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Formerly DMR For Life
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Discussion Starter · #1 ·
well
i'm looking at possibly getting some disks for my bike...BB7 to be exact and was wondering what the largest rotor i should put on a bike with QR dropouts?
thanks
DMR
*EDIT* i'm 200lbs and ride all-mountian/light freeride
 

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Meh.
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17,508 Posts
DMR For Life said:
well
i'm looking at possibly getting some disks for my bike...BB7 to be exact and was wondering what the largest rotor i should put on a bike with QR dropouts?
thanks
DMR
*EDIT* i'm 200lbs and ride all-mountian/light freeride
I ran 8 inch rotors on my tuned Marzocchi Drop-Off Comp with QR for a season with no problems. I think I was starting to bend/twist that leg though. I know 8 inch rotors would crack the disc tabs/dropouts on Fox forks made prior to 2004. 8 inch rotors always felt fine on my QR Sherman Firefly.

But there are always those people out there that say it can't be done... And most fork manufacturers don't recommend it.
 

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Freshly Fujified
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8,199 Posts
6" or 7" max

DMR For Life said:
would the fact that its a MX Comp reduce the size i can run?
i was thinking of 7inch rotors
DMR
Legaleze on Marzocchi's manuals will basically tell you that their XC forks should run no larger than 6", but you can get away with a 7" so long as you realize you might void the warranty. I'm running 7 " on a Marzocchi Marathon S and have had no issues.
 

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meh....
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Call_me_Clyde said:
Legaleze on Marzocchi's manuals will basically tell you that their XC forks should run no larger than 6", but you can get away with a 7" so long as you realize you might void the warranty. I'm running 7 " on a Marzocchi Marathon S and have had no issues.
And just remember that "void the warranty" might mean breaking the dropout or caliper tabs off the fork.

Monte
(8" rotor on a 2004 TALAS for a year, haven't "voided the warranty")
 

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Ran 8" on a XFly for 4 years with zero issues. I think a fair bit depends on the kind of riding you do. I doubt you'd have an issue with the type of riding you do.
 
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