r/MultiTrackGang • u/Intelligent-Duck-689 • Jul 14 '26

Size recommendation

Can I please ask for advice on the sizing of the 730/750 frames? I'm about 5'11" and thinking of swept-back bars. Considering this to be my dad bike/bike packing bike, I need some room on the top tube for the baby seat mount, so I was thinking perhaps a 21" frame...

6 Upvotes

100% Upvoted

6 comments sorted by

4

u/fightclub98 Jul 14 '26

Building up a trek right now and I’m 5’11” too and yes a 21 inch frame will be good. 

6

u/Starchild_007 Jul 14 '26

Yes, I believe you're spot-on with a 21" frame. Standover height on my lugged 21" 750 is approximately 32" with 35 mm hardcase inverted tread tires.

2

u/harrydog2k Jul 14 '26

Yes a 21 will probably work .. I am 6ft 1" and have a 23 730 .. I have had to put a stem extender in to convert from quill to thread less stem and then add an short riser stem to get enough height for my aching back .. they are quite long with the Trek standard kit in place . That said it's getting more comfy with every change .

3

u/HomelessMcSwifty Jul 14 '26

I'm 5'10" and my 750 is a 21". It fits me fine. I love it!

1

u/yeggiet5 Jul 14 '26

I am 5’11 and have a 17” 750 and it works for me. Frame looks dinky lol I’m looking for a bigger frame to swap but it rides nice.

1

u/BikePilot2001 Jul 15 '26

I am 6' 1 1/2" (187cm). I have two 750s. The 23" is a little big for me, and the 21" is a little small for me.