YT Releases 24" & 26" Mini Jeffsys for Kids

Feb 13, 2020
by James Smurthwaite  
Photo Isac Paddock
Photo: Isac Paddock

Following on from the success of signing Vali Holl in 2013, YT has found another young ripper in Harry Schofield, a 10-year-old prodigal talent who we've been following very closely here at Pinkbike. We've seen him testing on his own custom mini-Jeffsy through the winter and now YT is bringing it to the masses.

The German direct-sales brand has today announced the Jeffsy Primus, a smaller version of its popular trail bike that will be available in a 24" and a 26" inch options and should cover shredders from 135cm to 160cm in height.


bigquotesWe are not toying around with this bike. We wanted to create a real performance mountain bike for the Young Talent out there. Creating a bike of this sort has been something we have been eyeing up for some time. After developing the custom bike for Harry and seeing how well he got on with it we knew we were on the right path and it is great to see this project become a reality. Markus Flossmann

Photo Isac Paddock
Photo: Isac Paddock

Making the bike as fun as possible was the goal for YT so they have gone for a lighter tune on the shock as well as selecting cockpit and contact points components that should be more suited to lighter riders. There is more than a name linking it to its bigger sibling though, the Jeffsy Primus retains the single-sided hardware access and double sealed bearings from the original bike. The kids' version is also as slack as the adults' version boasting a 66/65.5° head angle, adjustable via a flip-chip.

bigquotesWe built this bike utilizing our Jeffsy all-mountain bike platform, but with the intent to allow people of smaller stature to enjoy riding mountain bikes. Still, the Jeffsy Primus has the same maximum rider weight as our other mountain bikes, resulting in the fact that it isn’t necessarily limited to just small, light riders and certainly has the capability for real off-road use. We worked with a variety of smaller riders to help us understand the specific needs. People will find that the bike has an active suspension, with a nice progression that lets you push the bike hard and a geometry that’s comfortable at all speeds. Being a smaller rider should not mean you have to sacrifice on durability or quality. Chris Hilton, CTO YT Industries

Photo Isac Paddock
Photo: Isac Paddock

YT Jeffsy Primus 24


Manitou provides the suspension for the smaller version of the bike with a 130mm Machete JUNIT fork and McLeod shock. SRAM are on drivetrain duties with NX shifting and Guide R brakes mated with 160mm rotors. SDG have the contact points covered and Maxxis Minion DHR II tires finish the build.

Jeffsy Primus 24 - 1,899.00 € / £1,599.00 / $1,899.00. Claimed weight - 12.6kg.

YT Jeffsy Primus 26


The Primus 26 gets a small boost in travel as a 140mm Machete fork is paired with a RockShox Deluxe shock for damping. The 26-inch version also changes drivetrains and gets the SX version of the Eagle groupset, however it uses the same Guide R brakes. Also shared are ODI grips but you get e13 handlebars and a YT branded Postman dropper post on this bike. Maxxis again provide the rubber with Minion DHR II tyres.

Jeffsy Primus 26 - 1,999.00 € / £1,699.00 / $1,999.00. Claimed weight - 14.2kg.


Available from March in Europe and from mid-March in the US. More info, here.


172 Comments

  • 210 2
 YT should make a 26 that fits a youth around 5’11.
  • 45 1
 or maybe 6'4 ;-)
  • 23 1
 an weigh over 90kg.......
:/
  • 12 1
 You could always settle up for a banshee
  • 21 22
 They're not willing to produce bikes that don't sell, mate.
  • 2 10
flag drivereight (Feb 13, 2020 at 8:05) (Below Threshold)
 @tempest3070 thought 26” wasn’t selling?
  • 13 18
flag tempest3070 (Feb 13, 2020 at 8:10) (Below Threshold)
 @drivereight: They're not. If you think otherwise don't you think you'd see people selling more of them?
  • 4 0
 +100
  • 8 3
 just put 26" on a 27 bike?
  • 4 3
 @tempest3070:
People are selling them, just look at the buy & sell on here. The problem is they aren't making them, just like they're not making 135 QR rear spacing anymore.
  • 4 0
 @tempest3070: chicken egg
  • 2 1
 With these price, we can buy a Mt.Bike again!
  • 4 2
 Imagine those kids found out they cant find 26 tyres.
  • 1 0
 12spd. Eagle on a 26?
  • 1 0
 @dfbland: what???
  • 1 0
 @endurocat: gotta be a better option then the crap e*13 cassette that comes on the 29"
  • 3 0
 Pretty rad, I'm jealous of the new generation. We were hucking 49lbs steel rigid and box bikes.
  • 2 0
 @chyu: good joke. the industry is such a farce... I buy great 26" tires all the time
  • 72 8
 KIDS WANT THE GRIM DONUT
  • 9 0
 Grim Donut Hole?
  • 31 0
 Grimbit
  • 56 1
 The Grom Donut
  • 4 0
 @Telebikes: Grim Munchkin
  • 1 1
 what's a problem??
nicolai/geömetron in xs-xxs size??
  • 1 0
 Haters gonna hate.
  • 47 1
 Looks like 26, indeed, ain't dead.
  • 24 0
 26 ain't dad
  • 5 7
 It never died for dirt jumpers or kids bikes. For everything else it's deader than a doornail.
  • 5 0
 This is how the manufacturers sneak 26 back in... "Its for kids but just as strong as our adult bikes" Finally a trail bike that will fit my wife....
  • 7 0
 @headshot: That is exactly what my wife did last year. She bought a CUBE stereo 140 full sus "junior bike" which fits her much better than most of women specific bikes currently available on market.
  • 38 0
 I’m a shorter adult rider...been waiting for this for years. The switch to 27.5 - 29 wheels left me behind. When you’re short...even the minor jump to 27.5 was too much. My tiny balls need more standover! Btw The YT Mill is in my town...right next to really good trails. You can borrow any of their bikes and test them right there. I’m going to try the the 24 version too. THANKS TO YT FROM MY TINY BALLS
  • 3 0
 Me too ım 5-6 and Im unconfortable in most bikes. Bikes that I feel perfect is expensive for me but this bike has nice price. Also I was using DirtJump for a long time but now I have downhill bike so Im thinking to use this bike as slopestyle/trail bike
  • 2 0
 @blacksmithdhfr: yep, you called it
  • 22 0
 YT will really capitalize on this small market.
  • 12 0
 Not as minor as you might think.
  • 4 4
 5’6” and below!
  • 7 2
 @drivereight: I fit at 5'6", being vertically challenged isn't bad all the time :-)
  • 2 0
 @drivereight and @ATV25 fell short on their comments. they failed to measure up
  • 13 7
 It's called "asian fit" - huge target audience!!!
  • 5 0
 @a-aha: Yao Ming rides a 36”
  • 3 15
flag CircusMaximus (Feb 13, 2020 at 9:03) (Below Threshold)
 @a-aha: racism alert.
  • 15 4
 @CircusMaximus: it's only an alert if you are offended instead of amused
  • 4 6
 @a-aha: Translation: "I can say whatever dumb thing I want and shouldn't be called out for it."
  • 2 11
flag CircusMaximus (Feb 13, 2020 at 10:39) (Below Threshold)
 @a-aha: it’s only amusing if you appreciate racist crap.
  • 9 1
 @CircusMaximus: I thinknyour are honestly overreacting. You do realise that "asian fit" is a common expression in the sports and outerwear industry and all major brands acting worldwide are selling asian fit size runs? My comment is neither dumb nor a racist prejudice... It's pick on an everyday topic in sporting goods manufacturing with a wink...
Oakley Googles for Kids and women are for example the same sizing as their asian fit.
  • 6 4
 @CircusMaximus: nope, not racist, @a-aha is right. Maybe could have been worded "this will fit smaller asian (and latino!) riders well"

Heard from the owner of trailcraft "kids" bikes that he's getting orders from smaller Asian riders all the time, selling bikes to indonesia, phillipines, thailand etc... There is very much a market for small FS bikes.
Also as a-aha points out, so many apparel brands do market specific fits.

Does me talking about "euro fit" road jerseys (where a large fits like a US small) make me racist too?

Get off your high horse.

PS I'm part asian and have been doing bike fit for ages.
  • 2 4
 @dontcoast: ok ok easy guy. Was honestly not aware of the term Asian fit. Thought it sounded off color. My bad for calling it out.
Still won’t be in my personal lexicon but whatever, carry on.
  • 2 0
 the thing I am most astonished about with all this is that nobody makes fun of me for my phone autocorrecting goggle to Google...
  • 1 0
 @CircusMaximus: Not racist. Hate everyone the same. ;-p
  • 1 1
 @a-aha: I'm Italian, so does that mean I like soy sauce on my spaghetti LOL
  • 3 0
 @ATV25: I'm Austrian, does that mean i own a Lederhosen? Yes, absolutely!
Cheers neighbour!
  • 1 0
 @a-aha: Cheers to you, friend !
  • 1 0
 @CircusMaximus: haha cheers. glad it got clarified.

yeah not a go-to expression for me either, i just like to say "fits smaller" lol. agree we could do with less loaded-seeming terminology...generalization will happen, this one was def innocuous at least
  • 16 0
 Holly shit, that little guy shreds.
  • 2 0
 First thing I noticed too..!! Little ripper!!
  • 3 0
 My kids watch him on YouTube sometimes. That little guy does like 30ft backflips at Nitro Circus (onto Resi bag) and was/maybe is a world class BMX racer. Kid is no joke. The best ever seen at this age.
  • 12 0
 The 26" bike looks like it would be great for small adult humans and actually, they weight really isn't any different than other comparable bikes. The price point is definitely the key redeeming feature here though, because there's already 27.5" bikes available in this frame size, but they're all 50% more cash.
  • 8 0
 Shhhh they don’t know that, but we do...at these prices, will finally be able to buy a bicycle again!
  • 15 2
 Parents need a 27.5/26 mullet bike if they want their kid to stay competitive.
  • 2 3
 Ride more or send them to bike camp and develop some skills! OR just take drugs!
  • 14 1
 They need to make it fit riders up to 5’7”!
  • 9 0
 Yes!!! Finally a company is getting the clue that "REAL" kids bike are a legit market.
  • 3 0
 Adult kids bikes!
  • 6 0
 Commencal, Rocky and Norco as well as others make great kid bikes
  • 3 0
 Spawn cycles has been turning out great bikes for years. Lighter and cheaper than this one too
  • 1 0
 @peytodog: spawns new 24" Rokk has some pretty bad geo tho. It's a fortune and the suspension isnt custom tuned for a lid either. It's just nice adult suspension with a light tune. The Manitou kids stuff is unreal. Plus the Rokk in26in version has 450mm chainstays...which is laughable for a kid.
  • 1 0
 @jaydawg69: My son current has a Commencal Meta 27.5 Jr. and it is a good bike. I just think more companies need to tap that market.
  • 8 0
 No sneaky marketing video to go with it? I understand Christopher Walken was expensive, but I'm sure baby shark was available.
  • 8 0
 I suppose it's a fun time to be a 5'2" adult.
  • 2 0
 The party was never over!
  • 7 0
 They’ll make some minor profits.
  • 4 1
 Hey YT, is this the gimped JUnit fork with the crappy single chamber air spring or the highend expert spring? Hoping for the latter, its light yrs better when testing both. This is where the Norco cheaper model (same price as this) falls short. Crappy spring and lame shock (relative to the Manitou stuff at least). Itd have been to tack on an extra 100$-200$ and get GX 11sp btw and kids sized 140mm cranks for a 24in...or have a frame only option. Regardless this is an amazing bike and I'm glad you went with the full JUnit suspension. The fork is badass but I think the McLeod Nino is perhaps even better, which is saying a lot.
  • 4 0
 @Svinyard, there's some close-up pictures on YT's website that show the non-Schrader air-side top cap, so YT spec'd the Expert Air spring, not the single-chamber TS Air.
  • 3 0
 @kbeutin: nice find! Good on YT
  • 4 1
 Freakin eh! This even has the new Sunringle Duroc wheelset (Manitou company), those are seriously nice wheels. I'm no YT fan and their adult bikes aren't the value they used to be...but this 24" bike is an insane value with a killer spec. Only issues are the NX (it could have been GX tbh) and the too long 155mm cranks (for the 26"). This is by far the king of FS kids bikes. Commencal is close but heavy...Norco is close but a big step down in suspension spec and wheels and tires etc. Spawn isn't even close anymore and costs nearly 1000$ more after shipping.
  • 4 0
 Not to mention, Manitou forks and shocks are as good as anything out there, easy to service, just underrated.
  • 1 0
 My son uses the 152mm suntour xeron cranks on his mullet 26/24 bighit grom, 155mm on his race bmx.
They used to come with 165 or 170mm. This is a new day.
  • 7 0
 So 26" is kids size now. It's official, I'm riding children's bike ????
  • 3 0
 I guess I am too
  • 1 0
 I have new bikes and old bikes and a have to admit the one I feel I gel with the best is the ol' 26" Slash.
  • 5 0
 26 is dead? Kids bikes, adult pricing!
  • 4 0
 Eff the kids, the adults are buying them for themselves cause 26 is the fun bike!
  • 1 0
 Im 5-6 and Im uncomfortable in most bikes. Bikes that I feel perfect is expensive for me but this bike has nice price. Also I was using DirtJump for a long time but now I have downhill bike so Im thinking to use this bike as slopestyle/trail bike
  • 1 0
 in this age of ever increasing reaches and wheel sizes, they might sell a fair few of these to shorter riders who feel left behind by modern standards. I know a few girls ~5ft and if they wanted a new bike there's probably not much they could really feel at home on
  • 4 0
 Who's spending 1500+ on a kids bike?
  • 3 1
 I will now, been waiting for a 'decent' 26" bike, never going to ride a 29er ever. So kids section it is!!
  • 3 1
 It’s sad more people don’t. My 8yo is on a custom build complete with factory 36s. I always see dads out there on super fancy decked out bikes and their kids on Walmart junk. It’s sad.
  • 1 0
 @Pixels: Stop talking about me bro.... LOL
  • 1 0
 Ooooooh snap! I’d better not let my son see this! He’s been begging for a ‘My size Jeffsy’ for too long! Lol
Love that he just wants to be like me though. Love dad-life!
  • 1 0
 When I was young my parents couldn't buy me a bike like this because this kind of specs specifications were not available thanks to this generation my kids are exploring in new wave and style
  • 3 0
 26ftw!!! cool to see they are building bikes for little Mountain goats!
  • 2 0
 Little adult mt.goats!
  • 7 4
 Norco releases kids mountain bikes.

YT: Hold my beer.
  • 4 10
flag pargolf8 (Feb 13, 2020 at 8:13) (Below Threshold)
 Did you think of that yourself? Authentic!
  • 3 3
 @pargolf8: Not authentic, but apt.
  • 5 2
 @chriskneeland: VERY apt. The Norco FS Build at 1899$ is a huge step down in spec. You'd have to drop 2500$ on the upper tier build to get these specs (plus a dropper). Lower Noroc build: tires suck, wheels suck, fork has their cheapest single chamber air spring (a big deal when as you'll run it at 30psi), only 10sp, brakes are better tho and dropper. Geo isn't as good as this imo but its close enough. YT killed it and crushed the competition.
  • 1 4
 @chriskneeland: definitely not. Generic even
  • 5 1
 @pargolf8: Thanks for your unsolicited douchebag opinion.
  • 2 3
 @chriskneeland: no, thank you!
  • 2 0
 That kid’s 26er has geo like my „L” Giant Reign from 2008... Boys never grow Smile
  • 4 0
 Jeffswee
  • 3 0
 Stil waiting for their slopestyle bike
  • 4 0
 LOOK AT THAT KID SHRED!
  • 1 1
 For real, who is that? Killin it
  • 2 0
 If this kid can ride a bike that's proportioned to him like this, I need a 36" wheeler.
  • 1 2
 14.2kg!!!!...for a child bike...does it come with a tub of Creatine and a Crossfit membership?

There are 26 wheeled kids out there at 10-11kg (Creig/Frog 72) at half the price...I concede that these are not full sus but my woes sons would not have the strength left after the mandatory hill climb on a 14.2kg bike...
  • 1 0
 these are downhill and park bikes.
  • 2 0
 You are comparing a Range Rover to a lotus Elise! The bikes are made for a very different purpose and weight is a necessary evil on a full suspension bike. I know which one my lad would love to take to morzine this year!
  • 1 0
 REI is putting 26ers on its smaller mtbs too:

www.rei.com/product/142876/co-op-cycles-drt-32-bike

But the jeffsy primus is still cheaper and way cooler.
  • 6 4
 Cue the '26 for life' comments in 3....2...1...
  • 19 0
 More like 26 through middle school
  • 7 0
 26FOREVER!
  • 1 0
 Mini shredders.... (sung to the tune of that old mini cheddars add, which was on the tune of Beach Boys I get around)
  • 3 1
 Ah man... Just ordered a Transition Ripcord for my son last week...
  • 4 1
 Bro, cancel that. Norco makes a MUCH better FS bike now. And there is this too. This Manitou suspension is unbelievable.
  • 1 2
 Bro, dont cancel that. I bet your kid loves that ripcord. Transitions are the shizzz
  • 2 0
 Ripcord is junk. Unresponsive suspension. Go for a Rocky Mountain reaper or this instead. Way better bikes.
  • 2 0
 This!!! We need more of real kid's bikes instead of kid's toy bikes.
  • 2 1
 So has the bike industry just admitted they were forcing millions of us to ride kid bikes for years??
  • 5 3
 26” has more World Cup wins, Title, and sales to date! Most parts in the market still fit 26” platform.
  • 2 0
 @drivereight: For it's era yes, time will inevitably change those stats.
  • 4 2
 Fits up to 5'3. Have fun, manlets!
  • 2 0
 Why not use the McLeod on the 26" version? It's cheaper and better.
  • 3 0
 Its their Nino tune as well. We have it on our 24" Its insanely nice. Light and day vs an adult shock. Not sure why it didn't make it on the 26". Ours is 145mm of travel so it'd fit I'd guess.
  • 2 3
 Trailcraft all the way. Picked up a Timber 26 for my 11yr old son and it totally accelerated his riding ability and confidence. Actually pretty mind-blowing what he has been able to accomplish on this bike thus far.
  • 1 1
 Trailcraft is only 100mm travel. Way too little unless it’s only for xc.
  • 1 0
 Make Kids Bikes Bad Again! I'm just jealous I dint have a bike like this when I was a grom
  • 1 0
 did't even read the article. just the title. an affordable 24 26 is just overdue. perfect.
  • 1 0
 can the 26 be converted into the YT Play? because thats the bike I actually want YT to start selling.
  • 1 0
 Looks like everyone’s answered, so I’ll add my Instagram thumbs up tup
  • 1 0
 i bet the reach of my banshee scream 98 in small was also sub 400
  • 1 0
 Oh man, bad time to not be a kid. Actually no different than any way but..
  • 1 0
 What size axles on the 26"?
  • 1 1
 15x100 and 12x148
  • 1 0
 Jeffsy was a race car driver
  • 1 0
 It may be a porcupine.
  • 1 0
 Yeah but his elephant migrated south in the winter
  • 1 0
 @dirtyburger: goldfish come in all sorts of colours.
  • 1 4
 As long as they don't deck it out in e13 garbage like every other bike they sell, which it looks like they didn't, it might actually hold up to the abuse a kid can dish out. The suspension items look like they'll be a problem, I can't wait to try to get tech info on the "130mm Machete JUNIT fork and McLeod shock", that should be a nightmare.
  • 1 0
 Now the bike name ''Jeffsy" is more befitting.
  • 1 0
 instead of young talent---grom talent
  • 1 0
 Welcome to the new reality, where 26" is "kid's"
  • 1 0
 Awesome, signed! Having 3 boys this is the most welcome news
  • 1 0
 That's good they'll have a new 26inch wheel supplier
  • 1 0
 I envy dentist's kids
  • 1 0
 26 kids are beast bruh!
  • 1 0
 Give kids hard tail!
  • 3 4
 sold out
  • 1 0
 From the article:
"Available from March in Europe and from mid-March in the US."
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