Scott Scale 900 WC long-term review

Joe’s superlight hardtail for tackling steep marathon climbs

Our rating 
4.0 out of 5 star rating 4.0
GBP £5,099
Joe sitting on Scott Scale 900 XC mountain bike

Our review

This is a first ride review score and may change as I spend more time on the bike
Pros: Competitively light, reliable race-ready machine
Cons: The one-piece bar/stem combo can be limiting

For 2019 I’ve been riding a Scott Scale RC 900 World Cup. It’s a high-end bike, ridden by arguably the greatest cross-country racer of all time, Nino Schurter, so it should be pretty damn fast. But pro-level speed isn’t the only deciding factor in what makes a great cross-country bike.

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The current Scale model was released in 2016, so it’s been out for a while, but the opportunity for me to ride one didn’t pop up until the end of 2018.

Muchos excitement ensued because my first ‘proper’ XC bike was a Scale way back in 2012, and I have a lot of good memories aboard that bike, so was hoping the latest model would live up to the old one.

Scott Scale 900 WC specification and details

Scott Scale 900 XC bike
A 9.3kg fully upgraded Scott Scale
Joe Norledge

Coming in just north of £5,000 in the UK, the Scale RC 900 World Cup doesn’t come cheap, but thankfully it has a suitably fancy spec for the price. The frameset is made from Scott’s HMX carbon, which sits one model down from the 879g HMX SL Scale frameset.

This may seem like a cop out on such an expensive bike, surely a £5K bike must have the absolute best frameset available? True, but apparently Scott’s pro riders, e.g. Nino Schurter, actually use the marginally heavier and crucially tougher HMX carbon frameset. So, if it’s good enough for Nino, perhaps I shouldn’t be complaining.

Elsewhere, there’s a Rockshox SID RL3 Air, with a custom Charger damper that has three modes of adjustment. This is thankfully connected to a cable lockout, which sits aboard Scott’s striking Fraser iC carbon bar/stem combo (more on that later), so no flaky hydraulic lockouts here.

Scott Fraser iC SL carbon one-piece bar and stem
Being one piece does limit your options
Joe Norledge

The groupset is a mix of SRAM’s XX1 and X01 Eagle groupset, which comes with a more amateur friendly 32t chainring (hurray!).

Wheels are DT Swiss X1675 Spline CL (a terrible name for a product in my opinion), and they come with Maxxis Rekon Race tyres in 2.25in. It’s worth noting here that Scott’s come setup tubeless, which is a real bonus compared to other brands, which supply their bikes with cheap inner tubes.

Finally, the rest of the finishing kit is courtesy of Scott’s in-house brand Syncros and it’s all nice stuff.

What’s the weight for this race-ready, size large bike out of the box? Just north of 9.3kg without pedals. That’s plenty light enough for a weight conscious XC/marathon racer like myself.

Scott Scale 900 WC full specification

  • Sizes (*tested): L
  • Weight: 9.3kg, size large (without pedals)
  • Frame: Scale RC Carbon HMX Frame
  • Shock: N/A
  • Fork: RockShox SID RL3 Air
  • Shifters: SRAM X01 Eagle Trigger
  • Derailleurs: SRAM XX1 Eagle
  • Cranks: SRAM XX1 Dub Eagle Boost
  • Wheelset: DT Swiss X1675 Spline CL
  • Tyres: Maxxis Rekon Race 2.25 TR/EXO
  • Brakes: SRAM Level TLM Disc
  • Bar: Syncros Fraser iC SL Carbon.
  • Stem: N/A
  • Seatpost: Syncros FL1.0 Carbon
  • Saddle: Syncros XR1.5 / Titanium Rails

Scott Scale 900 WC geometry

The Scale has what I would call progressively conservative geometry. This means it’s not mega slack (for an XC bike), but at the same time it’s not old-school steep.

The head angle is 69.5 degrees, the seat angle is 73.6 degrees, the chainstays a nice and short at 425mm, while reach is 443.3mm and the wheelbase is 1,127.9mm.

All this adds up to a bike that should handle fairly well on most XC and marathon courses, without throwing up any nasty surprises.

  • Head angle: 69.5 degrees
  • Seat angle: 73.6 degrees
  • Chainstay: 425mm
  • Seat tube: N/A
  • Top tube: 625mm
  • Head tube: 115mm
  • Bottom bracket drop: N/A
  • Wheelbase: 1,127.9mm
  • Stack: 617.7mm
  • Reach: 443.2mm

Why did I choose this bike?

Joe sits on Scott Scale 900 XC mountain bike
So far I’ve been loving the Scott Scale
Joe Norledge

I like to ride long marathon races with plenty of climbing, and… you don’t get many of those in the UK, so most of the races I do end up competing in are in mainland Europe.

Obviously, this means a lighter hardtail is still the way to go for a relative featherweight like myself. While you may lose some time on the descents compared to a full sus, I still think you make up much more time on the climbs.

I usually fly to these races, so simplicity and reliability are also important, and again a hardtail is the best choice for me. A full suspension bike may look and handle great, but the maintenance costs in terms of money and time while I’m away at events can be a problem.

Scott Scale 900 WC initial setup

RockShox Sid suspension fork
A lightweight setup for long marathon climbs
Joe Norledge

Because it’s a hardtail, setup for the Scale was super easy. I have all the measurements from my previous bike fit and always start with RockShox’ recommended pressure for my weight on the forks. In this instance around 95psi seemed to be the sweet spot.

Scott Scale 900 WC ride impressions

When riding the Scale, it’s hard not to slip into the usual superlatives that often litter any bike review I happen to write.

It’s more than stiff enough for my 64kg frame, yet there’s an added level of comfort built into the carbon that the old Scale didn’t have. Granted, you’re still riding a hardtail and you certainly feel those bumps, but it’s not like the XC hardtails of old.

I’d perhaps like the seat angle to be a touch steeper, which would hopefully allow for a more centred position when climbing, but it still climbs as you expect a 9.3kg hardtail to climb. So the only excuse I’d ever have on race day would be my puny legs.

Descending once again throws up little in the way of surprises. I’ve already raced the Scale in Lanzarote at the Club La Santa four-day UCI stage race, and while none of the descents were hugely technical, I felt more than comfortable letting the brakes go for some terrifying ‘euro-esque’ fireroad bombing.

Hopefully I’ll have done some more technical/gnarly descending on the Scale when my next long-term update comes around.

Carbon fibre light-weight handlebars
The Schmolke handlebars are crazy light
Joe Norledge

A few quirks

As you can probably tell, I’m a big fan of the Scale, and think it’s a brilliant race bike. However, as with any bike, there are a few quirks that I’m not so sure about. First up is the Fraser one-piece handlebar/stem combo.

While the one-piece setup is incredibly stiff, the bars are what I’d now class as a touch narrow at 720mm. As the old saying goes, you can always make a wider bar narrower, but you can’t make a narrower bar wider, so something around the 740–760mm mark would suit most riders better.

Then you have the adjustability issue. Obviously if you want to change the length of the stem or the width of the bar you’re going to have to buy a whole new bar/stem combo. And, while Scott does offer the Fraser bar at plenty of different stem lengths, it’s still more expensive than just going out to buy a stem on its own.

Carbon fibre mountain bike seatpost
The Schmolke seatpost impressed with its flex
Joe Norledge

Having changed the seatpost (more on the new upgrade in a bit) I now think the stock Scott model is perhaps a touch too harsh, and could do with some flex/compliance building in to match the relative comfort of the frame.

This is something that brands such as Merida have done with the seatpost on its Big Nine hardtail, and it makes a real difference to how battered your body feels after a tough ride or race.

However, as I previously mentioned, these are just quirks and far from deal breakers, so don’t let them put you off the Scale.

Scott Scale 900 WC upgrades

As you can see from some of the pictures, the Scale is far from stock and I’ve already had some tasty upgrades for the bike.

First up was the FSE (or Filament Spin Evolution) XC30 Extralite wheels. If you haven’t heard of FSE before, it’s a relatively small company owned by a nice chap called Dan Kellerby. Its unique selling point is that the rims are built using a process called filament winding, which is claimed to create a much stronger wheel than more traditional techniques.

The rims are 30mm deep and 22mm wide, so not hugely wide, but when you combine them with some Italian made Extralite hubs, you get a cross-country wheelset that weighs just 1,190g!

FSE carbon bicycle wheels
The FSE carbon wheels have been brilliant so far
Joe Norledge

It’s also worth mentioning that the rim bed is fully sealed, which means no tubeless tape and an incredibly quick setup process. I haven’t had these wheels fitted long enough to pass a full verdict yet, but so far, they have been mightily impressive and could end up being a legitimate competitor to the more established brands on the market.

Next up is Schmolke’s bar and seatpost. I’ve already done a first look video on these remarkably light products, and since then I’ve done plenty of miles on them.

The handlebar weighs just 96g and has incredibly low torque values, so it was hard not to think ‘they just won’t be stiff enough’ before I put them on. Thankfully, that wasn’t the case and just like the wheels I’ve been seriously impressed with Schmolke’s handlebar.

Granted, it’s not as stiff as something like an Enve cross-country bar, but it is half the weight, and I’ve had absolutely no issues since fitting it around the beginning of January.

Mountain bike saddle
The saddle is showing some battle scars
Joe Norledge

The seatpost has taken a little longer to dial in. Once again, Schmolke states incredibly low torque values for the saddle mount on the post, and suggests starting with the lowest value first to see if that holds, before tightening up to the highest value.

This meant that I did have some slippage during the second stage of the Lanzarote race, which wasn’t ideal. However, since tightening it up to the maximum torque value, there’s been no slippage, but I still want more time on it before passing a final verdict.

Scott Scale 900 XC bike SRAM drivetrain
It’s got to be SRAM XX1 for the drivetrain
Joe Norledge

Where the post does impress is with the amount of flex built in to it. I thought an 119g seatpost would be decidedly firm, with very little compliance, however I’ve been pleasantly surprised by the amount of give and comfort.

A riding friend mentioned that he could visibly see it moving while I was riding, and you can definitely feel the give/flex when pushing hard over bumps. This makes things a touch more comfortable compared to the stock Scott post, and something I’ve really come to appreciate over the last few months.

Finally, I’ve put my trusty Rotor 2INpower power meter on the bike. It’s a product I used on my 2018 long-termer and I’ve been thoroughly impressed with its performance over nearly a year and a half of riding.

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Rotor MTB cranks with a power meter
My old faithful Rotor 2INpower power meter
Joe Norledge

First update done

As you can tell, I’ve been enjoying my time on the Scott Scale and can thoroughly recommend it to any XC/marathon racer based on my experiences so far.