Nukeproof Releases New Solum Dirt Jump Frame

Aug 11, 2022
by Mike Kazimer  

With Crankworx Whistler in full swing, the timing seems especially appropriate for Nukeproof's announcement that the Solum dirt jump / pumptrack frame is returning to the lineup after a nearly 10 year hiatus.

It's still rolling on 26” wheels, but it now has a hydroformed, triple butted 6061 aluminum frame. A machined chainstay yoke provides clearance for up to a 2.3” rear tire and a 32-tooth chainring (30 – 13t is the recommended setup).



There are two sizes, regular and long, allowing riders to choose their preffered handling traits. The weight for a regular frame is a claimed 2.26Kg/ 4.76lb.

The geometry doesn't stray too far from the typical norm for a dirt jumper – the whole 'long, slacker' thing isn't really applicable when you're trying to create a quick, snappy bike. The head angle is 68.5-degrees with a 100mm fork, which changes to 69.78-degrees at sag.

The reach is 400mm for the regular, and 420mm for the long, with a effective top tube length of 585 or 605mm respectively. Depending on the wheel position the chainstay length can be set anywhere between 389mm to 402.5mm.

The frames will be available through Nukeproof's dealer network starting on August 17th, and will retail for $550 USD, headset included.

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Member since Feb 1, 2009
1,666 articles

  • 37 1
 In a world of $12k bikes, $3k wheels, and e-bikes... PinkBike brings us some classic 26" action to remind the old guard why we still log into this site. Cheers NukeProof
  • 26 1
 are people seriously considering putting bigger wheels on dirt jumpers?
  • 18 31
flag pmhobson (Aug 11, 2022 at 9:38) (Below Threshold)
 I dunno. But if you told me a DJ bike *could* take my existing 650b wheels, I'd be more inclined to take the dive.
  • 9 2
 Honestly as someone who has spent the last 10 years gradually removing all 26" wheels from my garage, the most common "spare wheelset" in my parts bin is 275 wheels.
  • 7 8
 I know a few guys have small frames and 27.5 wheels and are shredding it just as hard as almost every other guy out there on the 26-in
  • 31 11
 >26" is for the people that bought a DJ but don't do DJ stuff
  • 3 0
 @pmhobson: the old Nukeproof Snap frame actually has enough rear clearance for a 27.5” wheel.
  • 1 0
 @DH1977: I had no idea.
  • 2 0
 Yep, some of the points in this press release are very poorly written
  • 4 2
 @nickfranko: Possibly. Once of the guys I know with 27.5 on a DJ is backflip, whips, barspin etc.
  • 3 1
 I take it you havent seen the prosauce 29er dj...
  • 8 2
 Why cycles has the 'tf' 27.5 dj bike. Seems like a blast tbh but I'm a tall boi
  • 3 0
 @nickfranko: seriously curious…..what makes you think this?
  • 3 0
 @Bro-LanDog: Reeb will also make you a 275 Destroyer.
  • 3 1
 @bman33: I'm sure they can shred a 27.5 dj, but why? What possible benefit is there?
  • 4 4
 @shami: 275 bikes will be more comfortable as you are not as hunch over as the 26, great for people who wanted to "try" dirt jumps and posers.
  • 5 1
 @shami: because they like the feel of slightly larger wheels?
  • 6 2
 @shami: same benefit as going from a bmx to a dj bike. Bigger, more forgiving especially for tall riders.
  • 5 3
 @shami: Cause if the bike industry says it is good people will believe it.
  • 9 1
 @93EXCivic: how dare folks ride a bike they feel comfortable with or dare to go outside establish norms. Bastards all of them!!!
  • 1 5
flag atiboa (Aug 11, 2022 at 15:34) (Below Threshold)
 i don't know, but i'm waiting for the newest 36" wheeled slopestyle machine, just to be the fastest ⏩⏩
if this trend continues (thanks god isn't true for DJ/street bikes), they'll put small obstacles just in front of kickers, to should say "My 29" wheeled DJ bikes' roll-over capabilities helped me to finish ahead of those old-fashioned guys with their vintage 26" bikes! "
  • 2 1
 @Bro-LanDog: Just buy a bigger BMX. My BMX is bigger and longer than my mates Jackal if that’s what you wanted off course. Absolutely nothing wrong with buying any type of bike you want with and sized wheels.
  • 1 0
 @bikebike69: because 20" bmx bikes exist.
  • 5 0
 @thenotoriousmic: the head tube angle is still notably steeper on a bmx and generally the stack height is lower as well, also suspension is nice for less than perfect landings. Different strokes for different folks. Nothing wrong with people riding what they enjoy.
  • 3 3
 @Bro-LanDog: not with a 9 1/2 inch rise bar and a top load stem but whatever you want to ride is cool. My BMX cost about the same as a pair of Pike DJ’s and needs absolutely no maintenance.
  • 2 0
 @thenotoriousmic: fair, but one thing bigger wheels will always have an advantage over a 20in bmx is bb drop. A bmx bike will always have more nervous, twitchy handling than a dj with a bb at or below the axles.
  • 1 0
 @Bro-LanDog: F yeah they are. They’re absolutely terrifying when you’ve not been on one for a bit and you’ve come off a mountain bike but once you’ve got used to and you try DJ bike they feel slow and unresponsive but the wheel size and geometry is what allows them to do this.
  • 1 1
 @Bro-LanDog: You say advantage, but that's just your opinion, man. Some people want a bike that's twitchy.
  • 2 0
 @DarrellW: of course. That's why there's a variety of different bikes, and that's a good thing Smile
  • 18 0
 We want budget friendly completes.
  • 14 0
 “69.78-degrees at sag”
I have never seen a dirt jumper run sag. Usually they run a few psi over the max recommended for their fork with all adjustments set to closed.
  • 1 2
 Especially on the Pike DJ, which is kind of the reference fork, one can barely ride without sag, because of it´s smaller air camber (five tokens in volume less) then the normal pike. If one likes to use the available travel on harder landings. (Thats why I have a normal Pike with 4 tokens. But I like to have a working fork and ride it a little softer:-D )

If the rider does not want to have the fork use its travel, yes, they may not ride much sag at all.

But you may still be right. 10-20mm SAG would be much for many riders, but not much for the geometry change
  • 7 1
 having had a Specialized P1 and a Rocky Mtn Flow...I can't imagine trying to DJ/Jib/Urban assault in 29rs or even 27.5"s?
  • 9 2
 My DJ bike is probably 15 years old. Looks just like this.
  • 2 0
 mine is exactly 15 years old... but i dont have a tapered headtube which really dates the frame Frown
  • 7 0

Who cares, enjoy your bike!
  • 1 1
 If you got something from NS Bikes (they where one of the first bigger brands who figured out a good geometry right about than), nothing much changed (other than tapered, which is a good development for dirt jump I think). But some manufacturers have not figured it out until much later.

Some old frames really make it much harder to have fun, because they make it more difficult, than it has to be.
  • 7 0
 DJs are perfection! The simplest bike teaches you the most difficult skills.
  • 3 0
 Its good to see some companies releasing hardtail 26" frames. Many of us started on one of these.

Its not good for a company having sponsored riders at pumptrack or slalom events riding other manufacturer's bikes
  • 1 0
 Do frames with sliding dropouts require IS brake mounts with a longer slot to match the rear wheel slide? I've never considered this until now, but I don't think there is a way to position the brake correctly with Post Mount.
  • 3 0
 On my Kona, the IS mount is part of the NDS sliding dropout.
  • 1 0
 Yeah pretty much. No way you could do that with PM unless the whole mount slid somehow
  • 1 0
 Many frames (NS Majesty, 2012 P3 ...) have neither sliding drop outs nor adjustable brake mounts and work. But you may not be able to mount it extremely far back, but everything at least between 0-12,5mm. (0-0.5 in.), which is 2 chain links / 2 seems to work fine
  • 2 0
 "The head angle is 68.5-degrees with a 100mm fork, which changes to 69.78-degrees at sag" which no real dirt jumper knows what is. Those guys run their forks pretty much rigid most of the time lol
  • 2 1
 If I had a bunch of 27.5 parts I won't build another 27.5 bike at all. Even less a 27.5 dj... I'd get a scout frame or similar (the shorter reach the better). 130-140mm up front. Then I'd sell both my dj and enduro bikes/frames and save the money for trips. I'd cruise to the skatepark sliding into curbs like they were berms, doing 180 skids to fakie and all kind of fun stuff; then do some riding there at the skatepark: 360's, nohands, t-bogs, high airs in spines and quarters...; Finally I'd go to the pumptrack manualling 50% of the time, doing some cranckflips and 180's, ride there, and end the session doing a couple of fufanus and fakie stuff on a bank to curb near home till I'm exhausted. For the weekend I'd go on an epic ride with the enduro fellas with my simple, light, responsive and reliable hardtail they secretly love. Well that's what I actually did and love it!!!! Half the bikes, double the fun! Of course meaty tires and bike size limit on the skatepark riding and no rear suspension limit on the downhills but once you get used to it and you become one with your only bike it's all surprisingly (almost) equal to riding enduro or DJ bikes at a pretty high level. I swear it! Or maybe I'm just gradually less keen on riding super fast and doing crazy tricks at the skatepark to focus on having fun and bike control, but that's the way I see it now and regret not realizing it earlier...
  • 6 2
 looks like a commencal absolut
  • 1 1
 Looks like a giant STP to me.
  • 2 0
 @unrooted: Top tube and down tube and the color really look like a commencal (which is a nice frame). But the STP looks different to me.

But on the other hand, they all "look the same" from afar, because this is the form of frame that works for dirt jumping. If it does not, it may even be a bad sign :-D
  • 4 0
 Had to Google "solum"...basically means dirt.
  • 5 2
 29er DJ is great for rock garden jumps.
  • 3 0
 Too bad no steel option. The first one was one of my favorite frames.
  • 3 0
 Great vid - putting Hawick on the map Smile
  • 2 1
 You can either dirt jump or not, giving a man a paint brush won't make him Picasso.
  • 1 0
 If the industrywanted DJ bikes of 27,5" or 29" and all brands would have one...DJ bikes are 26" forever
  • 1 0
 Nice sliding drop outs . I'd get the 420 long. Tapered HT gives you lots of options for forks .
  • 1 0
 It looks like a Michelin has some interesting prototype of pilot slope tires here.
  • 1 0
 Good to see! But I prefer my Snap!
  • 1 0
 Is that price correct cos CRC has them at £499 which is more than $550

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