Sizing: 5'10, 31.5" inseam. 225lbs. 5-Spot Medium or Large?

I'm pretty much the same as you (5'10" with 31" inseam) and settled on a Med. I can't comment about the large since I never tried one. I use a 90mm stem and for me it's just about perfect!

good luck!!

Medium

I'm thinking medium. I'm an inch or so taller than you, also in the inseam and ride a large 5 Spot - it feels good, but on the large side. It's great for epics, long climbs and fast blasts downhill, but feels a little big on the twisty stuff and leaves me wishing I'd tried a medium as well before making my decision, although I think it would be too cramped.

The only probs I could see with a medium for me are that I'd need a LOT of post exposed, and a stack of spacers under the stem to get the bar height correct. The large "looks" right for me in those respects.

Remember also that the 5 Spot has a relatively steep seat tube - so it can feel shorter than it actually is once your saddle is at the correct height.

Nick

5'9 3/4", 32"

I ride a medium with a 90 mm stem and a straight post. I have thought about putting my 100mm stem on, but honestly it's a great climber as it is. Standover is good and while I'm not stretched out I feel very comfortable when the going gets rough.

5' 10", 30.5 standover (32" pants inseam)

I ride a medium with a 100mm stem and it fits me perfectly. A medium will have a shorter wheelbase than a large, which helps on the tight twisty stuff, and more standover clearance, which was my primary concern. I rode a medium Racer X before and had zero clearance between the tube and my boyz. I've got about an inch of clearance with the Spot. Much more comfy

Travis Bickle said:

I ride a medium with a 90 mm stem and a straight post. I have thought about putting my 100mm stem on, but honestly it's a great climber as it is. Standover is good and while I'm not stretched out I feel very comfortable when the going gets rough.

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I'm with Travis - height and bike size that is - for both my Spot and O2. I run a slightly longer stem on the O2. Both feel great.

yet another recomemndo for medium

5'10 32" 90mm stem. The bike feels compact and agile which is something I like. Had to use a long post, l want to say it was a 430 (Thomson).

I went with Large...

I'm 5'10", 210 lbs. I went with the Large. I generally ride large bikes though. I'm running 100mm stem with Thompson setback (bent-looking) seatpost. I am VERY happy with this size. Med definately would have been too small for my size/style.

Totally get a Coil sprung for, (Fox Vanilla I recommend).

pcormier said:

I'm 5'10", 210 lbs. I went with the Large. I generally ride large bikes though. I'm running 100mm stem with turner setback (bent-looking) seatpost. I am VERY happy with this size. Med definately would have been too small for my size/style.

Totally get a Coil sprung for, (Fox Vanilla I recommend).

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wow...just goes to prove that choosing size mostly depends on the riders riding preferences!

Just like last night, I'm still undecided as whether to go large or medium.
Consensus here says go medium. Will go back up to the lbs tomorrow and try out the large again. Wish they had medium...

wow...just goes to prove that choosing size mostly depends on the riders riding preferences!

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No kidding Im 6 ft with a 33.5 in inseam. Im riding a large spot with a 130mm stem.

After much consideration, I'm going with the large frame.

Large

Hey bro--sorry I couldn't post this earlier, but don't fret about not trying the medium. I am about a half inch shorter than you, and I ride a large. I ride really technical ascents/descents, squirrely stuff, and cross-country. I came from a 19" sugar, so I was concerned w/being too cramped up on my new 5 spot. I also wanted to use a short stem for more control, which i'm able to do on the large. the standover is a bit high, but absolutely not a problem. The large does everything the sugar did on ascents and kicks its ass on the DH. The large is the way to go. good luck, and congrats on getting the best trail bike ever made! Welcome to the family...
Phoenix Matt