Shimano Zee M640 Rear Hub

DESCRIPTION

Shimano Zee Rear Hub 135mm x 10mm M640 New durable and reliable hubsets - quick engaging, smooth running hubs are a big advantage on the mountain. The new Zee hubs include quality sealing, adjustable angular contact bearings, and rotate on extra stiff, one piece rear axles with integrated cone construction. Zee hubs are ready for any modern gravity bike. Shimano introduces Zee, a new line of gravity components that are an ideal starting point for aggressive riders and racers. Zee is the gateway gravity component line that allows riders to get on board with Shimano 8217;s gravity program and experience premium new component technologies at a price they can afford. Buy Shimano Zee Rear Hub 135mm x 10mm M640 from Chain Reaction Cycles, the world's largest online bicycle store.

USER REVIEWS

Showing 1-4 of 4  
[Feb 07, 2017]
Nicolas
Weekend Warrior

OVERALL
RATING
3
VALUE
RATING
3
Strength:

Angle of engagement
light
12mm*135 option

Weakness:

flange diameter

This hub worked me well, bearings seems good, and the freehub have a quick engagement, and it's pretty light. A good fact is that it has a 12mm thru axle option which permitted me to mount it with a DT swiss RWS axle on a "standard" XC frame.

BUT the flange diameter is small, I think it's OK for 26" rims but for 29" it's not good (not si stiff wheel, and needs truing more often.

[May 16, 2016]
Brian
Downhiller

OVERALL
RATING
2
VALUE
RATING
2
Strength:

Price

Weakness:

Durability
Shimano Customer Service

I used this hub for 1 season and after about 6-7 half day trips to the DH park it was destroyed.

The lock nut and bearings had cracked and disintegrated inside the hub.

When I gave shimano a call they said the replacement parts would be $40 and they didn't have any but they might be in in about a month.

No thanks.

I've been through 3 shimano hubs and I thought the zee would be different apparently it's not.My fault for sticking with the brand.

Just spend a few extra dollars and get something else.

Shimano hubs = garbage

[Aug 27, 2014]
Craig
All Mountain Rider

OVERALL
RATING
2
VALUE
RATING
3
Strength:

Price. Having said that you get what you pay for.

Weakness:

After less than a year of riding the free hub body cracked in half. The cassette kept everything together long enough for me to get home... You need 2 17mm cone wrenches/spanners to get at the bearings for maintenance which is normal and easily done. But you need a 15mm allen key to remove the free hub body. Shimano sell one for $50. $50?
Many have had problems with this free hub body. The XT and Saint versions of this hub have similar issues.

Other manufactures seem to do a better job with 12/135mm and 12/142mm hubs. Unless Shimano have made improvements to the new stock, I would recommend not buying this hub.

Similar Products Used:

Hugi,

[Jan 07, 2014]
slower_than_u
Weekend Warrior

OVERALL
RATING
3
VALUE
RATING
4
Strength:

10mm thru bolt capability
price

Weakness:

freehub body broke quickly

I selected this hub for two reasons, 10mm thru bolt capability and price. I laced it to a 26" Stan's Flow Ex and installed it in my 2011 Stumpjumper FSR Evo. It has decent engagement but after approximately 150 miles of use, the ratcheting sound from the freehub body mysteriously changed from a light "click' click" to a raspy, unhealthy sounding click/grind noise. I pulled off the Shimano XT 9 speed cassette and discovered that the freehub body was cracked in two places. It never failed but I stopped riding it until the replacement freehub showed from Shimano. The freehub body is steel so I was very surprised that it broke so quickly. I really like the rear end feel offered by the 10mm thru bolt but I'm in the market for a different 10mm hub.

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