Nukeproof Releases a Mullet Version of the Dissent Downhill Bike

Oct 8, 2020
by James Smurthwaite  
Nukeproof Dissent

As it becomes more and more common on the World Cup circuit, Nukeproof have become the latest brand to offer its downhill bike in the 29" front wheel, 27.5" rear wheel, mullet configuration.

With the brand already producing 27.5" and 29" versions of its Dissent downhill bike, it seemed like an obvious move for Nukeproof to combine the front end of a 29er with the rear end of a 27.5" bike. However, this isn't a simple bodge job and Nukeproof have apparently been experimenting with the mixed wheel geometry before they became commonplace on the World Cup circuit last year. They say, "A few years ago, before the world went “Mullet mad”. A very clever man in our team designed into the Dissent the function to mix a 290 front triangle and a 275 rear triangle together to form a perfect geometry 29” front and 27.5” rear wheel, we called it a 297." The result of this was that when Adam Brayton asked to try a mullet Dissent last year, Nukeproof was able to provide him one on the very same day.

Nukeproof Dissent

That same mullet configuration is now available for the public to buy. There's very little change here, apart from the wheelsize, with the 4 position progression adjustment on the pivot and the +/- 5mm adjustment on the chainstays. You can find more info on the features of that bike that launched last year, here. The biggest change will come from the availability with 27.5" front and rear now only available as a Small while 29" front and rear and mullet configurations will be available in Medium, Large and Extra Large sizing.

Nukeproof Dissent

Two models of the Dissent 297 will be available to buy, a base spec Comp and a higher Spec RS.

Nukeproof Dissent 297 RS

Nukeproof Dissent

Frame: Nukeproof Dissent 297 Alloy, 200mm Travel, custom triple butted hydro-formed tube set, custom tuned rear shock configuration, internal cable routing, Enduro bearings, threaded bottom bracket, boost 157mm rear axle spacing, 3D contoured frame protection
Fork: RockShox Boxxer Ultimate, Charger 2, 200mm Travel, 46mm Offset, BOOST 20x110mm, Debonair, Boxxer Red
Shock: RockShox Super Deluxe Coil Ultimate DH RC, Custom ML Tune, 250x75mm, Bearing End, Red Coil Spring (M=350LBS/L=400LBS /XL=450LBS SPRING)
Front Wheel: Nukeproof Horizon V2 DH 29", 20x110mm
Rear Wheel: Nukeproof Horizon V2 DH 27.5", XD Driver, 157x12mm
Tyres: Front: Michelin DH22 29”x2.4, TLR/ Rear: Michelin DH22 27.5”x2.4, TLR
Crankset: SRAM XO1 DH Carbon X-Sync, 165mm, 34T, DUB83mm, Black
Chain Device: MRP Mini G4 32-36T ISCG-05
Drive: SRAM XO1 7-Speed, Red
Brakes: SRAM Code R, Sintered pads
Rotors: SRAM Centreline, 220mm (Front), 200mm (Rear)
Handlebars: Nukeproof Horizon 38mm Rise, Width - M780mm, L800mm, XL800mm)
Stem: Nukeproof Horizon Direct Mount, 45mm, black
Saddle: Nukeproof Vector DH, GreySeatpost: Nukeproof Neutron, 30.9mm, 300mm, 0 Offset.
Grips: Nukeproof Sam Hill Signature
Weight: 16.64kgs/36.6lbs (Tubeless)

Nukeproof Dissent 297 Comp

Nukeproof Dissent

Frame: Nukeproof Dissent 297 Alloy, 200mm Travel, custom triple butted hydro-formed tube set, custom tuned rear shock configuration, internal cable routing, Enduro bearings, threaded bottom bracket, boost 157mm rear axle spacing, 3D contoured frame protection
Fork: RockShox Boxxer Select Charger RC 200mm Travel, 46mm Offset, BOOST 20x110mm, Debonair, Gloss Black,
Shock: RockShox Super Deluxe Coil Select R, Custom ML Tune, 250x75mm, Bearing End, Black Coil Spring (M=350LBS/L=400LBS /XL=450LBS SPRING)
Front Wheel: Sun-Ringle Duroc SD37 Comp 29", 20x110mm
Rear Wheel: Sun-Ringle Duroc SD37 Comp 27.5", Shimano Driver, 157x12mm
Tyres: Front: Michelin DH22 27.5”x2.4, TLR/ Rear: Michelin DH22 29”x2.4, TLR
Crankset: SRAM Descendant DH, 165mm, 34T, DUB83mm
Chain Device: MRP G4 CS 34-38T ISCG 05
Driver: SRAM GX 7-Speed
Brakes: SRAM Guide RE
Rotor: SRAM Centreline, 220mm
Handlebars: Nukeproof Neutron 38mm Rise, Width - M780mm, L800mm, XL800mm
Stem: Nukeproof Horizon Direct Mount, 45mm, black
Saddle: Nukeproof Vector DH, Grey
Seatpost: Nukeproof Neutron, 30.9mm, 300mm, 0 Offset.
Grips: Nukeproof Sam Hill Signature
Weight: 17.4Kgs/38.35lbs (Tubeless)

Nukeproof Dissent

Info about the rest of the range can be found on Nukeproof's website, here.


74 Comments

  • 34 0
 I noticed that Nukeproof's latest Reactor range is priced the same as a comparable Stumpjumper Evo (the Reactor Elite and Stumpjumper Comp, SLX builds, $4000 vs $4100). My main reason for buying Nukeproof over a traditional brand was the great product at a lower-than-normal semi-direct-to-consumer price. I hope their prices don't keep increasing or that reason will be gone.
  • 2 0
 I agree, @rickybobby18 i was looking for a reactor as i know the megas in previous years were good value but the reactor was overpriced. TBF most of them are sold out so i don't think they'll lowering any time soon.
  • 1 0
 *dp
  • 2 0
 The Reactor does come with Performance Elite level suspension vs the rhythm on the Evo comp.
  • 3 0
 You have to look apples to apples. My mega comp was 2100 to my door. the build sheet matches the aluminum Slash 7 at $3500. I think they still have some room.
  • 1 0
 @fruitsd79: Trek is now really overpriced compared to Specialized though. The Stumpjumper EVO brought the price point down pretty close to direct-to-consumer for some of the builds (Carbon bikes with SLX and second-tier Fox suspension). Trek/SC/Yeti/etc. are still a $1500-$2000 premium for mid to high range builds.
  • 8 0
 So this is really happening now?
I don't mean specifically this bike, I just mean bikes in general - the mullet mixed wheel size is now officially mainstream.

I'm not against the idea, just still a little bit surprised it really took off
  • 13 0
 Welcome to the mx age
  • 9 1
 29% of the the rear wheel is just back there bouncing around and getting in the way.
  • 9 0
 I thought it was silly until I tried it. It was a tangible improvement, even on a bike not at all optimized for it.
  • 6 0
 It worked 20 years ago why not now.
  • 2 0
 @fullendurbro: I also had noticable results going to a 29 upfront. Anyone with a L giant glory, if you run a 6mm reach set you wind up with a 13.7 bb going to mullet.
  • 6 0
 Bring back the BigHit with the 24"/26" tire combo!!!
  • 3 1
 Always on the hunt for something new to sell us
  • 2 0
 That's what they said about the bumble bee, but here we are. It just took someone to realise the spesh big hit had messed up by making the rear smaller rather than the front bigger.
  • 2 1
 Is that a 29er? Ugh!
  • 4 0
 Has anyone here tried 29/26?
  • 1 0
 It makes sense. I'm short and cannot ride a 29 in the rear as I get tire buzz. Mullet gives me the confidence/feel of 29 without the risk of losing my manhood.
  • 5 5
 Marketing hype. 99% of us mortals can't even ride a DH bike hard enough to warm up the rear shock never mind get any benefit whatsover from 29 inch or Mullet DH bikes. Plus, the mullet looks horrible.
  • 4 0
 Here's a naive assumption:
baring in mind that bikes generally allow for at least a 10mm fork travel differential, putting a 29" wheel on the front of a 27.5 bike with the fork travel reduced by 10 or 20mm will have no detrimental impact on geo and handling but offer all the benefits of a mullet set up. If you have an adjustable travel fork you could swap between the two up front.

Is that right or is there more to it. Thanks in advance to any engineer who probably (definitely) knows more than me.
  • 4 0
 You are correct, until you get a rock stuck in your front tire...
  • 2 0
 @craig7: Haha. Sorry, I meant with a travel adjusted 29 fork.

I have actually run this in the past and it was a good setup but wondered if it is basically as good as a purpose built mullet bike.
  • 1 0
 @tremeer023: You need to account for the 15-20mm longer fork as well as the front axle being ~15mm higher off the ground. I think you would need a fork with no less than 20mm less travel to keep weight balance, STA, reach, etc close to the intended range. That might be a bit strange on many bikes with similar front and rear travel. For example, putting a 120-130mm fork on a 150mm bike, or a 100mm fork on a 120mm bike. Could be just the ticket for some, but personally I would much rather have the extra travel up front
  • 1 0
 @showmethemountains: hmmm good point. You could probably end up over forking too much. I ran a 140mm 29 fork on a 140mm frame which gave a high front end. Good for steeper tracks but a bit much for general trail riding. No such problem with a hardtail.

I forgot it effectively increases BB drop too, although that could be a good thing.
  • 1 0
 @tremeer023: I had an over-forked hardtail and eventually got tired of the compromises. STA gets slacker and reach gets shorter. If it was just handling quirks then perhaps I could have gotten used to it, but it was harder to ignore the fit compromises
  • 1 0
 @showmethemountains: yes agreed, I think an overforked hardtail is a bit pointless for all those reasons (and more probably).
When I say no such problem with a ht I was meaning in terms of the front/rear travel difference. Always zero rear so you can reduce the fork travel to get the perfect fit.
I think we can conclude that a non purpose built mullet like I've described works ok but you may be compromised on fork travel which may give a front/rear sus travel imbalance on some bikes.
  • 1 0
 @tremeer023: Yes, I understand now about the hardtail travel balance. Good point
  • 2 0
 @showmethemountains @tremeer023 www.downtimepodcast.com/cotic-mixed-wheel-size These guys go pretty far into what affect wheelsize has on the bike, one thing that surprised me was they mentioned on some test laps, a 27.5 bike with a 29er front wheel and reduced travel fork to preserve the original geo, went faster than the stock 27.5 bike.
Not the most scientific test or necessarily applicable to all trails, but I was surprised at how much difference wheel size could make. It's worth a listen if you're curious.
  • 1 0
 @OpeSorryAbootThat: excellent, thanks - I will. Having tried both of those myself I definitely agree. The front wheel rollover alone makes a very noticable difference.
  • 1 0
 I ran my Supreme v4.2 like this. 180mm 29 Boxxer. It worked really well.
  • 3 0
 I've messed around with mullet setups - in order to preserve the geometry of the 27.5 bike, you would need to drop about 40mm in fork travel when sticking a 29er fork in front.
On my own bike, I dropped 20mm in fork travel (went from a 180mm 27.5 front to a 160mm 29).
The results were mixed.
Higher bottom bracket and slacker seat tube angle, much longer front centre and slacker head tube angle.

The bike was very fast going in a straight line but felt unbalanced in turns due to longer front centre and shortish chainstays.
The upside is that I can switch between 29 and 27.5 front wheels now with the 29er fork.
  • 1 0
 @ThinkTank45: yes I think it roughly calculates to 37 - 38mm difference with same tyre/rim width. 180 x 27.5 = 160 x 29 AC length so I see your logic. You maybe went about 17 - 18mm higher overall which is the same as I did when I tried it.

The ability to swap the front wheel between the 2 sizes is what I'm really interested in. I plan to do this soon with my current bike to have a regular 27.5 lightweight bmx style wheelset plus a dedicated dh mullet wheelset for those odd trips to Wales etc.
  • 5 0
 Tune into Cascade Components who are making mullet links available for conversions like the Hightower 2
  • 5 0
 #27.5aintdead
  • 26 0
 just taking a backseat
  • 3 0
 @sume36: you win
  • 1 0
 What's up with the gray/silver 40 crowns? Fox testing shorter offsets (finally)?

I know their parts list for 2021 shows a couple crown offset options but they're still kinda long and appear to be unobtanium as of now.
  • 1 0
 Didn't Chris Porter develop his own? I have a feeling these could be those on braytons race bike. Not sure tho.
  • 4 0
 @nickkk: Mr Brayton has some crowns from Hope Technology he’s trying out (advantage of being supported by a talented bunch of engineers with all the machines!).
  • 1 0
 @Nukeproofinternational: thank you for the answer. The dissent looks great btw.
  • 3 0
 omg omg please mullet the Mega AND Reactor next! highly underrated bikes that shred and handle better than most
  • 3 0
 Reactor for this year has been released so don't think there will be a mullet version. Mullet mega almost certainly as Elliot Heap has been running one at the EWS this year
  • 1 0
 @melonhead1145: Really? It looks 29 f/r in all the shots I have seen. Anybody heard when they will be releasing it?
  • 1 0
 @ashmtb85: Yeah it's mullet, I follow Elliot on Facebook and he has mentioned it is a mullet I'm sure. I expect they will release a 275, 279 and 290
  • 2 0
 That is a super nice looking rig. Love the look of the Michelin DH tires with the blue frame and the red accents
  • 1 0
 Anyone know how Nukeproof carbon frames are? And how dealing with CRC customer service is? Really looking hard at one of the new Reactors
  • 4 2
 CRC seems to be pretty notorious for having terrible customer service, at least for those of us in the US. I have no plans of ever purchasing from them again
  • 4 1
 I'm in the US, purchased a Nukeproof from CRC and had a few customer service issues and they were great and responsive and helpful. Really happy with the bike too.
  • 3 1
 I have a Vitus (also a CRC brand) and although the bike is great, dealing with CRC for after sales service has been terrible.
The fork broke, took a month of phone calls, extremely slow to respond emails and eventually contacted them via social media. Then took another 6 weeks to fix the forks.
Bike 8/10
Service 4/10
  • 1 0
 Cracked the head tube on my Mega, no major crashes involved. Just saw two cracks one day. Warranty was quick (but the shop made sure I'll stay without a bike for more than a month, cause why not)? No CRC involved.
  • 1 0
 @SeanC1: not sure what it is like for you guys in the US but I have always found them great to deal with. I know a few other people that would also say their warranty and customer service was good from previous experience
  • 3 0
 Offer me a mullet Scout and we can talk.
  • 2 0
 Run a 275 frame with a 29 fork and wheel but -10mm travel than recommended. Changing the front wheel is the best way as it produces much less change on the bb height compared to swapping a 29 rear for 27.5
  • 1 0
 I contemplated it. But i wanted to build a bike and a frame is impossible to get hold of. Had email notification from CRC this afternoon that they were back in stock and they were gone within an hour.

Commencal's HT frame apparently is designed to take both wheel sizes. This would be a good shout for mixing wheels, no? Might look into it since it looks like i'll have to give up on the Scout.
  • 1 0
 Can anyone who has one of these comment on the bearing life of the bottom shock mount. That seems like a lot of movement with every stroke.
  • 1 0
 @Nukeproofinternational on the new bikes do you know if the cable entry point on the frame clears the fork stanchion crushing the cables on full lock? Cheers
  • 3 0
 Gorgeous
  • 2 0
 No Geometry numbers! what kinda bike release is this !?!?
  • 3 0
 All a ploy to get you to visit our website... sneaky gets
  • 1 0
 @Nukeproofinternational:
The 297 bikes just have 290 spec sheets and geo
  • 1 0
 @five-10: few Very subtle changes.. geo doesn’t change much though
  • 1 0
 @Nukeproofinternational: Ah ok cool. Why does the 297 run a 70mm stroke shock for 190mm travel when the 275 runs a 75mm for the full 200mm?
  • 1 0
 Priecy. But they reduced the ridiculous price for the comp buils 4099€ vs 3899€. Still expensive.
  • 1 0
 Bit of a plumper but probably the same weight as most peoples trail bikes.
  • 1 0
 Can’t believe 27.5 is now a thing of the past, unless you ride a small
  • 2 0
 Still do 275 frames in all sizes, just can’t hold stock of all wheel sizes / combos
  • 1 0
 @Nukeproofinternational: ok was wondering though if the geometry is still correct for 275 fork and wheel or if it has changed since the 2020 to suit the 29?
  • 1 0
 @Nukeproofinternational: thats why nuke proof is so good. keeps amazing bikes for the people who don't follow trends
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