With a year of Olympic hopes and having XCO Worlds nearby to their Austrian HQ in neighboring Czech Republic this coming weekend, KTM bikes decided to take their cross country racing capabilities up a notch for 2017. So they have reworked both their XC carbon hardtail and carbon full suspension bikes, both introduced just last year, with new trimmed down and optimized layup schedules, and a premium build kit that goes for higher performance than anything they’ve done before. The new Sonic-level complete bikes take over from the current top Prestige, and aren’t afraid to mix up some spec to get the best balance of performance and light weight. Check out the details and actual weights after the break…


The Scarp is KTM’s top XC racing full suspension bike, and this new version is a no-holds-barred 29er race machine. The frame uses KTM’s Straight-Line-Link suspension design, with a carbon rocker arm, a high single pivot, and flat flexing chainstays. The 90mm rear travel setup has oversized chainstays with a goal of building a efficient pedalling platform and max drivetrain stiffness.

The new Scarp 29″ Sonic uses a new performance UD carbon material and new layup that trims its weight down to around 1700g for the all carbon frame. KTM kept the same Scarp mold as the bike that they introduced last year, and was able to work the weight savings just through the use of newer fibers and rearranged fiber orientations based on feedback they took from their race teams. What is also nice on the Scarp front is that the new lighter frame tech will go to the other carbon Scarp frames as well next year, not just being limited to the Sonic version.


Like the lesser Scarps, the new Scarp 29″ Sonic gets Boosted wheels, tapered fork, press fit bottom bracket and fully internal cable routing. This and the Sonic hardtail both get a premium race oriented build kit that essentially shares all of the same light components.


The Myroon is KTM’s elite XC hardtail, and like the Scarp Sonic, the Myroon 29″Sonic is built to win races. Again the new Myroon 29″ Sonic uses a new performance UD carbon material and new layup to drop the weight down about 120g to just 1090g for the new Sonic carbon frame. Like the Scarp, it stays with the same  Myroon mold, and does it all in new layup. Unlike the full suspension though, the lighter carbon hardtail will be exclusive to the Sonic-level bike.


The Myroon 29″ Sonic also shares the same basic  features with the other carbon Myroons. Like the Scarp that means Boost spacing, the tapered fork, press fit bottom bracket and fully internal cable routing with flexible ports/caps.

KTM_Myroon-Sonic_lightweight-29er-hardtail-cross-country-XC-mountain-bike_Fox-32-Factory-fork KTM_Myroon-Sonic_lightweight-29er-hardtail-cross-country-XC-mountain-bike_toptube

To get the bikes to race weight, KTM specs Fox’s newest Kashima-coated 2017 Factory suspension components that conveniently match up well with KTM’s orange livery. Up front that means the Boost-spacing 100mm travel Fox 32 step-cast fork, with lockout just for the hardtail, and for the Scarp the Fox Float out back.

KTM_Scarp-Sonic_lightweight-29er-full-suspension-cross-country-XC-mountain-bike_Shimano-XTR-SRAM-XX1-mix KTM_Myroon-Sonic_lightweight-29er-hardtail-cross-country-XC-mountain-bike_XX1-crankset

Balancing weight savings and performance, KTM wasn’t afraid to mix up component suppliers to get the best of both worlds. That gives both Sonic bikes SRAM’s new XX1 Eagle 12 speed drivetrain for the pinnacle in lightweight race power to the rear wheel.

KTM_Myroon-Sonic_lightweight-29er-hardtail-cross-country-XC-mountain-bike_DT-Swiss-240s-hubs KTM_Myroon-Sonic_lightweight-29er-hardtail-cross-country-XC-mountain-bike_XTR-brakes-Eagle-drivetrain

But to stop everything they went with Shimano XTR braking with IceTech + Freeza rotors for the best braking performance available to the lightweight crowd.


In a first for KTM, they partnered with DT Swiss to spec their first stock carbon fiber wheelset on a mountain bike. The DT XRC1200 wheels get a special color-matched finish and pair well to the Di-cut DT 240s hubs, and carry light Schwalbe Thunder Burt tires.

KTM_Myroon-Sonic_lightweight-29er-hardtail-cross-country-XC-mountain-bike_Selle-Italia-SLR_Ritchey-Superlogic-seatpost KTM_Myroon-Sonic_lightweight-29er-hardtail-cross-country-XC-mountain-bike_Ritchey-Superlogic-bar-stem

Contact points are another place to save weight, and KTM goes with a carbon railed Selle Italia SLR saddle and house brand foam grips. To hold those in place they’ve tipped Ritchey Logic and their Superlogic line-up for the cockpit. Both Sonic bikes get Superlogic carbon offset seatposts, flat bars, and C260 stems.

KTM_Scarp-Sonic_lightweight-29er-full-suspension-cross-country-XC-mountain-bike_actual-weight-9210g KTM_Myroon-Sonic_lightweight-29er-hardtail-cross-country-XC-mountain-bike_actual-weight-8270g

All that attention to detail and trimming gets the complete bike weights down pretty low. We weighed medium versions of both Sonic bikes, and with the caveat that they had standard weight tubes installed in them vs. the light Schwalbe ones that will ship with the bike, they hit remarkable close to their claimed 8.1kg & 9.1kg weights. Actual weights on our scale were 8.27kg/18.23lb for the Myroon 29 Sonic, and 9.21kg/20.3lb for the Scarp 29 Sonic.



  1. New brand to the US, coming in the geometry from 10 years ago. At least it’s boost right?
    I was actually thinking about getting the Myroon until I saw the geometry chart

  2. I have a hard time to believe that is 1700g frame for a 29er….is that with shock? If KTM want to challenge the new Scott spark…it will need to be more clear!

    • yeah dude, cannondale isn’t made by cannondale, specialized isn’t made by specialized… all this carbon crap is made by an asian lady making a few dollars a day, welding and brazing takes skill, placing pre cut pieces of carbon into a mold takes…..well …. an asian making a few dollars a day. carbon = profit

      • Damn right. The initial tooling costs are a lot higher and the base material is not that cheap, depending on the quality of the carbon used but the base labour cost to produce each frame is insanely lower. The push of carbon I firmly believe has very little to do with performance and everything to do with much, much bigger profit margins overall.

        • If from Taiwan, bike manufacturing laborers or some of the best paid laborers in the country. They are not making $10 a day, their average pay is in the neighborhood of $1500 a month which is actually pretty darn good in Taiwan.

          The problem is that now, some companies are going to Cambodia and Vietnam for bike manufacturing.

  3. So you understand KTM is just licensing it’s name to some management company in the USA. These bikes are not actually made by KTM.

    • So it’s changed again? It used to ‘owned’ by a Taiwanese concern, same licensing type deal. At some point too KTM Austria took over the design of the frames but this may have changed as well. Looking at the design of the FS, it does look like someone put more than the usual amount of effort into the design.

  4. The bikes are made by ktm. They are 1 of the few manufacturers, that, once the frame is made, in their own factory in taiwan, each of the carbon bikes, (maybe all, i cant be certain) is shipped back to Austria, to be handbuilt. These are high quality, high end bikes. In case you were uncertqin that its just another”brand marketing cqmpaign”, a top of the line myroon was ridden to victory in the last london olympics.

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