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  1. #1
    Senior Member budfan08's Avatar
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    quick disc brake ?

    Hey i have a 2006 trek 4500 with some new disc ready wheels and i am wondering if 185 or 203 mm rotors would fit on it? or do i have to go with 160 mm?

  2. #2
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    160mm rotors/caliper will pretty much be a bolt-on, minimal adjustments. 185 and 203 will require adapters to mount the calipers to the frame.

    Depending on your size and riding style, 160's may suit, or if your bigger/more aggressive, 185. 203 is pretty severe, most of the time.

    I ride a full-suspension bike, long-travel, with 185's f/r; had 203 on the front, but they were TOO strong for my needs (put me on my face 3x in hard stops, once breaking my collarbone). I'm 6'1", about 240, and ride almost daily.

    I recommend Avid BB7.

  3. #3
    Senior Member budfan08's Avatar
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    kk, im mostly gonna be doing xc riding but sometimes hittin some trails. Ill probably go with the 160s then. Im getting the bb7's, too good of a deal to pass up right now

  4. #4
    Reppin' the hacks crazyotte's Avatar
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    Chainlove.com your bb7s. Got a whole set for $70.

  5. #5
    one less horse cryptid01's Avatar
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    Quote Originally Posted by DX-MAN View Post
    had 203 on the front, but they were TOO strong for my needs (put me on my face 3x in hard stops, once breaking my collarbone).
    Clearly the rotor diameter was at fault. Good thing it only took you three face plants to realize how truly dangerous that extra 15mm in diameter really is - it could have been much worse!

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