Bike Check: Barča Průdková's Unno Burn Enduro Race Bike

Jun 14, 2023
by Matt Beer  


By far one of the wildest and least common bikes seen on the Enduro World Series, or anywhere for that matter, has to be the Unno Burn. This bike in particular belongs to Barča Průdková of Team Challenge One and takes a boutique frame to the next level with build that includes components like DVO suspension, a chain damping device, and an aftermarket derailleur cage with oversize jockey wheels - this isn't a cookie cutter bike build from the usual brands.

If you missed the launch of the Burn, there are number of details that grab our attention. The first would be the kinematics of the Burn's dual-link design. With a leverage ratio that begins at 3.5:1 and ends all the way down at 2:1, it's no surprise to see Barča running DVO's Jade X coil-sprung damper. Unno suggests running the 165mm rear wheel travel at a deep 35% sag. Unno also built in a high anti-squat figure of 120% when sitting at one-third of the travel.

Barča is one of a few racers, like Hattie Harnden, coming from a cross-country racing background (not BMX) and making the transition over to enduro racing. This season, the Czech racer nabbed a 6th place finish at Blue Derby, Tasmania, to back up two top-ten finishes in 2022.

Team Challenge One works closely with Emilio Capaldi of Capaldi Suspension tuning to modify her setup depending on the given track conditions. Likewise, the chainring size, tire specifications, and choices for inserts varies at each EDR stop.
Unno Burn

Barča Průdková

Age: 26
Nationality: Czech
Height: 173 cm / 5' 8″
Weight: 54 kg / 119 lb
Instagram:@teamchallengeone

bigquotesJust before the race in Pietra Ligure, we tested both shock types. The Topaz air shock is more for flow trails and JadeX coil shock is better for big drops and jumps and rocky sections. I personally prefer an air shock - it's more like the XCO suspension, but for this race I have a stiffer coil shock adjusted exactly to my feel. It helps me in the pumptrack sections and to absorb rocky sections.Barča Průdková

UNNO Burn
UNNO Burn Details

Frame: UNNO Burn, size 2, 165mm travel
Fork: DVO Onyx 170mm travel, 62 psi
Shock: DVO JadeX 230x65mm, 400 lb/in spring
Wheels: We Are One Composites w/ Industry Nine Hydra hubs
Tires: Michelin Wild Enduro Front - 29x2.4", 16 PSI / 27.5x2.4", 19 PSI
Inserts: Cushcore Pro F/R
Shifting: Shimano XTR shifter and derailleur w/ Benozzi Fastlight cage, Taya TOLV chain
Crankset: Shimano XTR 170mm, Renthal 1XR 34T ring w/ Ochain R
Pedals: HT T2
Brakes: Shimano XTR w/203mm Galfer Shark rotors and pads
Controls: Renthal Fatbar Carbon35 Lite 30mm rise, Apex 40mm stem, Traction Aramid, SendHit Nock V2 handguards
Post & saddle: KS LEV Carbon 150mm
Weight: 15kg / 33lb
More info: unno.com

UNNO Burn
The stem is slammed on top of the headset top cap that feeds the cables in through the 120mm tall head tube. There are also a few spare parts stashed on the bike. A quick-link for the chain is taped to the cables and zip ties are tucked into the bottom of the steer tube.

UNNO Burn
Protecting the silver paint and clearcoated carbon finish is a tailored protective kit from Ride Wrap.
UNNO Burn
At 173cm tall, Barca is running the S2 size frame with a 470mm reach and a 40mm length stem.

UNNO Burn
A side-load cage cradles a water bottle between the nearly parallel top and down tubes.

UNNO Burn
UNNO Burn
The seat tube is just as long as it looks at 460mm.

UNNO Burn
Up front, there's a 170mm DVO Onyx with a 44mm offset. The pressure is set to 62 psi, rebound is 8 clicks from closed, low speed is 4 clicks out, and high-speed compression is wide open.

UNNO Burn
photo
Barca is running a 400 spring with the rebound 2 clicks from closed and the bladder pressure is set to 170 PSI.

UNNO Burn
SendHit Nock V2 handguards help to protect brake levers in two ways; reduce the levers from rotating on the bar in the event of a crash, and to also ward off pesky branches that might try to grab them unexpectedly.
UNNO Burn
UNNO Burn
A 35mm diameter Renthal Fatbar Lite carbon bar with slide-on grips is an interesting combo - control and cush.

UNNO Burn
Ochain's latest "R" version of their chain damper allows you to externally adjust the degrees of float. Barca has that set to the 9-degree setting and is running a 36-tooth chain ring - beastly!

UNNO Burn
Benozzi Engineering's Fast Light derailleur cage offers more ground clearance than the stock Shimano XTR one and the large wheel is said to reduce drag.

UNNO Burn
A Taya TOLV chain adds to the unique parts list.
UNNO Burn
HT's T2 enduro clipless pedals tie into the paint scheme well.

UNNO Burn
The de-badged We Are One Composites rims are two different widths to tune the tire profile; 27mm wide on the rear wheel and 30mm up front. At the center are 32-hole Industry Nine Hydra hubs.

UNNO Burn
Barca is running the lighter casing Michelin Wild Enduro "Front" tire with taller lugs than the "Rear" specific version.
UNNO Burn
The rear caliper is tucked neatly inboard and still runs on a regular 148mm-wide rear hub. Galfer 203mm Shark rotors are bolted up front and rear with G1652 E-bike specific pads in the Shimano XTR calipers.


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86 Comments
  • 81 0
 An otherwise beautiful bike, but that seattube/mast somehow screams 'Volvo Ocean Race boat' instead of 'Enduro World Series bike'.
  • 8 0
 the bike just needs a sail
  • 3 0
 @BornOnTwo: I think it already has one
  • 2 0
 It's just "The Ocean Race" now, but yeah.
  • 2 0
 The bike generally seems to imitate a very-well designed step-through cruiser.
  • 3 0
 I'd race the hell out of the Enduro World Regatta Series on one of those things.
  • 7 0
 If Zoolander got into mountain biking he would buy this bike and wear Pit Viper shades.
  • 1 0
 @karatechris: Not far from the truth
  • 43 0
 Interesting to see the most boujee of boujee brands using plastic headsets with large open ports to the bearings.
  • 24 0
 No longer handlaid in Barcelona, and prices as boujee as ever. I don't doubt the bikes ride amazing, but I don't lust after Unnos anymore.
  • 15 0
 @chaoscacca: I never understood all the love for them.
  • 4 0
 @chaoscacca: made in China now
  • 3 0
 @Pmrmusic26: Booooo
  • 12 0
 @somebody-else: When the first gen was released, their design aesthetic and raw carbon weave really stood out. Nothing came close at that time. There is also Cesar Rojo at the helm to give those beauties their racing cred. I thought the Burn looked good, and then was blown away by the Ever, truly deserving of the boutique bikes label. Of course, they're not to everyone's tastes, but damn did they stand out for me. Now they take their production out East, release that garish golden seatmast thing and introduce headset routing. Well I have Antidote and WeAreOne to drool over now.
  • 9 3
 @Pmrmusic26: China or Taiwan? Taiwan makes A+ bikes. Mainland China not so much.
  • 4 1
 I don't have so many issues with Taiwan or Vietnam or anywhere in Asia, but I always appreciate when bikes are made someplace besides Asia. Whether it's the Americas or Africa or Europe, etc. It's an easy way for the consumer to distinguish between brands, even if its a very difficult thing for manufacturers to do.
  • 6 0
 @chaoscacca: so, it’s a uh-no for you.
  • 5 0
 @somebody-else: Hard agree. I've never understood the ppl lusting after them. Bikes made to look garish for the sake of aesthetics. I'm a much bigger fan of function over form.
  • 2 0
 @chaoscacca: i once got laid in barcelona...
  • 5 0
 @funkzander: handlaid like the bike?
  • 2 0
 @Mac1987: hand laid in China now bro
  • 1 0
 @Pmrmusic26: with an happy ending?
  • 22 0
 I was not familiar with her, google her, she's a legit XC / Road cyclist and competing in some big competitions.....impressive to see XC racers transition like this and do well.
  • 10 0
 Just look at Hattie, from CX and XC to enduro and now a DH Top 10 in her first race
  • 2 0
 Not the first one tho, Cecile Ravanelle was a XC racer initially and to date is the GOAT of women's enduro riding. For men I remember that Thomas Lapeyrie used to race XC also before going full Enduro.
  • 5 1
 @RadBartTaylor I remember people discussing this, probably in the Mike Levy Vs Richie Rude power test article.
Some argued that Nino would crush Richie at least in W/kg, even in short 10min efforts.
Others said "nah, XC riders train for 90min efforts and are not as good as enduro racers on 10min efforts" arguing that if they were, they would switch to Enduro, which "never happens, only BMXers switch to XC etc, not the other way around, because they can't ".

I believe that XC is simply more popular, brings in more revenue thus being very attractive to pros. Today's XC is crazy technical and physically demanding, I am sure and most of those racers would fare really well in enduro, or even DH
  • 2 0
 @Uuno: 10 min test, Nino would crush Richie most likely from a wattage perspective, let alone W/KG. Honestly, I could probably beat Richie on a 10 min power test, I know I can (or could have) on a rowing machine, but I trained on one a lot. With that said, he'd be at the top of the list from max Watts perspective, strength perspective and being a explosive athlete, all which relate to Enduro better than Nino's fitness.

When I was super fit for XC / CX, I was a faster local racer, a single enduro stage would absolutely demolish me. Guys I'd crush on local XC climbs with absolutely SMOKE me on enduro stages - the fitness is so different. With that said, I do think a top XC rider that has explosive power, like Nino but probably NOT like some of the small TDF climbers, could transition well.

I bet Richie has elite level sprint and good 20-30 second power and has trained enough that he can ride a whole day, he'd probably be elite in BMX too, but as we can see, many different people can do well, I highly doubt Sam Hill or Melamed have the same type of fitness.
  • 2 0
 @RadBartTaylor: why do you doubt Melamed or other racers have the level of fitness as rude? Melamed seemed to do good on those long stages at the last EDR.
  • 3 0
 @xciscool: I said same "type" of fitness, they are probably more fit in other ways. You put Rude on a BMX or a track bike, he'd be elite...just look at how he's built and what / how he lifts, most smaller guys won't be able to touch those numbers....but in no way am I saying others are not as fit or MORE fit in other ways.
  • 12 0
 Stupid question incoming. Does the hub engagement play a role in pedal kickback? If so, why run a high engagement hub like an i9 and a device that effectively lessens the engagement? I know it doesn't actually lower the engagement in the hub, but the Ochain effectively puts some slack between the pedal stroke and the hub engagement, yes? Would simply running a hub with less engagement stop the chain from tugging on the pedals during suspension movement in the same way?

Admittedly my understanding on the Ochain is limited. I understand how it works and why you would want one, it just seems that an i9 and an Ochain are fighting one another. There is also a possibility that I am 100% talking out my ass. Maybe even a 105% chance.
  • 8 1
 With the ochain i think you are always guaranteed to have that float/anti kickback present. Even with a low engagement hub, depending on how close you are to the engagement point you could still get kickback.
  • 7 4
 You’re right. A hub with .5° engagement like the Hydra with a 9° OChain crank is stupid.
  • 1 0
 @FaahkEet: OK, I think I get it it. Just for the sake of conversation, I wonder how it would work with something like an Onyx that is truly instant engagement? I assume it would be the same as any other high engagement hub.
  • 3 0
 It's a good observation, I don't think it conflicts and is a bit counterintuitive, even for me, so maybe I am wrong....but engagement pedaling forward (hub) vs disengaging pedaling backwards (Ochain) do not always happen the same time.

Especially in situations where high engagement is necessary, tech climbing, the Ochain in theory won't be operating.

You could certainly argue high engagement hubs, in general, are not needed for Enduro but in my mind they are separate and mostly independent systems.
  • 2 0
 @RadBartTaylor: That's a good point. Chain-less enduro!
  • 1 0
 @grnmachine02: it’s an incredible feeling combo!
  • 5 2
 @Someoldfart: Not entirely actually. The OChain guarantees 9deg will be available whenever Barča's not pedalling - that is, when she doesn't want pedal engagement. The high engagement hub means that the engagement is always between 9 - 9.5deg (depending on where the hub pawls/ratchet are in their rotation) once she gets on the gas. The OChain R also lets her select 4-4.5deg or 12-12.5deg at the flick of a switch too.

A slower engaging hub would broaden that spread to, say 9-19 deg for a DT 350 with a 36 pawl system.
  • 9 0
 Awesome build (duh), interesting look. I love it and don't love it at the same time.
  • 5 0
 Most MTB product websites are pretty horrible to navigate and needlessly layers-deep, but Michelin's has got to be the worst. Do these companies not do any user testing for their websites? Apparently the new Wild Enduro tires do exist, but you can only find them mentioned in a comparison chart.
  • 2 0
 I think those new tires are still not officially presented yet. I know Bruno,another Junior rider of the team,he had a video review of the bike and some words about the new tires. Totally agree Michelin had some serious marketing issues with their tires. Those new tires are a mix of the DH 22 and Wild Enduro in the front.
  • 1 0
 French companies seem to either have crazy convoluted websites or just no internet presence at all.
  • 5 0
 And you all thought my Forbidden Druid had a smokestack for a seat tube!! Ha. Almost looks like the seat tube was an afterthought
  • 4 0
 are the grips safety wired on? I'd love to see the other side. I safety wire mine and always looking fro better ways. Lockon just don't work for me. Always hurt my hands.
  • 3 0
 Have you tried spray paint?
  • 2 0
 @Stokedonthis: another prop for spray paint. Usually clear for me and highly recommended
  • 4 0
 I coat the bar & inside of the grip with IPA. leave them overnight. never had an issue with them moving.
  • 3 1
 @scantregard: that goes in your mouth not in your grips....Smile
  • 2 0
 @Stokedonthis: yes I do that also.
  • 2 0
 @Stokedonthis: hair spray works well too
  • 1 0
 @chrismac70: Yeah I use the cheapest hair spray I can get from like Dollar General or Dollar Tree.
  • 2 0
 @chrismac70: works good, I used it for years, but it is water soluble so does not work well in the rain....
  • 6 0
 All I can see is loads of dirt being thrown directly into my coil every second of every ride
  • 6 0
 Futuristic design ruined by square, road bike geometry with that 460mm seat tube.
  • 5 3
 Its like somebody built a bike out of the pinkbike comments section and then threw in a internally routed headset as an homage to saying "f*ck you, get rekt poor people who can't afford to have somebody else work on their bike and cant afford new bearings each race"
  • 6 0
 When a cross country racer talks about suspension setup
  • 1 0
 I find the design appealing, but then I usually like things that tend to break the mold. In terms of function though, the seat tube is too long for the size. For me at 163cm 460cm of seat tube on the smallest size would mean I have to run a very short dropper post. This alone would make me look elsewhere no matter how much I like the looks.
  • 4 0
 That tread pattern looks new for wild enduros
  • 2 0
 definitely new, wonder when those will be out. i like the grey sidewall patches as well
  • 1 0
 Yes those are new tires. I think there would be those new enduro tires and maybe a wider version of the DH current tires and a new DH16 hehehe. Those look great,Michelin make good rubber compounds and tires,but had very bad marketing and they are slow to improve or change.
  • 1 0
 Anyone notice the Smashpot top cap in one of the pictures that is absent is the rest… I wouldn’t ride without mine either Smile
  • 3 0
 Looks-wise that reminds me of my first-gen Turner DHR from 2001
  • 4 2
 You've got the name wrong. She's Barča (Barbora) Vojta now. She got married last month.
  • 2 0
 Glad the pic of the internal headset routed cable crap was at the top so I could just skip to the comments. Time saver.
  • 2 0
 Too expensive frame (BTW not made in BCN anymore), headtube routing and nosense tall seattube.. no thanks
  • 4 0
 Looks terrible, next
  • 1 0
 This is a horrible sentence for my tiny brain-"rebound is 8 clicks from closed, low speed is 4 clicks out, and high-speed compression is wide open."
  • 2 0
 "all I need, is burn"
-deep purple
  • 2 1
 yes yes yes!!!! awesome and the seat tube mast looks cool, its different. Also no footed cans will be easy haha
  • 2 0
 Fixed the seat tube: www.pinkbike.com/photo/23074685
  • 2 0
 Come on Michelin, drop the new tire already.
  • 2 0
 surely this seat tube will snap at some point !
  • 1 0
 Bike looks awesome! Love that silver color. Hope the Unno riders get some good time on the next race.
  • 2 0
 Imagine doing a can can mid-air with this bike... does that even count?
  • 2 0
 Have u seen Blaha's ActoFive bike? Thats unique !
  • 1 0
 Beginning model 18+) I love being photographed in the nude Please rate my photos at ➤ u.to/mWPGHw
  • 1 0
 Seat tube looking a little suspect...
  • 4 0
 Looks like a taint assault lance I'd still take the bike if someone was offering it to me though.
  • 1 0
 @schlockinz: just spit coffee oot me nose laughing!!!
  • 1 0
 Wow- that thing is ugly! IMHO
  • 1 0
 Looks fab. Definitely drool worthy
  • 1 0
 I was about to say, it looks like a ladie's frame and it is.
  • 1 0
 love and hate feelings at the same time for this bike
  • 1 0
 When we'll see a carbon fibre, upgraded SAN ANDREAS style monocock frame?
  • 1 0
 Burn baby burn!
  • 2 1
 Looks a bit snappy.....
  • 2 1
 Burn it with fire.







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