How do I know what size my bike hub is?

Hub Flange Diameter - The distance across the hub's flange from hole to hole.
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Here's how to measure these distances:

1. Figure out the distance between the lock nuts (where the hub sits in the dropouts) - 100 or 110 mm is typical for the front. ...
2. Take that number and divide by 2.
3. Then measure from the flange to the lock nut.

What is a bikes hub width?

Common Sizes

100mm – Modern front hubs, including quick release and some thru axle types. 110mm – Some thru axle front hubs including 20mm and boost standards. 110mm rear – B.M.X. 120mm rear – Modern Track hubs. 126mm rear – Older 5 and 6 speed road bikes.

How do I choose a bike hub?

What to consider?

1. Rim compatibility – Pay attention to the number of spokes you select on your hub and rim to make sure they match!
2. Strength and durability – it goes without saying that making sure your hubs last through wear and tear is vital, particularly with them being susceptible to water and grime.

What are the different types of bike hubs?

There are four types of hubs available: the track hub, the flip flop hub, the freewheel hub or the cassette hub. The recommended way to go for a fixed gear setup is to construct a new rear wheel. You can use a track hub in such an activity.

How do I choose a rear hub?

Choosing a hub

Hubs are generally 100mm wide in front and 130mm wide in the rear for road bike frames; mountain bikers generally use 135-142mm front and rear hubs to allow space for disc brakes, which require extra material on the outer edge of the hub for mounting the disc.

Are all road bike hubs the same width?

At the front, road bike thru-axles are now pretty much standardised at 100mm long by 12mm wide (although some early thru-axle road bikes had 15mm diameter thru-axles). Rear thru-axles usually measure 142mm long and have a 12mm diameter, but you used to be able to find a few bikes with 135mm thru-axles.

Do all cassettes fit all hubs?

Most cassette hubs are compatible with Shimano cassette cogs. SRAM cassettes and most Miche, IRD and SunRace cassettes use the same inter-sprocket spacing as Shimano, but at least some SRAM 10-speed cassettes do not fit aluminum-body Dura-Ace hubs.

What is a standard freehub body?

HG (Hyper-Glide) HG, short for 'HyperGlide', is the most common and traditional freehub body design available. Created by Shimano, it is the standard used for cassettes that have at least an 11-tooth cog as the smallest cog on the cassette. HG Specific cassettes are available in 8,9,10, and 11speed options.

How do I know which Shimano freehub I have?

The quick way to tell which you have is to remove your wheel, insert the splined tool used to remove a cassette or freehub into the corresponding splines on the hub and then move the sprockets backwards.

Will any cassette fit my bike?

Yes, almost any bike is compatible with bigger cassettes, bike drivetrain is groupset of components that works in perfect harmony, any miss reconfiguring can break the perfect functionality of the system, parts that need to be changed and reconfigured when putting bigger cassette which is long-chain, wide cage ...

Are 7 and 8 speed hubs the same?

7 and 8 speed freehub – old standard

7 speed freehub is about 5 mm narrower, but all the old 7 and 8 speed cassettes will fit both 7 and 8 speed freehubs.

Can you fit a 12 speed cassette on a 11-speed hub?

The 12-speed cassette is designed to be backwards compatible with the existing 11-speed road freehub, while the 12 speed-specific freehub (available on Dura Ace hubs currently) can't be used with the 11-speed parts. Sram HG-style cassettes are largely the same spacing as Shimano, with the 10 speed exception.

How do you measure hub width?

If you are unsure of your frame spacing or have an older bicycle, measure the hub width to ensure a proper fit. To do this, remove the rear wheel and use a pair of calipers or a ruler to measure the distance between the inner surfaces of the dropouts.

How do I know what size axle I need?

For a front thru-axle, this is measured from the inside to inside of your fork. For a rear thru-axle, this is measured from the inside to inside of your frame at the drop-outs. The O.L.D. measurement is listed for many thru-axles, but isn't necessary if you know the overall length.

What is a 12mm thru axle?

Example of how to measure Thru Axle specifications.

From this specification we know 142mm is the hub width (or frame spacing) and 12mm is the diameter of the axle. We need to specify the following items to get the proper replacement Thru Axle. Total Thru Axle length from the seat to the end of the threads.

Do hubs make your bike faster?

Hubs that are "louder" usually have more engagement points. This means your drivetrain picks up faster, so less energy is lost. Hubs that have sealed cartridge bearings or needle bearings usually never need to be replaced, they're far stronger and stay cleaner.

Which bicycle hub is best?

The best mountain bike hubs you can buy

• Industry Nine Hydra. So many points of engagement. ...
• DT Swiss DT350. Hubs that will outlast your wheels, and won't bankrupt you. ...
• Hope Pro 4. Ideal for mucky UK conditions. ...
• Chris King ISO. The buzzy bee gold standard. ...
• Shimano Saint M820. ...
• Onyx Racing. ...
• Project 321. ...
• White Industries XMR.

What size MTB hub do I need?

The standard MTB rear axle dimensions are 135x5mm (for a QR rear hub) but jump and gravity bikes may use wider and thick axles for extra strength and stiffness, with the available sizes being 135×10, 142×12, 150×12, 157×12 and 165×12. Ensure your rear hub is the correct size to fit your frame.

What size is boost Hub?

Boost hubs use 15 x 110mm front and 12 x 148mm rear spacing. This means the hub flanges can be set wider apart to increase the lateral stiffness of the wheel, but it makes Boost incompatible with all the older standards.

How do I know if my bike has a thru axle?

Your bike has a thru axle if the “drop out” is a hole, rather than a U-shaped dropout. This provides added security because even if the lever on the end of the thru axle flips open, it is still threaded into the frame, holding your wheel on.

Can I put a 7 speed cassette on a 8 speed hub?

7-speed cassettes fit fine on 8- and 9-speed (and most 10-speed) hubs if you put a 4.5 mm spacer onto the body before the cassette.

Can you fit an 11-speed cassette on a 7 speed hub?

11-speed MTB hubs also use 135mm spacing unless the system is boosted in which case the dropouts have to be even further apart. What is this? Therefore, if you're trying to combine an 11-speed hub with a 7-speed cassette on a 7-speed frame, you will face a compatibility issue – the hub won't fit into the frame.

Can I fit an 11-speed cassette on a 8 speed hub?

An 11-speed road cassette cannot be installed on an 8-speed hub. The hub is too narrow and creates rubbing between the chain and the spokes when riding in the smallest gear.