Hayes Hayes MX4 (OEM Only) Mechanical Disc Brake Caliper Disc Brake System

3.71/5 (41 Reviews)


Product Description

Hayes MX4 (OEM Only) Mechanical Disc Brake Caliper
  • Entry level disc brake
  • Compression spring for lower lever effort and smooth action
  • Outer thrust bearings
  • Multiple bearing ball ramp system for smooth feel
  • 2 piece die cast body with stiffening bridge bolts
  • For use with V6 or 6 inch round rotor
  • Weight: 325g
  • Color: Black


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

    Reviews 1 - 15 (41 Reviews Total) | Next 15

    User Reviews

    Overall Rating:1
    Value Rating:1
    Submitted by david kettlewell

    Date Reviewed: October 26, 2013

    Strengths:    Junk. Been a bike mechanic and can restore motorcycles to new condition. this brake is definitely not a keeper...i ride every day in everything, snow, rain, sleet, hot weather...they squeal all the time, take constant adjustment and are not a good brake. The strength is you can throw them away.

    Weaknesses:    nothing more to add

    Bottom Line:   
    o on a 10 scale

    Overall Rating:3
    Value Rating:4
    Submitted by Joey

    Date Reviewed: June 21, 2013

    Strengths:    reliable breaking system on on road or off road | on downhill or on flat, last for a bout 2years on a weekend warrior, on a semi annual epic, long distance biking like 400KM in one trip.


    Weaknesses:    difficult to look for a replacement break pad | mostly not available on local store | sometimes out of stock.

    Bottom Line:   
    nice breaking system, easy to align the wheel when removing and fixing it back due to one side breaking system.

    -by 09173286398
    thephilippineoutdoorrampage.blogspot.com

    Overall Rating:2
    Value Rating:3
    Submitted by Ken a Cross Country Rider

    Date Reviewed: November 5, 2012

    Strengths:    Good stopping power and very affordable

    Weaknesses:    When wet they squall and the smooth stopping goes way down, it's either no stop or locked up. The caliper only squeezes from 1 side, and the pads are hard to find.

    Bottom Line:   
    It's an ok brake for your commuter bike or super light trail riding. Would definitely not recommend for any sort of upgrade.

    Expand full review >>

    Duration Product Used:   3 years


    Overall Rating:1
    Value Rating:1
    Submitted by Squeaky Brakes a Weekend Warrior from portland, oregon USA

    Date Reviewed: January 27, 2012

    Strengths:    No complaints about stopping power. Many complaints about everything else.

    Weaknesses:    Even when adjusted and lubed the best possible way these brakes drag. The piston is sticky and only pinches from one side. It works by deflecting the disk toward a stationary pad on the other side. Cheap to make and crappy to use.

    Bottom Line:   
    Like many of the other commenters have noted these brakes squeak loudly, especially when wet, which is all the time if you live in Oregon. Because they drag/squeak all the time, you HATE them ALL THE TIME. At least you get a better workout when you ride because the brake pad that moves is always in contact with the disk no matter how much you fiddle with it.

    This caliper came on my wife's mid to low-pricepoint Kona and I wish they had cut costs elsewhere because this brake is just terrible. Did I mention that it drags and is LOUD as hell?

    Don't ever buy one of these or, if someone attempts to give you one, don't accept. Don't pick one up if you see one on the ground, just walk/ride on by. When I replace this one, I'm going to smash it with a hammer.

    Expand full review >>

    Favorite Trail:   the trail I'm on right now.

    Duration Product Used:   1 Year

    Purchased At:   Bike Gallery Portlan

    Similar Products Used:   Shimano V brakes and other hydraulic and mechanical disk brakes.

    Bike Setup:   commuter

    Overall Rating:2
    Value Rating:2
    Submitted by bdr a Cross Country Rider from bude

    Date Reviewed: August 8, 2011

    Strengths:    good stopping power. good for on road on a dry day (otherwise makes a horrid sound)

    Weaknesses:    nightmeare to maintain the rear brake is always locking up i have tried oiling it but it still seems to screw up !.one night i was out riding and suddenly my rear brake faild i thought it would be a simple fix so when i got home i took of the rear wheel and thats when i discoverd the magnet from the rear brake all over the disk and tail of the bike it is not the easyest part to get you'r hands on eather so now i have to buy a new set of brakes and i can tell ya it wont be the hayes. i would not recomend thease brakes for off road users.when wet they make the most horrid noise !

    Bottom Line:   
    thease brakes can not take a good thrashing so thearefor i would not recomend thease to off road users but would moste likely be perfect for on road users.

    Expand full review >>

    Duration Product Used:   2 Years

    Price Paid:    $325.00

    Purchased At:   bidiford (brake's ca

    Similar Products Used:   none


    Overall Rating:3
    Value Rating:4
    Submitted by hihi a Weekend Warrior from saskatoon

    Date Reviewed: June 19, 2011

    Strengths:    good stoping power for the average rider easy adjustments

    Weaknesses:    very very loud when wet, can lose power at random.

    Bottom Line:   
    good for city and lite trail, dont get them wet or people will hear from a mile away

    Expand full review >>

    Favorite Trail:   many

    Duration Product Used:   1 Year

    Purchased At:   came on bike

    Similar Products Used:   v brakes


    Overall Rating:4
    Value Rating:4
    Submitted by merida496 a Cross Country Rider from Melbourne, Australia

    Date Reviewed: January 31, 2011

    Strengths:    Great brakes, easy to brake especially going downhill.

    Weaknesses:    makes a little bit of squealing noise.

    Bottom Line:   
    Great brakes easy to handle :)

    Expand full review >>

    Duration Product Used:   Less than 1 month


    Overall Rating:4
    Value Rating:5
    Submitted by soupper a Racer from Halifax, NS, Canada

    Date Reviewed: October 11, 2010

    Strengths:    They make the bike STOP! I've used these for almost 3 years now on my commuter setup (about 120k per week) I have only had to replace pads once. I'm not zipping down any death defying mountains with them but I can tell they sure come in handy on a rainy morning when a 50' multi-ton bus decides to cut you off when your at a decent speed. They are very easy to maintain.

    Weaknesses:    If properly maintained I wouldn't expect any problems. Keeping the rotors clean is half the battle.

    Bottom Line:   
    I wish I could convince every commuter to use discs, so much safer!

    Expand full review >>

    Duration Product Used:   2 Years

    Price Paid:    $50.00

    Purchased At:   cyclesmith / oem / p

    Similar Products Used:   I have put the same brakes on a beater I resurrected. And have mx2 version on a Norco Wolverine.

    Bike Setup:   2008 Kona Dew Plus, 2001 Kona Cinder Cone.

    Overall Rating:1
    Value Rating:3
    Submitted by gpic449 a Weekend Warrior from Danville, CA USA

    Date Reviewed: June 11, 2010

    Strengths:    Cheap

    Weaknesses:    Easy to break, bend its discs, starts making a weird noise in the first few days, dont buy.

    Bottom Line:   
    These brakes suck. If they come on your bike, dont be surprised if you break them. Never buy these if you are buying aftermarket parts because it is NOT worth it.

    Expand full review >>

    Duration Product Used:   3 months

    Purchased At:   Hank and Frank (alre

    Similar Products Used:   v brakes

    Bike Setup:   2010 Giant STP SS with DJ3 and Hayes MX$

    Overall Rating:4
    Value Rating:4
    Submitted by Oleg a Cross Country Rider from Russia

    Date Reviewed: May 21, 2010

    Strengths:    Low price, excellent fit to my bike, great work at cold winter ( i know what i am talking about i ride it at - 20 c )

    Weaknesses:    If u put calpiter not enofe paralel to rotor the stoping power will be low.

    Bottom Line:   
    Enofe stoping power for most of riders,good work at cold, but they cant stop u if u use only 1 finger so it not enofe for dh.

    Expand full review >>

    Duration Product Used:   More than 3 years

    Similar Products Used:   Avid Elixir 5, Tecro comp, Hope M 4.

    Bike Setup:   Custom titan frame

    Overall Rating:5
    Value Rating:4
    Submitted by Lajko a Weekend Warrior from West Seattle, WA

    Date Reviewed: March 15, 2010

    Strengths:    Nice, good breaking power, especially down our steep hills. Used for in-city riding in Seattle so shortly I'll know how they work when wet. Maybe not the best for the serious down-hiller, but perfect on my new K2-ZED 4.4 for inner city commuting. They came with the bike, on sale so it fit my budget of under $400 for a commuter bike.

    Bottom Line:   
    If you're a serious outdoorsman, maybe you wany something better. For in-city commuting in Seattle, they work just great. So much better than rim brakes.

    Expand full review >>

    Favorite Trail:   Green River, but now covered in sand bags

    Duration Product Used:   Less than 1 month

    Price Paid:    $1.00

    Purchased At:   Sports Authority

    Bike Setup:   K2 ZED 4.4

    Overall Rating:3
    Value Rating:3
    Submitted by norcorider95 a Weekend Warrior from London

    Date Reviewed: February 14, 2010

    Strengths:    works.
    easy to fix.
    looks good.
    seems light.


    Weaknesses:    Discs are so crap, im on my 3rd one (rear) but the front one has been perfect.

    Bottom Line:   
    good brakes for XC but not for downhill :S they work but hard to get in the right place. they either rub to much and work perfect or, dont rub and dont work.

    Expand full review >>

    Favorite Trail:   Swinley Forest

    Duration Product Used:   6 months

    Price Paid:    $12345678.00

    Purchased At:   Stock on bike.

    Similar Products Used:   urm none really, some basic shimano's

    Bike Setup:   Norco wolverine.

    Overall Rating:5
    Value Rating:5
    Submitted by X_er a Weekend Warrior from Newhall, CA USA

    Date Reviewed: October 15, 2009

    Strengths:    Easy to dial in and service. NO BLEEDING of a hydro. Awesome power. Nice modulation similar to a good hydro. Excellent for all mountain and x-country . . . my type of riding. These are far better than the Juicy hydros I had.

    Weaknesses:    Some squealing/noise after hard use due to heat. But after cooling, noise goes away . . . until the next long/fast decent.

    Bottom Line:   
    I would highly recommend these brakes . . . for their all-mountain and x-country performance to any body. Their value and performance can't be beat!! Go buy a set and get rid of those hydros.

    Expand full review >>

    Favorite Trail:   Any

    Duration Product Used:   3 months

    Similar Products Used:   Juicy 7


    Overall Rating:5
    Value Rating:5
    Submitted by cornt1989 a Cross Country Rider from Cleveland, OH

    Date Reviewed: October 10, 2009

    Strengths:    Stop on a dime!

    Weaknesses:    Loud when wet.

    Bottom Line:   
    These are my first disk brakes and I would never have thought that a bike can get stopped so fast. After reading other review I don't understand how much faster one can get stopped. These provide great stopping power that does not fade at all under any conditons or inclines. If set up right the only ajustments are turing the inner pad with an allen wrench, something everyone should have on a trail anyway. I have to say that I don't like how loud they are when wet, but the stopping power is absolutely unbeatable for coming standard on my bike.

    Expand full review >>

    Favorite Trail:   Asbury Woods Erie

    Duration Product Used:   3 months

    Similar Products Used:   V-Brakes

    Bike Setup:   KHS Tuscon 29er

    Overall Rating:5
    Value Rating:5
    Submitted by slogophobia a Weekend Warrior from Corvallis, OR, USA

    Date Reviewed: September 17, 2009

    Strengths:    great power, very smooth, quiet when dry, good modulation

    Weaknesses:    sqeaky when wet. cant buy them, only come on bikes.

    Bottom Line:   
    one of the best cable brakes i've ever used. minus the squeaking of course. i prefer them over the bb7's i have now. bb7's might be a bit more powerful but i just like the mx4's better.

    Expand full review >>

    Duration Product Used:   1 Year

    Purchased At:   came on 06 DB respon

    Similar Products Used:   hayes stroker ryde, avid bb7

    Bike Setup:   DB response sport, truvativ blaze, fsa bar and stem, avid SD7 levers, wellgo pedals

    Reviews 1 - 15 (41 Reviews Total) | Next 15

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