Ridley Fenix SL 10 review

The Ridley Fenix SL 10 can cope with the Classics and high speed sprint finishes

Cycling Weekly Verdict

With the Fenix SL, Ridley has produced an all-round race bike that copes well with a variety of terrains. I found it ideal for British roads and the price is competitive. The durable carbon lay-up makes it an attractive option for people wanting to race with a reduced risk of handlebar impacts cracking the top tube. While not featherweight, it’s light enough to take to the high mountains, conquer the cobbles and is even capable of delivering André Greipel to the line first in a bunch sprint

Reasons to buy
  • +


  • +

    All-round capabilities

  • +

    Competitive price

  • +

    Superb handling

Reasons to avoid
  • -

    Not the lightest

  • -

    Livery could be sexie

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

The Ridley Fenix SL 10 was first spotted being used by the Lotto-Soudal team during the Spring Classics of 2015 and proved very popular with the Belgian team, with several riders continuing to ride it throughout the year.

Within the Ridley stable, it sits between the climber’s favourite, the featherweight Helium SL and the aero Noah-Fast SL, with the Belgian brand describing it as an “all-round endurance platform, and reliable partner for long tough days in the saddle”.


Ridley Fenix SL 10 full bike crop

The Ridley Fenix SL 10 frame is made endurance

A Flandrian flag sticker proclaiming ‘tested on pavé’ instantly reveals the frame’s raison d’être. The top tube has a ‘leaf-spring’ appearance, a theme that continues to the rear stays which are ‘flat’ and spring-like at the seat tube, becoming more rounded at the rear dropout.

>>> The Koppenberg and the defining cobbles, bergs and climbs of the Belgian Classics

To further bolster comfort, the frame is also designed to accommodate 30mm tyres. The previous Fenix had a PF30 bottom bracket, with this version equipped with the BB86 standard, which is wider and makes extra room to add carbon and increase chainstay stiffness.

Ridley Fenix SL 10 back end Shimano Dura Ace brake

The frame can now accommodate 30mm tyres

Ridley claims the lay-up and diamond tube sections of the Fenix SL offer hugely increased side impact resistance over conventional round ones. This durability is an attractive feature and means the risk of tube failure in the event of a crash is much lower.

The added comfort and durability comes at a slight weight penalty over a superlight frame and fork, but despite this the Fenix SL comes in at very respectable 7.1kg for the complete build you see here.

>>> Should the UCI weight limit be scrapped?

Although unquestionably an endurance platform, the Fenix’s geometry is still within the realms of a race bike, with our size medium having a stack and reach of 573mm and 392mm respectively.

For those who like stats, Ridley claims that this all-new frame is 15 per cent lighter, eight per cent stiffer, and five per cent more compliant than its predecessor.

Ridley Fenix SL 10 fork and cockpit

The improved front end is more aero than the previous Ridley Fenix

The redesigned fork and head tube are also claimed to improve aerodynamics too. The frame is also fully compatible with both mechanical and electronic groupsets, with all cables running internally.


Ridley Fenix SL 10 full Shimano Dura Ace mechanical

The bike comes with Shimano Dura Ace mechanical

A WorldTour frameset as used by Lotto-Soudal is at the centre of this package and it is refreshing to see a bike where there are no shortcomings on the spec sheet.

All too often we see bikes specified with a superb frame, but at the expense of wheels that do not do the bike justice or a compromised groupset.

This is not the case here, with the Zipp 202 Firecrest hoops and complete Shimano Dura-Ace groupset complementing the frame well. Even the tyres are top quality, with our test bike fitted with a pair of Continental GP4000S IIs.

>>> Behind the scenes at Continental’s bicycle tyre factory

Ridley has been able to reduce the overall price by using its own proprietary stem, bars, seatpost and saddle.

However, ‘own brand’ does not mean lesser performance. The components are all carbon, lightweight and of high quality. I should point out that I swapped the saddle for my favoured Fizik Arione for the majority of testing.


Ridley Fenix SL 10 back end 2

The bike was put through its paces on some long rides

An endurance bike needs a suitable test. I chose the epic Rapha Manchester to London in aid of Ambitious about Autism.

This ride turned out to be 388km in a single day and involved a variety of terrain and just about every road surface imaginable.

>>> Going the extra miles: how to train for and complete an ultra-distance sportive

Comfort was superb with the Fenix doing an excellent job of ironing out road imperfections. The carbon bar and stem also absorbed road buzz which really helped me save energy and made the experience more enjoyable.

At the end of the ride I felt that the bike had performed superbly and was not left wishing I had selected something different. The Fenix SL had certainly delivered on its endurance and comfort claims.

The Fenix SL excels in another area, too. Handling is easily among the best of any bikes I have ridden, with the Fenix SL inspiring confidence through the corners and particularly when descending at speed.

A downside to super stiff, light bikes is that they can be ‘chattery’ when pushed through corners, but the Fenix is beautifully balanced, possessing a secure, planted feel. Although there are more aerodynamic frames out there, I would argue the that limiting factor in descending speed (with regards to bike design) is the handling characteristics.

I consistently set Strava PRs descending on this bike. Climbing out of the saddle feels very direct and efficient, but the bike didn’t feel quite as snappy as comparably lighter machines when attacking or accelerating hard.

The Ridley Fenix SL 10 isn't the only bike Lotto-Soudal ride



When compared to the likes of Specialized, Trek and Cervélo, Ridley is very competitive on price. Equipped with full Dura-Ace and Zipp 202 Firecrest wheels, this bike is good to go and will not require any upgrades to do the frame justice.

>>> Shimano Ultegra Di2 electronic groupset and Shimano Ultegra mechanical groupset (video)

However, it is still expensive, so you may want to consider the Ultegra-equipped Fenix SL30, which is £2,100 and uses the exact same frame and fork as this model and comes with Fulcrum Racing 5 wheels.

A complete Shimano Ultegra groupset and WorldTour standard frameset for around two grand is a very attractive proposition indeed.

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Oliver Bridgewood - no, Doctor Oliver Bridgewood - is a PhD Chemist who discovered a love of cycling. He enjoys racing time trials, hill climbs, road races and criteriums. During his time at Cycling Weekly, he worked predominantly within the tech team, also utilising his science background to produce insightful fitness articles, before moving to an entirely video-focused role heading up the Cycling Weekly YouTube channel, where his feature-length documentary 'Project 49' was his crowning glory.