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Reader’s Rides: Fair Wheel Bikes’ Pivot Mach 6 “XXTR” 22.6lb enduro machine

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Fair Wheel Bikes Pivot Mach 6 XXTR lightweight enduro mountain bike custom build

What goes down must be pedaled up, as they say, so anytime you can save a little (or a LOT of) weight, it keeps your legs fresher for those static squat holds while descending at redline.

No stranger to lightweight builds, Fair Wheel Bikes has turned their attention to enduro with a mashed up build on the very capable Pivot Mach 6. Dubbed XXTR, it combines the incredibly light Race Face Next SL crankset with an XX1 cassette and XTR M9000 rear derailleur and shifters.

While those may be standard parts, things get pretty creative and boutiquey from there…

Fair Wheel Bikes Pivot Mach 6 XXTR lightweight enduro mountain bike custom build

One of the things Fair Wheel’s Jason Woznick proudly pointed out is that the bike achieves its very low total weight even with a dropper post. They used a KS LEV Integra, then threw a full carbon fiber and Aramid Tune Speed Needle saddle with Alcantara microfiber cover to prevent slipping and sliding off the saddle.

The other touch points are equally feathery with a Schmolke TLO Lo Rise carbon handlebar, KCNC foam grips and Extralite Hyper Stem. Assuming they used the widest bar (which is only 680mm), those parts come in at 110g, 15g and ~70g, respectively.

Fair Wheel Bikes Pivot Mach 6 XXTR lightweight enduro mountain bike custom build

Little things like Alligator iLink cable housing and their impressively slick 31-strand cables save a bit of weight over standard housing and shift cable. Hidden from sight, the dropper post uses mini iLink housing and a KCNC titanium (!!) cable, which is just under half the weight of standard steel cables.

Fair Wheel Bikes Pivot Mach 6 XXTR lightweight enduro mountain bike custom build

The wheels use ENVE’s M60forty 27.5 rims and French company Aivee’s hubs laced together with Pillar titanium spokes. Those spokes were chosen to drop about 70g compared to similarly high end stainless steel spokes, giving them a bit more allowance to go with the wider ENVE hookless rims. More weight savings come from the minimalist Ashima rotors, which (in our opinion) will need all the power Shimano’s M9000 Race brakes can muster to keep things under control.

The fork is a Magura TS8, and tires are Schwalbe Nobby Nic 27×2.35.

Fair Wheel Bikes Pivot Mach 6 XXTR lightweight enduro mountain bike custom build

The Race Face Next SL with CINCH direct mount chainrings have proven to be both durable and very easy on the scale.

Fair Wheel Bikes Pivot Mach 6 XXTR lightweight enduro mountain bike custom build

According to Woznik, the unholy combination of 11-speed Shimano and SRAM bits work just fine together, even with a KMC X11SL chain connecting them. All in the bike hits the scales at a claimed 22.6 pounds (10.25kg), not bad for a bike built to take on big mountain descents.

Check Fair Wheel’s blog for another photo or two and their detailed story on the build, including a complete parts list and links. Retail is pegged about about $10,000 to recreate it for yourself.

Not into enduro? Check out their lightweight fat bike, show bikes (parts one, two and three) and a $40K road bike for more inspiration.

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39 Comments
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Kboss
Kboss
9 years ago

I’ve been running the same drivetrain on my TRc and it works flawlessly. SRAM cassettes are superior, not to mention the extended range. XX1 triggers only let you grab one gear at a time and when you need to run across the entire cassette, grabbing multiple gears is a must.

MissedThePoint
MissedThePoint
9 years ago

Glad to hear the Shimano 11-spd RD works well with the SRAM 11spd cassette. I will avoid SRAM 11spd RDs until they can get remedy the issue with short but sharp impacts causing the chain to skip and not mesh properly with the narrow-wide tooth pattern.

Kris
Kris
9 years ago

Tell us more about the 11 speed combo of Shimano and SRAM. Any mods to the cable pull or is the spacing between them the same?

MissedThePoint
MissedThePoint
9 years ago

^ the NW pattern on the upper/guide pulley.

That and XTR’s shifter actuation is so heavenly and costs no more than a XX1 or XO1 shifter. I only wish Shimano would make thumb buttons more convex.

MissedThePoint
MissedThePoint
9 years ago

Kris, it’s spec’d with a XTR shifter. There’s more info here: https://fairwheelbikes.com/c/pivot-mach-6-carbon-xxtr/

Dave
Dave
9 years ago

Even though Shimano only has a 40 tooth cassette they made the XTR 11 speed rears to allow for a larger cassette. The combo works seamlessly. Have that set up on my MACH 4. I also know that several bike companies tested this combination when they could not get enough new 11 speed XTR cassettes.

Ripnshread
Ripnshread
9 years ago

I wouldn’t use that stem or handlebar for “big mountain descents”. That would be a deathwish.

Thesteve4761
Thesteve4761
9 years ago

Why Aivee and Ti spokes? Not much weight savings. And not exactly proven?

J wispinski
J wispinski
9 years ago

This bike is a paragon of super light build projects. Count the grams on every component and you end up with a super light build. For more than twice the price of a far more reliable bike only a couple pounds heavier. That being said I would love to test ride this beauty.

Bluefire
Bluefire
9 years ago

That’s a pretty incredible weight… But do you REALLY want an unpadded saddle on an enduro bike? REEEEEAAALLLLY?

Johann
Johann
9 years ago

680mm bars? We’re back in 2005…. Well, like the seat angle in fact.

gsmith
gsmith
9 years ago

Ya those bars… And tires. Both of those things will hold you back on descents. Put a hans dampf up front and 750 bars and you’re good to go.

humdinger
humdinger
9 years ago

Pretty pointless IMHO. Nice boutique project, but wouldn’t stand up to Enduro, let alone good AM riding!
e.g.
Saddle – ouch!
Tyres – XC tyres only, Puncture-city on any rocks (from *extensive* personal experience)
680mm bars- WAY too narrow unless you’re a really small person
Stem- flex. Enough said.
Forks- again, flex. Magura are stiff for 32mm’s, but leagues away from 36s or pikes.
My Mach6c is as light as I could make it with *proper* durable, Enduro-ready components, and she comes in at 28lbs.
I like the project they’ve done here, for fun, but it’s a long-legged XC bike, *not* an AM/Enduro bike.

butterbean
9 years ago

It may have been impressive, if it had suitable parts.

Anyone can hang expensive XC parts on a big frame & make it appear light.

It would last five minutes as an ‘Enduro Machine’

abc
abc
9 years ago

^ Agreed. It is fun to keep it light but the project fails to make rideable real Enduro bike just for the sake of wieght saving.

i
i
9 years ago

everything about this screams “weight weenie that doesn’t actually ride.” This blog makes it seem like that’s mostly what Fairwheel does.

680mm bars? Honestly? 32mm fork, Schwable ‘one-ride’ tires (as in that’s how long they last) Yeah, we must have a different definition of “big mountain descents”

Mikey
Mikey
9 years ago

Like others already said, really great news to hear that the Sram cassette will work on the new XTR! The XTR cassette weight is from my point of view the only thing where Shimano really is losing against Sram.
My personal experience is that overall Shimano makes a bit more durable parts on the XTR-XX1 price level and therefore prefer that, but I’m slightly annoyed that they don’t produce as light cassettes as Sram.

Birdman
Birdman
9 years ago

Someone (Bikerumor!) should do an official review/study of the cross compatibility between all 11 speed components (road, mountain, campy), especially cassettes. There are a lot of people confirming it in the wild but not yet from any of the major blogs and websites…

Tom
Tom
9 years ago

Exactly, typically pointless fair wheels build. Tbh I wouldn’t be happy running the nextsl on an enduro build, especially since I’ve broken xx1’s.

The ashima rotors are similarly dreadful, and I’m not even going to the cockpit/tyre combo.

Less of an issue with the silly wheels, at least it’s not going to massively compromise the ride.

I do however lust after the i-links, which are awesome. How come no power-cordz with those?

Grumble grumble grumble

Jeff
9 years ago

On the road side, all 11 spd, Campy, Sram and Shimano are all cross compatible. I would imagine the off road 11 spd is also.

justaguy
justaguy
9 years ago

I don’t know why I bother to read the comments, they’re always the same, people talking trash about things they’ve never used or even seen. This bike is rad. If you read the article in the link it does say the bar is custom made so it sounds like someone got the size they like and perhaps it’s made to suit the bike as well. Bluefire, the “unpadded” saddle is actually a padded saddle and has been used by mtb riders in Europe for more than a decade. Sure the tires wear out quicker than some, but obviously this wasn’t built for a budget minded rider so changing tires more often probably isn’t an issue. Personally I’d love to ride this thing.

Veganpotter
Veganpotter
9 years ago

Jeff…the SRAM 11speed cassette is supposed to have close to 10spd spacing. That’s why this is such a surprise to be working well. I’m guessing you need to offset the limits so the upper pulley may be favoring one side of the smallest cog to make sure it still makes to to the biggest? Maybe I’m wrong though.

***I’d like to think some computer wiz could change the cable pull on a Di2 derailleur to run any cog spacing and any number of cogs. I know for sure that I can’t do it but I can imagine its possible to tweak with the right brain going at it.

DK
DK
9 years ago

The Sram cassette and XTR combo is nothing new a lot of people riding that since M9000 came out. There is a whole tread on MTBR of people using this combination. I would ride it too if winter would please go away 🙁

Kark
Kark
9 years ago

That bike is under-forked by leagues.

I’ve been running a TS8 for a couple seasons on my trail bike and it’s remarkably stiff for a 32mm. But the damping in limited, it can’t handle brake bumps at all and generally starts to get outgunned when the speeds get closer to the DH end of things. It’s a competent trail fork but I wouldn’t choose it for enduro racing unless the tracks are pretty buff.

Otherwise, its typical of what FWB put out. pretty things for pretty pictures with little consideration for utility or longevity.

aplaceforeveryone
aplaceforeveryone
9 years ago

Maybe not all of you remember. These are the guys that were doing this on their road bikes back before road bike party: https://www.youtube.com/watch?v=NJmdb1Oe2h8 Probably safe to say the bike will be well ridden, but of course if you’re that smooth you can probably ride just about anything.

Mike Bechanic
Mike Bechanic
9 years ago
Mr. P
9 years ago

That bike looks sweet! And the weight is nuts. Riding it like an Enduro bike would go like this:
– Show buddies how light the bike is in the parking lot; they are impressed!
– Ride up the hill; nice!
– Enduro down… change flats, check for cracks in the rim from rim strikes
– Go immediately to bike shop to put a pound worth of real tires on.
– Next ride… at the shop again, putting on some real bars for *any* control
– Next ride… It would be nice if the fork could handle the chunk at speed…
– 1 month later = the 26 pound Mach 6!
– Buddies are impressed by having to wait on the trail for you and your frail bike over the last month.

P

liljoe
liljoe
9 years ago

Breaks XX1’s and then doesn’t trust the Next SL’s??? Everyone and their dog has broke a SRAM carbon crank. XO DH have maimed more people than I can shake a stick at. RF has their carbon crank game dialed.

goridebikes
goridebikes
9 years ago

So… at 24 pounds we could have rotors that actually stop, and a fork that’s decent, and a cockpit that isn’t sketchy light for true enduro riding.

This is really cool, but I would definitely add a pound before riding this hard.

Dominic
Dominic
9 years ago

Am i the only person left in the world that doesn’t like wide bars? I was riding BMX when the wide bar thing came along there just before it swung up to DH and then trickled down the MTB scales, and I didn’t much care for it then. The widest bar i’ve ever liked was 710mm, and i seem to remember cutting it down at some point, so it probably ended up about 680 or so. It certainly wasn’t as scary light as a Schmolke though at 510g

abc
abc
9 years ago

@ Dominic. I actually run a 680mm bar, I think it is great for XC and a lill’ of AM. But now that I carry more and more speed on the trail, I need to get to something wider in order not to crap my pants in techy downhill.

I believe that if one has the skills and prefer shorters bars, one shouldn’t move to anything wider for the sake of the hype though.

Woodsman
Woodsman
9 years ago

@Dominic

No you’re not the last person riding narrow bars…there are 2 of us. I don’t get why you need 800mm bars to steer a 25lb. bicycle when I used to ride a 220lb. m/c thru the woods with 24″ (600mm) bars alot faster.

I ride in tight woods & if I use anything over 650mm I smash the crap out of my knuckles.

Btw, most turning on 2 wheeled vehicles is accomplished by leaning anyway.

MM
MM
9 years ago

Too ‘try hard’. That bike would explode under heavy use within 5 minutes.

Seraph
Seraph
9 years ago

@Kboss – you are mistaken sir. SRAM XX1/X01/X1 triggers allow you to shift up to three gears at a time when moving up the cassette.

Seraph
Seraph
9 years ago

Cut that steer tube, put a Monarch RCT3 rear shock on there, a Formula 35 fork, and Formula R1 Racing brakes to really lighten it up. If your comment is “those parts are too light”, then I invite you to look at the cables/spokes/hubs that were chosen for this particular build.

dodo
dodo
9 years ago

Well … they are not counting the pedals (350-400 grams) and using some very questionable ultra expensive components, the saddle, heavy ultra-wide rims combined with titanium spokes, and a number of frankly silly items such as the alligator links.

Real weight of the rig (i.e. with pedals and a decent saddle) is probably close to 24 pounds with pedals.

You can easily build it as light for less money, and lighter if you go for 26 wheels instead of 27.

e
e
9 years ago

Looks like a great build by a road shop. If you take those weight weenie rotors down a few trails here in socal you’ll make them match the blue themed bike. Tortured is the word that comes to mind when I see that Mach 6 frame, like a dog wearing a stupid sweater.

starship303
starship303
9 years ago

IMO for a medium-light rider (where a lighter bike can make a big difference!) I see little issue with this weenie build (cost aside of course!). That saddle though, hmm…

On the Schmolke bars, they may have built it with 680mm but the TLO model bars are available in widths up to 800mm according to their site… Maybe they are custom order bars. I’d personally go the Schmolke Lowrise DH model cut to mid-700’s at the expense of 30-40g (still only 150g according to their site!).

Ti cables? Damn!

dodo
dodo
9 years ago

And actually, looking at the list of components something is wrong. The Pivot is a 6 pounds frame and and that means that they have a overall component weight of less 16 pounds (minus pedals). I do not see that happening with the choices they made.

But maybe I am wrong: proper weight weeny etiquette however is to show a photo of the bike weighted …

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