Large 22mm diameter hollow pipe billet axle reduces weight, increases strength and rigidity. An 8-spline joint between the bottom bracket axle and crank results in a more rigid, non-loosening crank assembly. Maintenance-free sealed cartridge keeps out dirt, mud, water and also allows bottom bracket to be installed quickly without adjustment.
Submitted by
Anton Fomenko
a Cross Country Rider
from Waterdown, ON
Date Reviewed: June 14, 2005
Strengths: Um...It's a bottom bracket..
Weaknesses: Okay here we go, it creaks like hell and it snapped in half!
Bottom Line:
Don't buy this if you don't like constant creaks and a total braekage. As I said, it creaks a lot and at random times, and mine broke in half when I was riding on flat ground! My warranty was up so I had to shell out 60 bucks for a new one and installation
Submitted by
Bon Trager
a Weekend Warrior
from Rosario, La Union
Date Reviewed: April 6, 2005
Strengths: Cheap, good rolls, easy to maintain
Weaknesses: outside thread looses easily causes the bb to crek, crek, crek, needs teflon to fix, see http://bontrager.proboards26.com/index.cgi?board=rims&action=display&num=1112775136
Bottom Line:
Same problem with all deore bb users, my tip, use teflon or rugby, your problem will be solved, deore is very nice when you set it up correctly.
Similar Products Used: STX RC, Old Suntour, XT, LX
Bike Setup: M7 my new GTS
Overall Rating:
Value Rating:
Submitted by
tyler johnson
a Cross Country Rider
from pacific grove, ca
Date Reviewed: August 22, 2004
Strengths: inexpensive
Weaknesses: creak, creak, creak
Bottom Line:
i installed a new bb for the AIDS LifeCycle, rode this bb 600 miles from SF to LA, brought my bike home and within a week it was CREAKING! it still rolls but sounds like it's about to die. (yes, i changed the pedals just to be sure). i think 600 miles is pretty low for life expectancy on a bb.
Bike Setup: 1999 leadhopper + xtracycle, deore hollowtech cranks
Overall Rating:
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Submitted by
Juan Ahmed
a Cross Country Rider
from Sydney, Australia
Date Reviewed: August 4, 2004
Strengths: Cheap
Weaknesses: Weak, non-replaceable components
Bottom Line:
Cracked the bearing race and it couldn't be replaced with another bearing, instead had to buy a new bb. Got Truvantiv instead. It's a shame decent quality bikes come with such poor parts, but I suppose if you bought top notch you pay top dollar.
Submitted by
Lexa Doig
a Cross Country Rider
from Philippines
Date Reviewed: January 7, 2004
Strengths: Model BB-UN40
Strong, heavy, steel spindle
Weaknesses: Heavy, and heavy...
Bottom Line:
No deterioration in 3 months of use. I think it'll last for some time. My lower grade BB-CSxx lasted me years... but that was Japan made, this UN40 is singaporean...
Similar Products Used: Shimano BB-CSxx, BB-UN25, YST crap lasted 2 months, non-cartridge BB lasted me 1 month!!!
Bike Setup: Al diamond frame, deore alivio mix, sugino cranks (best bang for the buck!), RST fork, blah blah blah
Overall Rating:
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Submitted by
Ti
a Racer
from Fremont, CA
Date Reviewed: August 23, 2002
Strengths: Great Strength for aggressive XC, (Splined version) Good stiffness, sealed bearings
Weaknesses: Steel outers rust easily, not really that smooth.
Bottom Line:
This is a good budget bottom braket. It is not really a race bb because it is not that smooth. the slpined interface adds a notice able amount of stiffness. Scince it is seald you dont have to worry about it getting clean and serviced.
Submitted by
Vincenzo
a Cross Country Rider
from Salerno(near amalfi coast) Italy
Date Reviewed: May 8, 2002
Strengths: Stiff,solid feeling,much better power transfer,smoother spinning under heavy cranking,improved crankarms/axle interface,crank bolts no more tend to loose.
Weaknesses: Awful plastic cup on non-drive side(and SHIMANO is claiming on the web that the DEORE too specs an aluminium one)-the outer collar fitted around the axle on non-drive side looks not tightly fixed while the bb is still disassembled but once installed looks ok.
Bottom Line:
I've switched to this from a stock LX/strongarm2 combo,because i felt it flexy and something "elastic",and i've founded it to be a big improvement:i've gained a much better power transfer,a smoother and more solid feeling,due to the combination of the hollowtech crankarms and oversized splined axle.The cranks/axle connection relies on a much extended surface;the splined zone ,along with a slightly tapered one behind it, and the larger diameter bolts make for a stable,strong fit between the parts.The bearings also spin free under load ,due to the extra stiff non-flexing axle,and the crank bolts no more get loose.So the bottom line is:the octalink standard is inherently superior to the older one,and the DEORE does probably the same good job as the more expensive LX/XT at a lower price.
Similar Products Used: SHIMANO LX square taper,it was flexy and the crank bolts were always coming loose in the longtime despite of locktight ,but i didn't manage to snap it in two as other bikers did.
Submitted by
Jason Dreimanis
a Weekend Warrior
from Adelaide, SA, Australia
Date Reviewed: March 23, 2002
Strengths: - New features of Deore now include hollow spindle AND Octalink.
Weaknesses: - Mine only came with a nylon end cap.
Bottom Line:
First of all, I didn't have any troubles fitting this BB, but I only managed to get one with a nylon end cap, so it's not as durable as some higher end BBs.
Two great things are that the axle unit is a hollow cromoly design, so is strong, and it includes Octalink. This last feature makes the whole crankset that much stiffer.
Overall, ISIS and XTR style BBs may have a slight edge, but they are in a different price bracket, so the Deore BB certainly wins on value.