Shimano FC M770 Crankset

4.5/5 (6 Reviews)


  • Store Price

Product Description

  • HOLLOWTECH ll Crankset
  • Steel/carbon composite construction and middle gear doubles durability.
  • Thicker and stiffer 44T ring.
  • Amazing shifting performance


  • Review Options:  Sorted by Latest Review | Sort by Best Rating

    Reviews 1 - 6 (6 Reviews Total)

    User Reviews

    Overall Rating:5
    Value Rating:5
    Submitted by b0mb3r a Cross Country Rider from newark de

    Date Reviewed: June 9, 2011

    Strengths:    Stiff, smooth, well made, great shifting, light and strong. If properly installed, the bottom bracket will last forever.

    Weaknesses:    none

    Bottom Line:   
    These cranks are great, I doubt that you will find a better setup for the price. I rode them on my geared and single speed and they do not flex whatsoever. One thing to keep in mind is that you need to install bottom bracket cup spacers. Those spacers ensure that the bottom bracket is properly sealed. I also packed mine full of phil wood grease, before sliding in the cranks. After two years of riding, there was no dust in the bottom bracket and the bearings still roll smooth. I also suggest putting some teflon tape on the bottom bracket threads so the cups don't loosen up (that happened to me and they began to creak).

    Expand full review >>

    Favorite Trail:   middlerun

    Duration Product Used:   2 Years

    Price Paid:    $210.00

    Purchased At:   performancebike

    Similar Products Used:   Shimano Saint FC810, Shimano LX FC550

    Bike Setup:   KHS Team ST, Fox F100

    Overall Rating:5
    Value Rating:5
    Submitted by lowflier03 a Weekend Warrior from Atsugi, Japan

    Date Reviewed: November 9, 2008

    Strengths:    Cranks are nice and light compared to most of the others out there. Extremely stong, no flex, very smooth.

    Weaknesses:    none

    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.

    Expand full review >>

    Favorite Trail:   Fujimi

    Duration Product Used:   6 months

    Price Paid:    $210.00

    Purchased At:   LBS

    Similar Products Used:   Truvativ Blaze, FSA's, Shimano Deore.

    Bike Setup:   '07 Stumpjumper FSR Elite, XTR groupo, XT cranks, Bomber 140mm fork, King Headset

    Overall Rating:5
    Value Rating:5
    Submitted by justjoshnya a Cross Country Rider

    Date Reviewed: October 9, 2008

    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

    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.

    Expand full review >>

    Favorite Trail:   Four Winns, Lake of the Ozarks State Park

    Duration Product Used:   1 Year

    Price Paid:    $240.00

    Purchased At:   Oz CYcles

    Similar Products Used:   LX and deore 3 piece splined.

    Bike Setup:   Custom built 08 trek fuel ex 8 with full xt drivetrain

    Overall Rating:2
    Value Rating:2
    Submitted by mtnbiker guy a Weekend Warrior from CDA, ID, USA

    Date Reviewed: July 8, 2008

    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.

    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.

    Expand full review >>

    Favorite Trail:   28

    Duration Product Used:   6 months

    Price Paid:    $182.00

    Purchased At:   ebay

    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

    Overall Rating:5
    Value Rating:5
    Submitted by Gwynn a Cross Country Rider from Laguna, Philippines

    Date Reviewed: February 20, 2008

    Strengths:    Weight & Design

    Weaknesses:    None so far observed

    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!!!

    Expand full review >>

    Duration Product Used:   3 months

    Price Paid:    $250.00

    Purchased At:   BIKEHUB

    Similar Products Used:   truvativ

    Bike Setup:   Santa Cruz Bullit

    Overall Rating:5
    Value Rating:5
    Submitted by Bobby a Cross Country Rider from Raleigh, NC, US

    Date Reviewed: January 19, 2008

    Strengths:    Very stiff, super smooth, shifts well

    Weaknesses:    none

    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.

    Expand full review >>

    Favorite Trail:   beaver dam

    Duration Product Used:   Less than 1 month

    Price Paid:    $270.00

    Purchased At:   Trek Bikes Of Raleigh

    Similar Products Used:   lx, deore

    Bike Setup:   Gary Fisher wahoo with xtr and xt

    Reviews 1 - 6 (6 Reviews Total)

    Review Options:  Sorted by Latest Review | Sort by Best Rating

     




    Interbike - Trade Show Booths

     

    Videos



     

    MTBR on Facebook