Results 1 to 10 of 10
  1. #1
    I should be studying...
    Reputation: frank daleview's Avatar
    Join Date
    Jan 2004
    Posts
    816

    New question here. Shimano XT vs. XTR disc brakes?

    I'm using the old 755 brakes and selling them off to get a new set of brakes. What's the difference between the new XTs and XTRs?

  2. #2
    Chrome Toaster
    Reputation: Hecubus's Avatar
    Join Date
    Jan 2004
    Posts
    2,850
    The new ones are considerably lighter. I think well over 200 grams for the XTR's. Besides that the dual large pistons should tend to jam less than the smaller quad pistons in the old caliper.

  3. #3
    just along for the ride
    Reputation: Brown_Teeth's Avatar
    Join Date
    Jan 2004
    Posts
    3,037
    The '04 are nice, like the hope minis nice single piece casting and the splined hubs saves weight too. Problem is you need a new wheelset... Otherwise I like mine, easy set-up and take your time on the bleed. Hoses are super light too. Very easy to cut. We will see what father time has to say.

  4. #4
    Lightweight Ghost Rider
    Reputation: Knut's Avatar
    Join Date
    Jan 2004
    Posts
    191
    No need for new wheel set - keep the current set and run Magura Martha SL, Hope Mono, Shimano XT (old), A2Z Teppan Yaki or some other 160mm 6 bolt rotor with the new XT or XTR calipers...

  5. #5
    I should be studying...
    Reputation: frank daleview's Avatar
    Join Date
    Jan 2004
    Posts
    816

    New question here.

    Thanks for your input guys. I was curious as to do the difference between the new XTs (not the 4 pot brakes) vs. XTRs.

  6. #6
    mtbr member
    Reputation:
    Join Date
    Jan 2004
    Posts
    730
    The XT calipers are a little heavier and a little more material too them, the pads are the same, and the pistons are also the same size IIRC. So unless you are going to build a superlight race bike XT would be a better choice on price.

    XTR weigh 98g front 101g rear
    XT weigh 163g front 170g rear but these come in post mount only so this includes the weight of the adapter, I wouldn't be suprised if the caliper were no more than 10g or so different.

  7. #7
    just along for the ride
    Reputation: Brown_Teeth's Avatar
    Join Date
    Jan 2004
    Posts
    3,037
    The resin pads are way more friendly and quiet but no where near the power of the metallics. If I was racing metallics would be the call cause you can brake way later, but for everyday riding the resin modulate better w/o the noise matallics make. Overall I'm stoked on the '04 XT, very nice brakes well worth the upgrade.

  8. #8
    Numerous wiring problems.
    Reputation:
    Join Date
    Mar 2004
    Posts
    86

    Idea! Tried copperslip?

    Quote Originally Posted by Brown_Teeth
    The resin pads are way more friendly and quiet but no where near the power of the metallics. If I was racing metallics would be the call cause you can brake way later, but for everyday riding the resin modulate better w/o the noise matallics make. Overall I'm stoked on the '04 XT, very nice brakes well worth the upgrade.
    Agree that the metallics have more bite than the resin with both '04 XT and Saint. I had squeaking too, but a dab of copperslip - automotive, very high melting point, copper-based anti-squeal grease - seems to have sorted that out. Might be worth a shot.

  9. #9
    Chrome Toaster
    Reputation: Hecubus's Avatar
    Join Date
    Jan 2004
    Posts
    2,850
    I found the shimano metalic pads to be one of the quieter ones I've tried. You can hear the typical grind when they bite but they don't howl unless they are wet. Even then the howl will go away quickly as they heat up. My Hayes and Hope Mini's had more howling under similar conditions. The resins are ok but I find they simply don't provide the braking power I'd expect from a disc brake.

  10. #10
    just along for the ride
    Reputation: Brown_Teeth's Avatar
    Join Date
    Jan 2004
    Posts
    3,037
    The metalics are stronger stoppers no doubt but I think they generate way more heat and can contribute to rotor warping and more vapor locking. I do notice with the metalics after a hard downhill section they tend to squeek especially under 5 mph. Over 5 and they quiet down probably due to the rotor design to cool the pads? I'm hoping the resin will get stronger after a few rides otherwise back to metalics for me squeaks be damned

Similar Threads

  1. Shimano XT disc brakes - Is this possible?
    By Earthdog in forum Brake Time
    Replies: 12
    Last Post: 11-05-2004, 02:51 PM
  2. Tuning up XTR disc brakes - pads etc. ??
    By rpbt in forum Brake Time
    Replies: 1
    Last Post: 06-05-2004, 09:26 AM
  3. SJ 04 XT Disc Brakes or XTR
    By Steve Eungblut in forum Specialized
    Replies: 3
    Last Post: 04-14-2004, 12:05 AM
  4. shimano xt disc ??'s
    By fl jay in forum Brake Time
    Replies: 3
    Last Post: 04-02-2004, 06:10 PM
  5. Ahoy! V-brake holdouts!
    By Padre in forum Singlespeed
    Replies: 29
    Last Post: 03-23-2004, 09:06 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •