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The world's lightest full suspension mountain bike

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Uber weight weenie Seb K shows you all his insane 5.98kg Scott Spark.


 
Posted : 29/07/2026 7:30 am
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~speechless~


 
Posted : 29/07/2026 9:00 am
wbo reacted
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Will the bars actually turn with cables and hoses that short?


 
Posted : 29/07/2026 9:03 am
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2 years building a bike and not a word about actually riding it?


 
Posted : 29/07/2026 9:08 am
racefaceec90 and nicko74 reacted
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Posted by: sharkattack

2 years building a bike and not a word about actually riding it?

 

Tell me you’re new to weightweenieism without telling me you’re new to weightweenieism. 

it’s not about the ride.

 


 
Posted : 29/07/2026 9:12 am
zerocool, dyna-ti, matt_outandabout and 2 people reacted
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I'd argue that it's not finished until the cables are route/secured in a useful way


 
Posted : 29/07/2026 9:41 am
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Posted by: sharkattack

2 years building a bike and not a word about actually riding it?

Gotta be honest, I'm not sure it can be ridden. A single brake lever controlling both brakes 🤨 And those "pedals" are something else... 

 


 
Posted : 29/07/2026 9:49 am
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An interesting exercise - its all about the little details that get done to it that add up rather than the finished product.

You've got to add over 50% for 9.19kg for a (full suss) bike I think I'd actually like to ride

https://www.pinkbike.com/news/dangerholms-scott-spark-rc-neon-project.html


 
Posted : 29/07/2026 9:49 am
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An expensive exercise in pointlessness. 


 
Posted : 29/07/2026 10:07 am
mboy reacted
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What bike computer does he use and has it also been lightened?


 
Posted : 29/07/2026 10:08 am
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Chain looks slack. Could save a bit of weight by chopping another link out. 


 
Posted : 29/07/2026 10:10 am
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Posted by: tomhoward

Posted by: sharkattack

2 years building a bike and not a word about actually riding it?

 

Tell me you’re new to weightweenieism without telling me you’re new to weightweenieism. 

it’s not about the ride.

 

 

Ignorance is bliss in this case I think.

I need my bikes to be rideable or they're useless. 

 


 
Posted : 29/07/2026 10:12 am
mboy reacted
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Why bother with gears? 

Surely this is crying out for SS...

Grips? If you don't need actual pedals then why bother with grips?

Computer mount ditto.

There must be another 50g of rubber that could be scraped off the tyres.


 
Posted : 29/07/2026 10:15 am
nicko74 reacted
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Will the bars actually turn with cables and hoses that short?

Yes but will also automatically brake and change gears for you.


 
Posted : 29/07/2026 10:26 am
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Posted by: reeksy

What bike computer does he use and has it also been lightened?

Thats my "complaint" (I dont really care, given the weight of my bike and belly) about my garmin. Its claimed 26 hour battery life is way over the top for 99% of users. 

Anyone who is a long distance fan and doing more than ~8 hours semi-regularly is going to have a fairly comprehensive light and/or dynamo set up.


 
Posted : 29/07/2026 10:32 am
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I wonder how far you could ride it before something fails catastrophically - and yeah yeah, tell me you're new to weight****erism without telling me etc 

 


 
Posted : 29/07/2026 10:32 am
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Posted by: bedmaker

Why bother

Quite

 

appreciate the irony of me posting that, given the amount of perfectly good time and money I piss away on ridiculous bike parts, but at least my projects are functional first, then made to be blingy dandy horses, these efforts seem to be (almost) functional, despite what the owner tries to get away with.

 

want a super light bike above all else? Buy that £1000 carbon SWorks balance bike


 
Posted : 29/07/2026 10:35 am
zerocool reacted
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Posted by: alan1977

I'd argue that it's not finished until the cables are route/secured in a useful way

yeah, that's a dog's breakfast of hoses and cables. You'd lose at least one or get pulled off balance the first brambly singletrack you encounter......(yes i'm new to weightweenieism too)


 
Posted : 29/07/2026 10:37 am
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Posted by: nicko74

Gotta be honest, I'm not sure it can be ridden.

"96% of the bolts are hollowed out" I don't think I'd want to sit on it, let alone ride it. 


 
Posted : 29/07/2026 10:40 am
nicko74 reacted
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Amazing attention to detail. As above though, wouldn't ride it! 🫪


 
Posted : 29/07/2026 10:45 am
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Anyone who is a long distance fan and doing more than ~8 hours semi-regularly is going to have a fairly comprehensive light and/or dynamo set up.

Nah.  They just get a Coros Dura. 


 
Posted : 29/07/2026 10:52 am
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A lot of time/effort/money to just create something so you can play billy-big-bollocks on the internet and claim to own the lightest full suspension bike ever thats totally unrideable.


 
Posted : 29/07/2026 10:59 am
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13.2lbs in old money. Pretty amazing. Except.... the pedals are just pedal axles, so that's silly. And. The red and purple bits really don't look nice together.


 
Posted : 29/07/2026 10:59 am
nicko74 reacted
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I mean in the real world it's this isn't it? image.png
But maybe some of the weightweenerism and fetishization of shaving weight in that community ultimately feeds through into bikes you could actually ride?


 
Posted : 29/07/2026 11:34 am
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Posted by: susepic

ultimately feeds through into bikes you could actually ride?

Nah, mainstream manufacturers stopped obsessing over weight years ago. Favouring bikes and parts that don’t fall apart.


 
Posted : 29/07/2026 11:37 am
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Sure it's impractical, expensive, and doesn't function as a usable bike any more, but at least the builder isn't humble about it.


 
Posted : 29/07/2026 12:01 pm
muggomagic, racefaceec90, ayjaydoubleyou and 1 people reacted
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I don't want to piss on anyone's chips - technically it's a heck of an achievement. I'd be very keen to see a ride review over some decent trails though! 


 
Posted : 29/07/2026 12:12 pm
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Amazing attention to detail

 

Hmmm. I really don't think so


 
Posted : 29/07/2026 1:21 pm
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I think the problem is these builds go too far (drilling all the bolts, 1 brake lever, removing structural bits of forks/dampers) or not far enough. (Gears, 29” wheels, >120mm cranks, fitting a computer) so the metric by which they’re judged is always changing. If someone set up a competition where there were actual rules to follow, followed by a ride test by a fully grown adult (control size), I might give more of a shit about these art (and they are art. As they have no purpose other than themselves) pieces. Really really expensive BSOs


 
Posted : 29/07/2026 1:25 pm
Dickyboy reacted
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Posted by: nicko74

I'd be very keen to see a ride review over some decent trails though! 

Posted by: tomhoward

If someone set up a competition where there were actual rules to follow, followed by a ride test by a fully grown adult (control size), I might give more of a shit about these art (and they are art. As they have no purpose other than themselves) pieces.

Yes, I would like to see them tested over a rough cross country trail. A dropper post, grippy tyres, decent brakes, a wide range cassette, and proper pedals add a bit of weight, but they make the bike faster and easier to ride on proper trails.


 
Posted : 29/07/2026 1:44 pm
nicko74 reacted
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Amazing attention to detail

 

Hmmm. I really don't think so


 
Posted : 29/07/2026 2:11 pm
K reacted
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Work of art to be hung on a wall, yes very pretty. I might trust it on a gentle ride to the shops but with one brake lever for two brakes I'd have to hike it down some steep descents which require a handful of front brake and an occasional gentle squeeze on the rear. Replacement aluminium bolts for anything more critical than a bottle cage no thank you - the bolt size was chosen assuming the strength of steel. The first requirement of a mountain bike is that it can be safely ridden down a mountain bike trail, on that measure it fails.


 
Posted : 29/07/2026 5:02 pm
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Came back to say - the owner better be a skinny ass whippet, rather than a juggernaut like me...


 
Posted : 29/07/2026 5:18 pm
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Reminds me of the nonsense I used to lust over in the early 90s, but even they were bikes you could ride. 

Like others have said I think I'd take issue with the claim it's a full suspension mountain bike because you couldn't ride it down the road, let alone a mountain. You'd probably find it easier on a similar weight UCI approved TdF bike.


 
Posted : 29/07/2026 6:23 pm
nicko74 reacted
 Roly
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That chain tension upsets me more than the loose cables.
Wonder if there's an audio track of it being ridden anywhere?


 
Posted : 29/07/2026 7:02 pm
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F***ing Sh**e.  Totally pointless waste of time and effort. Why not drill some massive holes in the frame and tyres seeing as it's completely unrideable anyway.


 
Posted : 29/07/2026 8:12 pm
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Posted by: ayjaydoubleyou

Thats my "complaint" (I dont really care, given the weight of my bike and belly) about my garmin. Its claimed 26 hour battery life is way over the top for 99% of users. 

Anyone who is a long distance fan and doing more than ~8 hours semi-regularly is going to have a fairly comprehensive light and/or dynamo set up.

I disagree. As a fairly competent 24hr racer I would love a Garmin which lasted the duration but was small and, above all, simple, just to record. I use two Garmin 200s, each with 16hrs of battery. I have a very comprehensive light set up but no dynamo, too draggy/faffy.


 
Posted : 29/07/2026 8:36 pm
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Posted by: Edukator

Work of art to be hung on a wall, yes very pretty..

In what world is that pretty?  It's a dog's dinner of mismatched colours, the cabling males it look like a broken clothes dryer, and the stupid single brake lever makes it near unusable as a mountain bike. 

Just a stupid waste of time, energy and materials

 


 
Posted : 29/07/2026 9:02 pm
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Posted by: Roly

That chain tension upsets me more than the loose cables.

 

I assume that is something to do with....

Derailleur. Return and tension springs replaced with titanium springs I made.

Agree with all the comments. Unrideable waste of time.

 


 
Posted : 29/07/2026 9:39 pm
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Patio needs weeding 😆


 
Posted : 29/07/2026 10:25 pm
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Posted by: desperatebicycle

13.2lbs in old money. Pretty amazing. Except.... the pedals are just pedal axles, so that's silly. And. The red and purple bits really don't look nice together.

No. He's removed so much weight from the pedals (and the paint obvs) that you just can't see them.

 


 
Posted : 30/07/2026 12:15 am
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Posted by: ayjaydoubleyou

An interesting exercise - its all about the little details that get done to it that add up rather than the finished product.

You've got to add over 50% for 9.19kg for a (full suss) bike I think I'd actually like to ride

https://www.pinkbike.com/news/dangerholms-scott-spark-rc-neon-project.html

The Dangerholm Scott Spark is absolutely gorgeous compared to this world's most expensive BSO


 
Posted : 30/07/2026 4:30 am
nicko74 reacted
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I was reading the Bikeradar piece on Dangerholm's 9.5kg Scott Spark (coincidentally) over the weekend. Obviously it's quite a different build, but definitely more a bike I'd actually ride. 

https://www.bikeradar.com/features/pro-bike/dangerholm-scott-spark-rc-2


 
Posted : 03/08/2026 8:46 am
racefaceec90 reacted
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You'd lose at least one or get pulled off

Its not that sexy.


 
Posted : 03/08/2026 9:22 am
susepic reacted
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I have a photo of my fs bike which will make it the lightest bike in the world (obviously cannot be ridden etc but lightest in the world ;-p I would class daganholm's bike as the realistic lightest bike as it can be ridden offroad as intended and it also looks a lot nicer than the op bike. 


 
Posted : 03/08/2026 4:43 pm
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