
Yes, Velozzo ships every bike hub and axle free across the USA with no minimum order. Most orders arrive within a few business days, and each part is backed by our 30-day return policy.