FSA Gamma Drive Megaexo Crankset

Available At:
Gamma Drive Megaexo

-Integrated MegaExo BB
-AL356 cast aluminum crank arms
-AL7075/T6 stamped outer chainring, ramped and pinned for perfect shifting
-Heat-treated chromoly middle chainring, ramped and pinned
-Heat-treated chromoly 22 tooth inner chainring
-Chromoly chainring bolts
-MegaExo oversize cartridge bearings
Oversize OTTO splined (8T) integrated chromoly BB Axle
-MegaExo alloy bearing cups
-Length - L170mm or 175mm
-Q-Factor - 170mm
-104/64mm bolt circle diameter
-Chainrings - 44/32/22T
-Chainline - 48mm
-68 or 73mm BSA BB shell size
-1130 grams (w/bb)

User Reviews (10)

Showing 1-10 of 10  
pamatte   Cross Country Rider [May 25, 2010]
Strength:

Carbon is strong. First year of the FSA crank was great. Once I hit 1000 miles, the squeaking started.

Weakness:

Squeak! Squeak! Squeak!

FSA just does not cut it. They cannot get it right. Even with the washer that is supposed to fix it all. It did not work.
Time to get a lighter Shimano.

Similar Products Used: Shimano Ultegra
OVERALL
RATING
1
VALUE
RATING
2
Available At:
powerpantz   Weekend Warrior [Jun 13, 2009]
Strength:

Easy to take apart... over.... and over......, and over again.
External bearings and uhhhh, you can attach a bash guard, but they weigh more than the large chain ring.

Weakness:

The thing weighs a ton and make a terrible squeaking/creaking noise when you pedal it and even when you pedal backwards. Apparently it isn't fixable or available for warranty claim. I tried everything, wasted hours searching the whole bike for the source of the annoying sound and came up with nothing but the same damn metallic squeaking noise from the crank/bottom bracket. 19 mm FSA BB1000 (bottom bracket) doesn't match any other crank spindles, this thing is an avoid at all costs piece of crap. FSA is hard to deal and won't back up their product. Had to replace small cog within one year because it was causing chain to stick.

Never pay for this - do not accept it on your bike. Absolute crap. You can find more reliability anywhere.

AVOID

Similar Products Used: Shimano.
OVERALL
RATING
1
VALUE
RATING
1
Øyvin Eikeland   Weekend Warrior [May 28, 2008]
Strength:

Easy to disassemble

Weakness:

Weak bearings (Left bearing broke after 8 months)
Heavy

I use my bike to and from work and occasionally take a trip in the forests of Trondheim. This crank came with my bike and has lasted less than a year of very mild abuse. I should have taken it back to the shop for a replacement, but decided I should rather upgrade to something decent. The 19mm spindle is not compatible with any other bearing on the market. I then had to choose if I wanted another (crap) Gamma Drive bearing, or if I should get a complete new crank-set. I just installed a brand new Deore XT set, which is 300g lighter. If the new Shimano crank is anything like the one on my former bike, I am sure it will :)

I can only recommend this product if you would actually like to go shopping for a new crank in the very near future (Who wouldn't? ;)

Similar Products Used: Shimano Deore XT anno 1997. Never had a problem with that one. Still works like a clock.
OVERALL
RATING
1
VALUE
RATING
2
Available At:
Marcin Sylwestrowicz   Cross Country Rider [May 08, 2008]
Strength:

im not sure if any

Weakness:

Its heavy, squeaky after rain, lame and powerless

I never realised how lame it is before i changed it...
It needs to service it after every ride in rain of it squeak
After 2 seasons it started squeaking all the time...

It is soft and weak.

Similar Products Used: Truvativ Firex Team 3.3
OVERALL
RATING
2
VALUE
RATING
2
Eric   Cross Country Rider [Jul 25, 2007]
Strength:

Looks nice, external bearing bottom bracket.

Weakness:

Are designed so that a pedal wrench is a requirement to install pedals, if one is not used it will feel as if the pedals are tight when they are not. Middle crank ring also won't fit shimano cranksets with out some grinding.

Seemed like a good crank when I got it, but the pedals mounts got fubar'd because of the weakness mentioned above. I've known more than just me that have had this problem.

If it comes on a bike that is assembled from a shop, check before you leave, but I wouldn't buy them aftermarket.

Similar Products Used: Shimano
OVERALL
RATING
1
VALUE
RATING
2
Available At:
James Jordan   Weekend Warrior [Mar 09, 2006]
Strength:

cost; and can take a beating with the trails and with the torque wrench

Weakness:

in reality, none.

You will not beat these cranks for the money if they are on your bike from the shop. Get yer legs, then sort out the upgrades. You CAN torque the pinchbolts on the L arm to keep it from creaking; lithium grease all the loaded points and they will last; 19mm spindle has it's drawbacks, but c'mon,... whast you see is what you get.

Similar Products Used: had a set of LX Shimano cranks back in 1994...
OVERALL
RATING
5
VALUE
RATING
5
BRIAN POMEROY   Weekend Warrior [Sep 30, 2005]
Strength:

STIFF CRANKARMS, EASY REMOVAL, STRAIGHT SPIDER AND RINGS.

Weakness:

CRANKARM REMOVAL A LITTLE TOO EASY IF PINCH BOLTS ON NON DRIVE AREN'T TORQUED DOWN BIGTIME. HEAVY AS @#%&*. DRIVE SIDE BEARING LOOSENED UP AFTER 20 MILES, NEVER HAD SHIMANO DO THAT IN 15 YEARS!!!

NOT CHEAP ENOUGH TO JUSTIFY HIGH MAINTENANCE THUS FAR. THE COMPETITORS: SUGINO, SHIMANO, AND TRUVATIV HAVE BETTER FOR LESS $$$$ THE HIGH END FSA STUFF LOOKS BULLETPROOF N LIGHT(DIFFERENT MATERIALS AND LAYOUT). BEST OF LUCK. ASK THE SHOP TO SWAP IT. WHO SHOULD BUY IT? DARNED IF I KNOW. WHO SHOULD STAY AWAY? DIRT JUMPERS, HUCKING DOWNHILL, SLALOM ETC. ANYBODY WHO LIKES HAVING FUN ON 2 WHEELS FOR THAT MATTER.

Similar Products Used: SHIMANO, ISIS, PROFILE SPLINE TYPE.
OVERALL
RATING
2
VALUE
RATING
2
Available At:
Greg Jones   Downhiller [Feb 12, 2006]
Strength:

they hold pedals ok...

Weakness:

the left side crank arm torqued after the first ride. i have watched my freind torque 3 different sets of them.

these cranks torque....and that is not good.

OVERALL
RATING
1
VALUE
RATING
1
Austin   [Oct 13, 2007]
Strength:

It hasn't failed yet. It is incredibly stiff and strong.

Weakness:

The bottom bracket tends to tear itself apart - starting with the little plastic cups that 'shield' from dust/dirt/etc. They're also incredibly heavy, however, a lot of that weight, as I found, lies in the chainrings. Rated for XC.

If you get it on your bike at the shop, it's great for an entry level crankset. However, as an upgrade or replacement, I wouldn't buy another. It is immensely heavy for a XC crankset, but these other reviews don't do it justice, I feel. Also, having pulled off the small and large chainrings, it feels far lighter.

Similar Products Used: Shimano Deore.
OVERALL
RATING
4
VALUE
RATING
4
Available At:
nick   Cross Country Rider [Jul 03, 2006]
Strength:

Bends like blades of grass. (I'm 140lbs)

Weakness:

BB still holding up.

Bent them twice. First the left side, on a small drop. I never crashed when it bent. Figured it was a fluke. Got a replacement. Month later I bent the drive side into the frame hopping a 6" log. Never crashed. These are the worst cranks I have ever used. I guess they'd be okay if you were 70 pounds and never so much as went over a curb.

Similar Products Used: Race face, shimano
OVERALL
RATING
1
VALUE
RATING
1
Showing 1-10 of 10  

THE SITE

ABOUT MTBR

VISIT US AT

mtbr.com and the ConsumerReview Network are business units of Invenda Corporation

(C) Copyright 1996-2018. All Rights Reserved.