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Shimano FC M770

MSRP $
# of Reviews 5
Average Rating 4.4/5
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Description:
  • HOLLOWTECH ll Crankset
  • Steel/carbon composite construction and middle gear doubles durability.
  • Thicker and stiffer 44T ring.
  • Amazing shifting performance


  • Where To Buy

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    Cambria Bicycle Outfitters


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    Submitted by lowflier03 a Weekend Warrior from Atsugi, Japan
    Date Reviewed: November 9, 2008
    Favorite Trail:Fujimi
    Duration Product Used:6 months
    Price Paid: $210.00
    Purchased At:LBS
    Strengths:Cranks are nice and light compared to most of the others out there. Extremely stong, no flex, very smooth.
    Weaknesses:none
    Similar Products Used:Truvativ Blaze, FSA's, Shimano Deore.
    Bike Setup:'07 Stumpjumper FSR Elite, XTR groupo, XT cranks, Bomber 140mm fork, King Headset
    Bottom Line:For the price I paid for these cranks, they are unbeatable. Every other set of cranks I have used I could feel flex during hard climbs. A few hard shifts caused bent chainrings on Truvativ. These XT's are light, stiff and definitely hold up to alot of abuse. Get these cranks! You won't be disappointed.
    Value Rating:5Overall Rating:5

    Submitted by justjoshnya a Cross Country Rider from
    Date Reviewed: October 9, 2008
    Favorite Trail:Four Winns, Lake of the Ozarks State Park
    Duration Product Used:1 Year
    Price Paid: $240.00
    Purchased At:Oz CYcles
    Strengths:Stiff. Light. Strong. Good shifting and long lasting chainrings. good bearings, spins with light resistance.
    Weaknesses:bottom bracket seals. water and mud got into mine after a super wet spring and ruined the bearings. However from wat I have read elswhere this is an atribute of all brands of externall bottom brackets. Thats OK it sure makes a noticeable difference in stiffness and the bottom bracket cups are cheap
    Similar Products Used:LX and deore 3 piece splined.
    Bike Setup:Custom built 08 trek fuel ex 8 with full xt drivetrain
    Bottom Line:Killer crank for the dough. Shimano makes the best chainrings by far. THe only other crank i would own would be xtr, if I could afford it.
    Value Rating:5Overall Rating:5

    Submitted by mtnbiker guy a Weekend Warrior from CDA, ID, USA
    Date Reviewed: July 8, 2008
    Favorite Trail:28
    Duration Product Used:6 months
    Price Paid: $182.00
    Purchased At:ebay
    Strengths:light weight, excellent power transfer to rear wheel
    Weaknesses:Klunks even after the lbs honed the bb shell and installed it for me. It is nerve racking when hammering to have the bottom bracket klunking. It is loud enough that my friends ask me what is wrong with my bike.
    Similar Products Used:older XT, LX, STX Cranks, Suntour cranks, race face
    Bike Setup:2006 stumpjumper fsr pro, fox suspension front and rear, XTR shifters and deraileurs, XT crank, Chris King headset, front and rear Chris King hubs laced to dt Swiss 4.1d rims, avid juicey carbon brakes
    Bottom Line:I would be completely satified with this crank if I could get it to shut up will peddling under load (granny gear) on long steep grinds. Honing the bottom bracket was useless and shimano has turned off their email tech support line. I am thinking of replacing it with a different crank (older XT/XTR or different brand) because of the klanking problem. Would not recommend this product.
    Value Rating:2Overall Rating:2

    Submitted by Gwynn a Cross Country Rider from Laguna, Philippines
    Date Reviewed: February 20, 2008
    Duration Product Used:3 months
    Price Paid: $250.00
    Purchased At:BIKEHUB
    Strengths:Weight & Design
    Weaknesses:None so far observed
    Similar Products Used:truvativ
    Bike Setup:Santa Cruz Bullit
    Bottom Line:i...

    hammer it always
    am guilty of mis-shifts
    soak it on river crossings
    let mud harden on it

    and...

    its still working well...complete teeth, no squeaks!
    best buy so far!!!
    Value Rating:5Overall Rating:5

    Submitted by Bobby a Cross Country Rider from Raleigh, NC, US
    Date Reviewed: January 19, 2008
    Favorite Trail:beaver dam
    Duration Product Used:Less than 1 month
    Price Paid: $270.00
    Purchased At:Trek Bikes Of Raleigh
    Strengths:Very stiff, super smooth, shifts well
    Weaknesses:none
    Similar Products Used:lx, deore
    Bike Setup:Gary Fisher wahoo with xtr and xt
    Bottom Line:Shimano took care of the middle chain ring problem, this one is made of a blend of alloy and aluminum. This crankset is incredibly stiff. It spins very smooth. So far I have had no problems at all with them. I would definitly recommend that you take a look at them.
    Value Rating:5Overall Rating:5






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