Author Topic: XM Carbon Speed - "Gran Tourismo" Frameset  (Read 171356 times)

klrdd

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #135 on: September 23, 2025, 06:16:10 AM »
The biggest personal issue for me is the slack seat tube angle (73°) combined with the setback seatpost. Even with the shortest saddle, I can't move my position as far forward as I'd like.

Interesting -- What is the saddle setback in the setup in the pictures? 100mm ish? It looks pretty close to the bottom bracket but still far from the UCI limit, and you did have to fully slam it forward on the rails to get there...

And we will add an 0 offset seat post with two clamps design as well.

Would the 0mm offset seatpost mentioned by Peter fix the issue? Seems like that would be enough to get you fully over the BB

voidptr

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #136 on: September 23, 2025, 06:51:02 AM »
Interesting -- What is the saddle setback in the setup in the pictures? 100mm ish? It looks pretty close to the bottom bracket but still far from the UCI limit, and you did have to fully slam it forward on the rails to get there...

Would the 0mm offset seatpost mentioned by Peter fix the issue? Seems like that would be enough to get you fully over the BB

I never measured the actual setback. I've been running the same saddle on the Ostro with a custom seatpost that allows -3mm setback almost all the way forward. So even with a zero-setback seatpost, I'm always going to be about 1cm short on the GT.

Please note that the picture of both bikes is from yesterday, after I sold my Ostro and the saddle had already been set up for the new owner. I also want to point out that my riding position is rather extreme, so this issue is very personal. The 73° STA isn't even considered slack by today's standards. The new standard for aero bikes in size 56/58 seems to be around 73.5°, but even the current Dogma F still uses 73°.

Despite the issues I had with the frameset, it was always a pleasure dealing with Peter. I also want to mention that I paid via PayPal F&F and received a partial refund a month later, with no obligation to do so.
« Last Edit: September 23, 2025, 07:04:06 AM by voidptr »

Bobinski

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #137 on: September 23, 2025, 08:19:33 AM »
The frame looks better in those pictures than any others i have seen. Love the front of the bike.

Do you run your cleats forward/mid/rear? Having progressed to small frames in recent years i now run cleats rear for fit and to mitigate toe overlap.
« Last Edit: September 23, 2025, 09:36:07 AM by Bobinski »

PANW

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #138 on: September 23, 2025, 08:46:42 AM »
@voidptr

Thank you very much for this detailed review!
As I’ve been saving money for a new frameset I’ve been 95% sure the Grand Turismo is the one, but a small part of me is intrigued by the fake Ostro.
Knowing this and the quality of work Peter does this has solidified my decision on this frame.

patliean1

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #139 on: September 23, 2025, 09:27:44 AM »
The complete bike looks excellent @voidptr . Makes me really look forward to the "race" version next year.

A two bolt saddle clamp design is much preferred in my opinion. It's much easier to make saddle pitch adjustments on the road without having to completely loosen a single bolt.

I'm 6 feet tall / 183cm. The majority of my road bikes have a seat tube angle of 73.5°. My saddle setback hovers around 9mm. Down from a whopping 10mm :o, 170mm length cranks, and a saddle height of around 78cm center to center. Selle Italia SLR Boost S3 on all my bikes.

My Tavelo Arow has a slacker 73° seat tube angle which forces me to run the saddle forward on the rails with only a 1cm of fore to play with. To be fair the seatpost as a 15mm setback. It works just fine for my bike fit. Would like to see 73.5° on the future GT frameset.


voidptr

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #140 on: September 23, 2025, 12:30:39 PM »
The frame looks better in those pictures than any others i have seen. Love the front of the bike.

Do you run your cleats forward/mid/rear? Having progressed to small frames in recent years i now run cleats rear for fit and to mitigate toe overlap.

bikeinsights.com calculates the "tire to pedal spindle" measurement, which can be really helpful for figuring out whether you'll experience toe overlap.
My cleats are moved all the way to the back. Again, very much a personal preference, but over the past few years of watching countless bike fitting videos, I've noticed that a lower saddle height + forward saddle + cleats to the back + 165mm cranks seems to work extremely well for most riders. It almost feels like a universal bike-fit cure for a lot of issues.
I'm also about to place an order for 3D-printed shoes from Hezo, where I'll ask them to place the cleat holes as far back as possible to really figure out my true limit.

Ohmanndill

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #141 on: September 23, 2025, 02:45:12 PM »
I find your comments quite surprising guys; as I've understood from the original thread, Peter developed that frame specifically to answer the ask for an "aero looking" frame but with relaxed/endurance geometry.
We can't ask for greater ST angle then, it would contradict the purpose of a "gran tourismo" frame IMO.

Anyway, thanks for the pictures. I find the frame to be sublime.
I'm definitely attracted, and i may get one for myself. Still kind of scared about the super long chainstay tho. Price being pretty steep, I don't want to take the risk of a having a boring bike to ride. Waiting for more reviews, or maybe a first idea of XMCS 2026 race bike. And also for Peter to clarify what's up with the paint job, it is confusing. No logo and customization at the end might be one of the greater feature of chinese bikes imo...

JustinFox

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #142 on: September 24, 2025, 02:06:51 AM »
I'm a retired graphic designer Peter, and have gone all in on buying, building and riding bicycles in my retirement. That said. I'll work for beer, and since you can't send me beer. I'll work for a frame.

Coming up with the right logotype is essential for a brand. Invest early, get it right, because you're going to end up putting that brand on EVERYTHING; from business cards, to frames, cars and building signage, in advertisements and so on.

Some of my typographic logos are attached. It's NOT about just choosing a font. It's about customising a standard font to make it your own (which then prevents other people simply finding your font and using it and looking like your brand).


bfish713

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #143 on: September 28, 2025, 10:38:16 AM »
Got my frame in the mail this week, built it up and took it out for the first ride.  I built it up with SRAM red XPLR and XMCS bars.

The build process was the smoothest I've had for a Chinese frame so far.  Others I've built up are: Speeder SC-55RD, Onirii One, Velobuild AreoGrav, and a Yoeleo rim brake frame a while back. In general the parts included were just slightly higher quality than most.  The headset bearings come in their CEMA box, the expander plug seems nicer than others I've gotten and the thru axles are on the lighter end compared to others (I think they weigh the same as the Onirii and 10g less than Speeder, not that 10g matters but to me indicates they are paying attention to details). 

The only issue with the frame I had was super minor.  The drive side of the bottom bracket was very difficult to get the threads engaged.  It would have been really easy to cross thread if I just forced it.  Once the first few threads engaged it went in smooth.  The other side went in butter smooth, so not sure what the problem was.  Fork has the brake cable come out on the left hand side, which is good for routing the non-UK way but might be annoying if you want your front brake on the right (I assume there isn't an alternate fork).  Brake mounts seemed faced and aligning the capipers was slightly harder than the Speeder but easier than everything else, including my old Canyon Aeroad.

Handle bars so far seem great.  Super stiff.  Geometry seems good and they now have those little bumps on the tops for grip and a nice XMCS logo in front. 

I've only ridden it for 30 miles so far so can't give a complete opinion on the ride feel, but will say general impressions.  Compared to the Speeder and Aeroad it is way less harsh and much smoother.  It also feels a bit smoother than the Velobuild AeroGrav.  Compared to the Onirii it's similarly comfortable but feels much stiffer.  The Onirii is a bit of a noodle and this bike is not.  In terms of handling, for me it's the best I've had.  It's not twitchy or super racy but it I would and will race a crit on it and I won't be wanting for more.  For me it handles like the like the Canyon but less twitch and more stable.  The speeder for me just doesn't handle well because I have to add a ton of spacers + positive angle stem so it's feels unstable.  In terms of stiffness/repesponsiveness I haven't really done any sprinting to test but it feels rock solid.  On the flat/downhill it feels a bit more sluggish than the Aeroad and Speeder, probably the longer chainstays.  Uphill it feels really good out of the saddle.  Just seems to go when you put the power down.  That's probably due to it being lighter but just as stiff in the rear compared to my old Canyon. 

To summarize: to me it feels like the Aeroad but more comfortable, lighter, more stable, and a tad less twitchy.  Once I put some more miles I can give more in depth opinions.  This is just based on one ride so subject to change, but I really like the bike so far

JustinFox

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #144 on: September 28, 2025, 04:39:34 PM »
Just a couple of logo concepts. Let me know what you guys think!


Ludo

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #145 on: September 28, 2025, 05:46:23 PM »
That second one is pretty nice!
What is the story the logo is saying, I don’t get it

Dewa6975

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #146 on: September 29, 2025, 03:21:15 AM »
I am also working on first version, already working on a second one based on some friends feedback.
would be happy to read yours too!

rsw42

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #147 on: October 03, 2025, 04:22:17 AM »
Hi everyone, it’s time for my „Longer“ time review. I haven’t put too much mileage into the bike. Currently I’m riding it back to back with my cyclocross-bike, so this is my most recent comparison.

Please keep in mind that my frameset was the very first leaving XMCS and I knew that it might have some issues. With all issues I had Peter was really helpful and I do believe that my feedback went into the further development of the frame.

Quality and problems: As said before I encountered some problems with the seatpost. According to Peter this is a problem of the first gen frameset and is sorted out – I’ll get a new seatpost so there might be an update on that issue… If I’m trying to put it positive: with my particular frameset there isn’t even a hint of seatpost slippage, no matter how much weight I put on top of that (and I've had severe Issues with other bikes in the past - especially my Cannondale Slice that almost that I had to fix with some soda cans). Other than that I was really impressed with the quality I’ve seen. Compared to the other carbon frames in my family (BMC, Ridley, Felt, Scott, Focus) the XMCS GT frameset qualitywise was up there with everyone else. I’d even go so far that it exceeded the Scott and the Ridleys, equals with the Felt. The Focus is a XC-Bike so I’m not too sure about how to compare them – but yeah, my daughter’s Focus Raven will stay my personal benchmark for quality.
It's hard for me to put a finger on what actually was superior on the Raven, because at every point where I’d compare the frames (bearing seats, threads etc) they came up almost equally nice. The two distinct differences are: the seatpost (27.2 round and not stuck on the focus) and that the Focus has internal cabling completely guided (with small carbon tubes) and provides cable exits on the down tube)

Build process: The process was as straight forward as it gets. Every further problems (aside from the seatpost) was due to the components I've chosen, not due to the frame (I hate that Pro aero handlebars…). Screw threads were all completely fine (please keep in mind that my framset wasn’t painted, so I wouldn’t have encountered problems with paint overspray damaging threads – what I believe might have been the problem with bfish’s bottom bracket threads)
Internal cable routing was as straight forward as it gets if it's not guided as it is on the Focus Raven, bearing seats where fine and everything came together quite smooth and easily. The clamp for the Di2-Battery is incredible and probably one of the little things that shows how much thought went into this bike… love it!

Geometry and ride feel: now there was some discussion about the geometry, so I have to state one thing right in the beginning. I am the actual target audience. I came aware of this frame due to the “low reach high stack aero” thread when I actually googled for exactly that. Due to some medical conditions I gained a lot of weight and lost a lot of mobility (hips etc). I’m not the youngest anymore and I need a bike that gives me the opportunity to get into an aero position, even though my body isn’t to bendy.
And in that respect the frameset delivers. I can get into a “low” aero position and keep it for longer periods, than on the BMC or my CX bike. I’m able to ride a longer stem (110mm) compared to any other bike I own, even though I still have quite some spacers left to raise the front. The “long” stem helps to get handling very sharp and controlled to the other bikes, and I just don’t notice that the rear triangle might be longer as discussed by voidptr.
I stated in earlier reviews that the bike feels weirdly high to me – and it still does (especially compared to my CX-bike) – but I figured out that this is because I had to switch to 150mm cranks earlier this year. I also switched the cranks on my BMC but since I stopped riding this before injury and therefore there were some months between this and the GT frameset, so I went directly back to the weird sensation I had on the BMC in the beginning. Switching to and from the CX bike with 170mm cranks the GT framset feels extremely high up and this gives me some trust issues with going into corners quickly. I guess that will change the moment I’ll switch the CX to 150mm cranks as well.
As for sizes there might be one gripe: I’d love to have an even smaller size, thinking about very small people.

The look: I've attached to pictures of me riding the bike. The frame looks aero. It looks great. I love it. The screws of the seatpost clamp are changed by now (but I still want to 3d print a carrier for my rear light, this is why I rode the screws like in the pictures for quite a while). Under me it looks ridiculously tiny. Well every bike does since I’m 183 cm and well over 100kg. I still like it. I don’t have too look at it with a Gorilla (me) sitting on top of it too often 😊.

Things I don’t like: As much as I love the bike there’s some things I really don’t like and I hope Peter and XMCS will think about for future bikes (or future iterations of the GT frameset). Most of the gripes don’t actually come from my bike, but from having two kids racing bikes (while growing rapidly).
Seatpost: I’d prefer 27.2 mm round seatposts. My bigger one is on her 2nd seatpost on her current bike, because I had to cut the first one so It’ll go futher into the frame before hitting the bottle cage bosses. One year later the (new) seatpost is 10cm out of the frame and next year I guess we’ll have 5 more cm showing. So for switching around stuff I prefer to be able to just get some more ElitaOne seatposts and be able to exchange quickly between the bikes if necessary. Further: the problem with the stuck seatpost, the seat clamp (one bolt) and that there’s only a setback version all has been discussed and is (going to be) changed by XMCS.

Internal cables only: Yes I know this is an aero bike and of course the cables are supposed to be internal for aero reasons. Yet I absolutely hate going through the headset, stem and the handlebars. While it’s a pain in the back for me (since I’ll have to change the stem and suddenly have to completely change the brake hoses) it’s a absolute no go for the bikes of my kids. I’d love to get them the race frame if it lives up to the standard of my GT frame, but with internal cable routing I just wont go down that route. I’d love to have the option to get the cables and hoses out of the NDS-down tube. My big one grew in her stem length for 4cm and reduced stem height (spacers and turned around stem) by about 3cm during the last 12 months – some because of growing, some because of fitness and skills. So for kids racing internal routing is not an option for my team. I’d love to have the option when ordering or just have a port on the NDS that could be closed up nicely – please Peter consider that for the race frame!
And yes, I do realize that this is less of a problem with wireless groupsets coming up, but to me the rear hose is the deal braker. I don’t want to find a way to stick 10cm excessive hose in the frame since I might need it in the future (could be noisy) and I don’t want to throw the complete hose everytime I have to change something on the setup because I have to cut some centimeters away every time I want to disconnect and reconnect the hose.

Used standards: That’s not so much things I don’t like but things discussed here or around me. Bottom Bracket: T47i is stiffer and more aero than T47ext so to me that’s the obvious choice of those two. But some people have asked for some pressfit standard (especially for the upcoming race frame). Pressfit might be lighter, but with internal routing I’m happy for a threaded version. So I’m on board with that one.
The other thing is the UDH. I like the idea of unification, for some reason I just never grew fond with UDH. To me it feels heavy, clunky and I’ve just had nicer things on other bikes. But I wouldn’t know anything I’d rather have, so I guess it’s okay the way it is…

Disc diameter restrictions: I know there’s not many people sharing that, but being as big as I am (and switching parts between several bikes including MTBs) I’d love to have the opportunity to fit even bigger rotors – 180mm up front. I actually feel that this would fit the target audience (people not being fit enough to ride a long and low race bike) quite well.



So with all of that said, here's my ultimate conclusion:
Would I buy again? YES!
What would I do differently: Cockpit, paintjob (no more cerakote for me). That’s it.

Tines

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #148 on: October 03, 2025, 08:14:34 AM »
Unqualified post : looks like you’re riding your kids bike. May be due to the angle.

rsw42

Re: XM Carbon Speed - "Gran Tourismo" Frameset
« Reply #149 on: October 03, 2025, 08:40:07 AM »
Unqualified post : looks like you’re riding your kids bike. May be due to the angle.

Under me it looks ridiculously tiny. Well every bike does since I’m 183 cm and well over 100kg. I still like it. I don’t have too look at it with a Gorilla (me) sitting on top of it too often 😊.

I'm afraid it would take a campervan underneath my wide back if I wouldn't want it to look like a kids bike... You should se me on top of my 90ies Cannondale CAAD5 Saeco... looks like I'm riding some toothpicks