New Fat fan looking for advice on size, frame preference


New member
Hi, I'm getting more and more interested in a Fat purchase after 15 years of hardtails. I've owned several "cult" bikes - 2 Bontrager Racelites, an Ibis Mojo and 2 Ibis Alibis, one of which is my current ride, which by the way is a great bike. My question is what size and which frame? I can't seem to find frame dimensions anywhere on the web. My current Alibi fits perfectly, their medium, 71/73, 23" tt. I'm not sure if I need a Fat M or M/L, I'm 5'11", 32" inseam. I'm even considering going rigid (!). My rides are mostly these days asphalt with the kids and relatively tame singletrack/fire roads. Is it a Yo or will I be happy enough with a Buck if the M fits me? Sorry for the wordiness but it seems Fat people are this obssessive about their bikes. Thanks.

forest warrior

New member
aloah clubted

chk this for frame specs

about which model...well...the yo is THE single-track frame to go :)
buckshaver n monster aren t as light buy also great rides.

many ppl like also the wicked cause it s more stable at high-speed.

well, i guess u will get more replys soon ;)

happy trails

e.p.s: ...nice stuff u got already, i never ridden a ibis but know some bontragers. i would say the yo is the closest of the fat-family to them.


New member
I've ridden both M & ML fat tis & Yos. For your height I'd say the ML. However if you dont need the stretch & want a relazed more upright position then go for a Med. (germany) has had a few bargain Yo eddys sell fairly low recently!



Doug Carter

Global Moderator
Staff member
Based on your height and inseam (same as mine), the M/L Yo Eddy is what I rode and am again looking for. You also might consider a Wicked Lite, which would be an 18" frame size.

Good luck and welcome,



New member
What size Race Lite did you ride? I ride a Large (17") Race Lite and it fits very similar to a Fat ML. The geometry is different, but if you're comfy on a large Bonty, the ML will work well.


New member
you could go w/ the medium. it will fit slightly tighter than the mojo mostly because the head tubes on fats are shorter.
wheelbase on a medium yo will be the same as on a medium mojo: 41.5.
i follow the rule: slightly larger fit w/ road bikes and slightly shorter w/mtbs.

on the wicked you would fit a 19.5. for the riding you are planning, the wicked is perfect. it's an all around bike w/ a roadish, comfy tubeset but it's geometry handles wood trails like magic.
Last edited: