2021 Trek Fx sport 4 geometry and sizing
#1
2021 Trek Fx sport 4 geometry and sizing
I bought a 2021 Trek Fx sport 4 carbon (new) in 2023 , to add to my n+1 which is a 2020 fx 3 and I always been confused about this generation fx sport carbon bike geometries. The Large Fx 3 bike, has a similar reach and stack to that of Medium 2021 Fx sport 4 carbon, why is the FX sport carbon (2021) one size larger almost for a given size ?
Is 2021 Fx Sport Carbon size Medium = Trek Fx 3 Large, interns of sizing ? I'm 6' feet tall and 32.5inseam
2021 Fx Sport 4 Carbon
https://www.trekbikes.com/us/en_US/b...ort-4/p/32262/
2020 Trek Fx 3
https://www.trekbikes.com/us/en_US/b...-disc/p/35021/
Is 2021 Fx Sport Carbon size Medium = Trek Fx 3 Large, interns of sizing ? I'm 6' feet tall and 32.5inseam
2021 Fx Sport 4 Carbon
https://www.trekbikes.com/us/en_US/b...ort-4/p/32262/
2020 Trek Fx 3
https://www.trekbikes.com/us/en_US/b...-disc/p/35021/
Last edited by Awesomeguy; 03-21-24 at 05:26 PM.
#2
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I bought a 2021 Trek Fx sport 4 carbon (new) in 2023 , to add to my n+1 which is a 2020 fx 3 and I always been confused about this generation fx sport carbon bike geometries. The Large Fx 3 bike, has a similar reach and stack to that of Medium 2021 Fx sport 4 carbon, why is the FX sport carbon (2021) one size larger almost for a given size ?
Is 2021 Fx Sport Carbon size Medium = Trek Fx 3 Large, interns of sizing ? I'm 6' feet tall and 32.5inseam
2021 Fx Sport 4 Carbon
https://www.trekbikes.com/us/en_US/b...ort-4/p/32262/
2020 Trek Fx 3
https://www.trekbikes.com/us/en_US/b...-disc/p/35021/
Is 2021 Fx Sport Carbon size Medium = Trek Fx 3 Large, interns of sizing ? I'm 6' feet tall and 32.5inseam
2021 Fx Sport 4 Carbon
https://www.trekbikes.com/us/en_US/b...ort-4/p/32262/
2020 Trek Fx 3
https://www.trekbikes.com/us/en_US/b...-disc/p/35021/
The FX is for beginners who like to be upright so short top tubes and taller head tubes.
#3
thing is large fx 3 has 58.6 stack and 39.8 reach, large fx sport 4 has 61.1 stack and 41.1 reach so stack and reach is bigger essentially a bigger bike , no?
#4
Senior Member
Join Date: May 2013
Location: Kips Bay, NY
Posts: 2,243
Bikes: Ritchey Swiss Cross | Teesdale Kona Hot | Haro Extreme | Specialized Stumpjumper Comp | Cannondale F1000 | Shogun 1000 | Cannondale M500 | Norco Charger | Marin Muirwoods 29er | Shogun Kaze | Breezer Lightning
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513 Posts