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Ridley Helium SLX Road Bike Frameset - 2017

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Item # RID005J

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  • Black/Red/White, M ($1,399.95)
  • Black/Red/White, L ($1,399.95)
  • Black/Red/White, XL ($1,399.95)
  • Grey Retro, M ($1,399.95)
  • Grey Retro, L ($1,399.95)
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For 2017, the Belgian cobble tested and gram-counter approved Helium SL gets some slight tweaks and a new name to usher in the year. The new Helium SLX Road Bike Frameset takes its predecessor's nearly unicorn-like mix of minimal weight, stiff power transfer, and knife-like handling to the proverbial extreme with a few grams of weight savings and claims of even stiffer, snappier control.

The SLX brings back the super light blend of 60, 40, and 30-ton high modulus carbon fiber to create a World Tour worthy frame that efficiently transfers power and a 30 gram weight savings over the SL (for a size medium frame). The front end sees a slightly different curvature at the tube junctions, a small change that Ridley claims boost stiffness by 15% and translates into even snappier, more responsive handling when diving into switchbacks and sprinting towards the finish line.

As with the SL, the SLX features rounded tubing emanating from the seat tube juncture, which slowly becomes box-shaped as it approaches the head tube and bottom bracket junctures. As Ridley puts it, this system creates a clean transition from stiffness to comfort. Supporting this ideology, the rear triangle has been designed with a blend of the two shapes. The asymmetric, flat chainstays provide a stiff platform for power transfer to the rear wheel, while the ultra-thin seatstays create a vertically compliant ride quality without sacrificing rigidity.

  • A featherweight road frameset
  • Race-ready geometry handles technical roads with ease
  • High modulus carbon layup drops grams from the SL
  • Updated headtube junction shape increases stiffness
  • Internal cable routing with molded internal channels for clean install
  • Beefy bottom bracket shell efficiently transfers power
  • Clearance for tires up to 25mm and external rim widths up to 28mm

Tech Specs

Frame Material:
60t-40t-30t high modulus carbon fiber, [dropout protection plates] stainless steel
Wheel Size:
4ZA Helium SLX
Fork Material:
60t-40t-30t high modulus carbon fiber
Head Tube Diameter:
1-1/4 - 1/1/8in tapered
Headset Included:
Bottom Bracket Type:
Cable Routing:
Front Derailleur Mount:
Brake Type:
standard rim
Compatible Components:
electronic and mechanical drivetrains
Seatpost Diameter:
Front Axle:
Rear Axle:
Recommended Use:
Manufacturer Warranty:
5 years



Claimed Weight

Claimed weights are provided by the vendor.

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[frame, medium] 750g, [fork] 300g

Geometry Chart


Helium SLX

Seat Tube

Seat Tube

Effective Top Tube



Stand Over

Head Tube

Head Tube Angle

Seat Tube Angle

Bottom Bracket Height

Bottom Bracket Drop


XS   48cm 52.5cm 52.7cm 37.4cm 75.5cm 13cm 72o 74o   6.8cm 40.5cm 97cm
S   51cm 54.5cm 54.2cm 38.4cm 77.5cm 14.5cm 73o 73.5o   6.6cm 40.5cm 97.7cm
M   54cm 56.5cm 57.3cm 39cm 80.4cm 17.5cm 73.5o 73o   6.6cm 40.5cm 98.7cm
L   57cm 58.5cm 59.9cm 39.6cm 83.4cm 20.5cm 73.5o 72.5o   6.3cm 40.8cm 100.5cm
XL   60cm 60cm 62.4cm 40.3cm 96.1cm 23cm 74o 72.5o   6.3cm 40.8cm 101.4cm

Reviews & Community


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Avg. ride time: 5h 13m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Awesome - Get the bike!

  • Familiarity: I've put it through the wringer

Recently bought this frame and I have had a chance to get in several rides in and I wanted to give a review for this frame.

In short, this frame is just Awesome. It is stiff in the bottom bracket and the head tube which gives the bike awesome handling. I would characterize the bike as a race bike with some endurance nuances. What I mean by this is the frame has a taller headtube to give a bit of comfort if needed, but this is a straight up race bike. Power goes directly from the pedals and no effort is lost. Greipel sprints on this frame so it is stiff enough for us lesser folks :)

I chose to build this bike up with Mavic Cosmic Carbon pro wheels.. They are tubeless and coupled with this frame, the ride is pretty sublime. Before this bike I was running a 2014 Trek Domane with Mercury M5 wheels. I was running 105 / 110 on that bike.. This bike I run at 70 / 75 PSI.. You can imagine how this affects the ride quality... In a very good way!

Honestly, this bike is worth every penny of it's MRSP.. Even more so with the sale that CC is running. This is a pro tour frame people and the price point.. It simply cannot be beat.

Lastly, I want to give a shout out to my guy Kyle Brown. Top notch professional who was nothing but patient and helpful during my bike buying adventure. Basically I bought a full bike and the frame wound up not working.. Had the bike stripped at my LBS and sent the frame back. This frame was sent back via next day air so I could get it built up as quickly as possible. Cannot say enough about the great post sale support from Competitive Cyclist.

I am attaching a bike pic. Not the greatest pic in the world, but wanted give folks an idea of what the Grey looks like built up.

Awesome - Get the bike!
Avg. ride time: 6h 3m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Light, Stiff.....FAST

  • Familiarity: I've put it through the wringer

What an awesome frameset Ridley has produced. Finish on the Gray frameset looks stunning in person and gets lots of compliments. I have ridden, and owned just about every super bike you can imagine, and the only thing missing here is the hype. The Ridley will climb, descend, and sprint as well as all the other big name brands out there, and look better doing it. Super straight forward to build without any weird proprietary issues like headset, seat post, bottom bracket, etc. I now have the Helium SLX, and the Noah in the stable from Ridley, and will definitely buy Ridley again.