Size "M" or "L" looking for people who sized up

[martin_m_bo]

Hey volks.

I am undecided between sizes. I rode both and cant decide wich one fits better between size "m" and "L".
My non ebike is a stumpjumper 2022 "S3" with a 50mm stem.
Most of the time I am riding trails in germany S0 to S3, no bikepark only a few times a year. I prefer nature trails/downhills

Maybe someone has same bodyspecs and sized up and can give me some feedback?

My bodyspecs are :
I am 173 cm tall,
my inside leg length is 81cm
Arm length 57cm

 

[Ndanger]

I wish that more bikes had a "medium Large" size, or that there was a dial on the bike that could change the size during a ride I am 175 / 79 / 61 and for the most part end up with a large.

 

[martin_m_bo]

I wish that more bikes had a "medium Large" size, or that there was a dial on the bike that could change the size during a ride I am 175 / 79 / 61 and for the most part end up with a large.

Do you have the feeling that the amflow is to long for you in "L" ? Medium LArge woud be perfec for me i guess

 

[Ndanger]

Do you have the feeling that the amflow is to long for you in "L" ? Medium LArge woud be perfec for me i guess

Everyone has a different opinion on how the "cockpit" should feel. Some like to be in the bike and some on the bike, as well as the type and terrain of riding is a big factor. I decided "jokingly" that I need one of each Or better yet Medium Large ideally.

 

[hhjj134]

I am 175cm and around 80cm leg length. Both of my trail and XC bike are in medium. So I am used to smaller bike.

Got my amflow in large and had two rides so far. Reach is on point and quite comfortable. The main complain I have is the height of the seat tube. I have to insert the 170mm dropper all the way down to get the proper seat height and the seat is a bit too high when the dropper is in down position.

I would probably go for medium if I can choose again for lower seat tube and better overall agility.
The advantage of large size is more stable in high speed and going through rock garden.

 

[Plummet]

My first suggestion for everyone in the world looking at bikes is to immediately stop looking at sizes and start looking at geo numbers. There is a wild range in reach and TT length in different manufacturers size.

Use geomtry geeks to compare numbers

For sizing in particular look at reach that gives you standing cockpit and effective top tube which gives you seated cockpit.
The xc pedaller puts a priority of effective TT measurement and the dh focused guy is more interested in reach.

Your stumpy looks to be between 448 and 455 reach depent which 22 model it is.

Thats ya starting point. At your height i'd look at 465 reach max and 440 reach minimum. 450/455 is probably optimal for you. Noting that you can get away with a shorter reach on an e bike because it is both more stable and requires less optimised pedalling position.

Geometry Geeks

The world's biggest open geometry database. Find bikes by name or numbers. Easily compare bike geometry side-by-side.

geometrygeeks.bike

 

[aarfeldt]

I'm 176 / 85 / 65 / 78 kg / 59 age.

I come from a Orbea Rise in Large, which was too big, but usable.
Now on Amflow in size medium, which suits me perfectly.

2 modifications:
Replaced the handlebar to a OneUp carbon V2 size 760/35.
Replaced the Fox dropper post to a RockShox Reverb AXS 175.
This made my cockpit super good for my purpose.

 

[martin_m_bo]

My first suggestion for everyone in the world looking at bikes is to immediately stop looking at sizes and start looking at geo numbers. There is a wild range in reach and TT length in different manufacturers size.

Use geomtry geeks to compare numbers

For sizing in particular look at reach that gives you standing cockpit and effective top tube which gives you seated cockpit.
The xc pedaller puts a priority of effective TT measurement and the dh focused guy is more interested in reach.

Your stumpy looks to be between 448 and 455 reach depent which 22 model it is.

Thats ya starting point. At your height i'd look at 465 reach max and 440 reach minimum. 450/455 is probably optimal for you. Noting that you can get away with a shorter reach on an e bike because it is both more stable and requires less optimised pedalling position.

Geometry Geeks

The world's biggest open geometry database. Find bikes by name or numbers. Easily compare bike geometry side-by-side.

geometrygeeks.bike

i know the geo and like i said i ride the stumpy with a 50mm stem wich means it is 15mm longer then original.
in fact my stumpy has a reach 350mm +15 mm stem=365mm. amflow reach in L is 375mm.

if someone rides a size L with simular body size is it to much bike ?would you size down ?or is it perfect? That is the question

 

[Plummet]

i know the geo and like i said i ride the stumpy with a 50mm stem wich means it is 15mm longer then original.
in fact my stumpy has a reach 350mm +15 mm stem=365mm. amflow reach in L is 370mm.
if someone rides a size L with simular body size is it to much bike ?would you size down ?or is it perfect? That is the question

Nobody can tell you whats best for you other than you. Sizing is very personal.

I am 180cm and run the following
465 reach dh bike
460 reach enduro bike
455 reach E bike.

Personally i wouldnt run the 470 reach E bike If i was you. If anything downsizing is the better option on an E because its heavier and more stable you don't more length to add stability to the chasiss. Quite the opposite is true of e bikes. They are heavy and I want to increase maneuverability so running a bit shorter than your mtb fits the bill better for me than going longer, heavier and less maneuverability.

 

[EMTB718]

I am about 173cm also. Anything more then 465mm is too long for me. I have 4 bikes including Amflow. They are 445mm, 452mm (Amflow) 458mm and 464mm. 464mm is S3/Med Specialized Enduro and that's about max for me. Anything beyond that, it's bit of stretch for me. I normally have my saddles set as far back as I can but on Specialized, I have it set in the middle to offset long reach.

One thing I do notice on Amflow is that wheel base is shorter compare medium size bike.

You also have to keep in mind about your handlebar height. All my handlebars are at minimum 35mm rise or higher. Amflow has 50mm rise.

 

[pdqmach26]

Size down! Period. E bikes are already heavy and planted

 

[Samoaj]

I think the key is to see if you can actually sit on the bike and see what feels good. My non e-bikes from many years ago were always medium but my Megawatt is large. According to Nukeproof I was too small for the large but I was getting it at a good price and I tried it before buying it and it felt good and comfortable. I do some whitewater kayaking as well and it’s the same with kayaks, my advice is try as many as you can before buying as you will know what feels good rather than looking at specs. I know this can be hard to do in this day and age with direct to consumer selling but it’s worth seeing what you can get hold of.

 

[martin_m_bo]

I measured my bike middle handlebar to middle saddle = 630mm
I went to my bikeshop measured amflow "L" middle handlebar to middle saddle surprise 630mm (of course the bike is longer)amflow "M" is 600mm.
this friday i can take the "L" to a 40km testride and then i hopefully know more. (i already did it with M)

 

[mustclime]

E bikes hold a lot of weight in the down tube because of the battery. My advice is size down to make it easier to get the front of the bike up. I sized up and it’s really hard to get the leverage to pull the front of the bike up.

 

[Bender]

Hey volks.

I am undecided between sizes. I rode both and cant decide wich one fits better between size "m" and "L".
My non ebike is a stumpjumper 2022 "S3" with a 50mm stem.
Most of the time I am riding trails in germany S0 to S3, no bikepark only a few times a year. I prefer nature trails/downhills

Maybe someone has same bodyspecs and sized up and can give me some feedback?

My bodyspecs are :
I am 173 cm tall,
my inside leg length is 81cm
Arm length 57cm

The answer, as usual, is "it depends".

I'm 178cm tall and my last bike was a 2014 trek size 18.5. Back then, I was torn between the 18.5, which felt "just right" or the 19.5, which felt a bit large and "trucky". I ended up getting the 18.5, but despite serving me well, that bike felt cramped after after a few years. I tried to remedy it with offset seat posts and other tricks, but it never felt 100% right.

When I decided to move on to a new bike, the same problem came up: Levo S3 or S4? I'm lucky enough to have a LBS that had both sizes for demoing. I got the S3 and did a long ride on my local trails. It felt like my old bike: playful and confident. I then went back the next day and got an S4: It felt comfortable and secure, even over rocks and other obstacles.

The S3 was more "playful", but honestly I don't do a lot of jumps and things of the sort. I ended up getting the S4 and I am now very happy with it. In fact, I don't remember having had a bike that comfortable on long rides and it's playful and agile enough for my use.

So, in short, try to demo the sizes you want and see what "feels" better. Another point towards going up in size is that it's possible to shorten a long bike (by rotating the handlebar a bit, getting a different handlebar, shorter stem, etc), but making a shorter bike feel longer is very hard; you'd need an offset seat post, which changes your position in the bike and severely limits your choices of dropper posts, or a longer stem, which really changes the bike handling for the worse.

 

[Ndanger]

The answer, as usual, is "it depends".

I'm 178cm tall and my last bike was a 2014 trek size 18.5. Back then, I was torn between the 18.5, which felt "just right" or the 19.5, which felt a bit large and "trucky". I ended up getting the 18.5, but despite serving me well, that bike felt cramped after after a few years. I tried to remedy it with offset seat posts and other tricks, but it never felt 100% right.

When I decided to move on to a new bike, the same problem came up: Levo S3 or S4? I'm lucky enough to have a LBS that had both sizes for demoing. I got the S3 and did a long ride on my local trails. It felt like my old bike: playful and confident. I then went back the next day and got an S4: It felt comfortable and secure, even over rocks and other obstacles.

The S3 was more "playful", but honestly I don't do a lot of jumps and things of the sort. I ended up getting the S4 and I am now very happy with it. In fact, I don't remember having had a bike that comfortable on long rides and it's playful and agile enough for my use.

So, in short, try to demo the sizes you want and see what "feels" better. Another point towards going up in size is that it's possible to shorten a long bike (by rotating the handlebar a bit, getting a different handlebar, shorter stem, etc), but making a shorter bike feel longer is very hard; you'd need an offset seat post, which changes your position in the bike and severely limits your choices of dropper posts, or a longer stem, which really changes the bike handling for the worse.

Yes, definitely the same issues I have been dealing with and also ended up sizing up to the large this time around.

 

[martin_m_bo]

thank you so much for all your comments. it helps a lot. I see all the pros and cons too.
I feel the same here ".....that bike felt cramped after after a few years. I tried to remedy it with offset seat posts and other tricks, but it never felt 100% right."

 

[dezzracer]

I wish that more bikes had a "medium Large" size, or that there was a dial on the bike that could change the size during a ride I am 175 / 79 / 61 and for the most part end up with a large.

Gasgas sizes their bikes that way. I have a medium/large. Bike sizing is funny... Almost everyone will tell you they are “in between”

 

[dcxs]

I'm currently going through this.

My current bike on the right with the 2 Amflow sizings.

I've sat on a large and had a go around the shop but no medium in stock. Large felt familiar if lower at the stack (which it is as it's a trail bike) but reach didn't feel that different although the specs say it is. I do like the feeling of being in the bike as it definitely offers confidence on steep trails but probably at the expense of it being something that is easy to control.

I'll add that when I'm out of the saddle, my current bike feels ideal but on XC work where I'm sat pedalling, I do find it short and the saddle is back on the rails
View attachment 169242

You forgot a small detail, how tall are you? Im 177 cm and with a 42 mm stem it felt perfect

 

[Chaser]

You forgot a small detail, how tall are you? Im 177 cm and with a 42 mm stem it felt perfect

174cm, standard chimp, proportionate leg length

 

[martin_m_bo]

Update i rode a "L" bike. for me it feels good on the trails BUT if you go downhill the bike gets to long and the problem is the droper post. In the lowest position it was to high. I decided for myself not to buy a amflow bike because i dont feel 100% right on a medium and not 100% right on a large bike. Actually i am intrested in a different kind of bike the opposit to an amflow full power, propain sresh sl

 

[dezzracer]

Hey volks.

I am undecided between sizes. I rode both and cant decide wich one fits better between size "m" and "L".
My non ebike is a stumpjumper 2022 "S3" with a 50mm stem.
Most of the time I am riding trails in germany S0 to S3, no bikepark only a few times a year. I prefer nature trails/downhills

Maybe someone has same bodyspecs and sized up and can give me some feedback?

My bodyspecs are :
I am 173 cm tall,
my inside leg length is 81cm
Arm length 57cm

Almost all riders claim they are “in between”. People fret over exact frame size way more than they need to. It will never be perfect in all conditions and terrain. Too many variables and body dimensions. Get it close then adjust your riding style to suit the bike. If needed change or adjust seat, stem or bars to your liking.. Flame away….

 

[dcxs]

Well I had to sell my Fuel Exe M due to it not fitting, tried everything. I mean everything is relative, its not unusable but I immidetly rode much better on the Amflow and size felt like a big part of it. And btw I bought the Amflow in size L

 

[Chaser]

Update i rode a "L" bike. for me it feels good on the trails BUT if you go downhill the bike gets to long and the problem is the droper post. In the lowest position it was to high. I decided for myself not to buy a amflow bike because i dont feel 100% right on a medium and not 100% right on a large bike. Actually i am intrested in a different kind of bike the opposit to an amflow full power, propain sresh sl

I guess that highlights that the Amflow isnt for everyone.

Almost all riders claim they are “in between”. People fret over exact frame size way more than they need to. It will never be perfect in all conditions and terrain. Too many variables and body dimensions. Get it close then adjust your riding style to suit the bike. If needed change or adjust seat, stem or bars to your liking.. Flame away….

Bars yes, stem maybe, seatpost on an MTB these days less so. I would adjust my riding style to "ill have a go of that" to "nah there's no way I'm going down that" most probably if the bike wasn't the truck I've been used to, but on the flip side it might mean I enjoy the less gravity orientated stuff more.

 

[martin_m_bo]

If i woud buy a amflow i woud choose size M and adjust it to my needs with a longer stem.

 

[martin_m_bo]

I coudnt resist and bought a amflow size M

 

[dezzracer]

Hey volks.

I am undecided between sizes. I rode both and cant decide wich one fits better between size "m" and "L".
My non ebike is a stumpjumper 2022 "S3" with a 50mm stem.
Most of the time I am riding trails in germany S0 to S3, no bikepark only a few times a year. I prefer nature trails/downhills

Maybe someone has same bodyspecs and sized up and can give me some feedback?

My bodyspecs are :
I am 173 cm tall,
my inside leg length is 81cm
Arm length 57cm

Every rider I know is between a medium and large lol. Trying to buy perfect frame to body size is an effort in futility and overrated. Get as close as you can then use seat, stems, and bars to adjust to your liking and riding style. You can buy different stem off sets and bars to open up or close the cockpit.

 

[dadeadduck]

I'm 176, had an S4 levo that I thought was too big. Went with M Amflow, put on 45mm riser ERA carbon 780 wide and hope stem. Very happy with the setup.

I've got 150mm AXS dropper, could probably do a 175mm but it's still fine.

 

[dcxs]

Every rider I know is between a medium and large lol. Trying to buy perfect frame to body size is an effort in futility and overrated. Get as close as you can then use seat, stems, and bars to adjust to your liking and riding style. You can buy different stem off sets and bars to open up or close the cockpit.

I generally disagree. Finding a geo that fits your height I would say is one of the top priorities when buying a 5-10k bike. If the geo is off too much, then look at another bike.
Of course you can expect to play around with the cockpit a little.

 

[Pizzman]

I’m 5-10 or 1,778 mm
I fit a medium. I like a large
I like large size frames. Stable, more room to move position around.
I ride an S4, with short stem, 40mm rise bars.
I’m a fan of sizing up if you are experienced.