Bike Forums - View Single Post - Specialized hardrock...help!

06-05-15 | 01:03 PM

#4

Bill Kapaun

Really Old Senior Member

Joined: Feb 2007

Posts: 14,659

Likes: 1,898

From: Mid Willamette Valley, Orygun

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3

170 or 175mm is totally up to you.
It's the length of the arm.
Taller people use longer arms than shorter people.
I have a bad knee, so I use 165mm.
If you are under 6', you probably want the 170mm.

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