LIOS is a British bike brand specialising in high-performance carbon and titanium road, gravel, triathlon and mountain bikes. Every complete LIOS bike is built around the rider, with professional Retül bike fitting forming an integral part of the process.

Considering a new bike? Talk to us before your fit.

Everyone has a different body shape, different biomechanics, different levels of flexibility and different levels of physical ability, so you should ensure the bike fits you. A professional bike fit is the most important factor for optimal efficiency, performance and comfort on the bike. It will also prevent pain that is common in the knee, hip and lower back, particularly with riders who are trying to adapt their bodies to the bike they have already purchased.

At LIOS, we don't just adjust bikes to riders, we design and build them around riders too. As a British bicycle brand specialising in carbon and titanium bikes, bike fitting is fundamental to the way we approach every bike, whether it is one of ours or one you already own.

The most effective way to identify the right position for you is through a dynamic bike fit. At our professional bike fitting studio in Lee-on-the-Solent, Hampshire, we use Retül 3D Motion Analysis Technology to provide highly accurate and comprehensive bike fit data. We regularly welcome riders from Gosport, Fareham, Portsmouth, Southampton and across the wider country.

Retül Fit is more than just a bike fit. It’s a way to learn about your body, the root cause of your aches and pains and how a proper fit will help you achieve your cycling goals.

At our bike fit studio in Hampshire, LIOS is one of less than 25 certified Retül bike fitting professionals in the UK.

Using 3D motion capture technology, the Retül system accurately measures every degree of movement and millimeter of distance, providing you and the fitter with data to support the choices made during the fit for your cycling equipment and personal riding experience.

Retül technology incorporates three main data points in bike fit theory:

- Bike fits must be dynamic. Using motion-capture technology, the system records your positions in action, therefore creating the most realistic picture of your actual pedal strokes and body position when out on the road and trails.

- Measurements must be accurate. Measurements made by traditional tools are subject to human error and therefore can be inaccurate. The Retül system creates true objective data.

- Biomechanics are best assessed in three-dimensional space. Fit data collected in a traditional two-dimensional plane (i.e. video-based systems) is fairly limited because the fitter can only look at one view at a time and those views stand as independent reference points. In order to make the best recommendations, the fitter must appreciate that the front and side views are actually interdependent reference points, so they must be viewed simultaneously in three dimensions in order to distinguish how all the applicable movements of the body are working together. Retül uses 3D motion sensors to simultaneously gather data on multiple angles.

Anyone who plans to ride for any period of time should consider having their position assessed to ensure optimal efficiency, comfort and injury prevention. This applies to cyclists/triathletes who already have a bike, but more so to those looking at purchasing a new bike.

Everyone is an individual and the bike should fit you; not the other way round. We take time to ensure you’re happy, so you will perform better and enjoy riding more as a consequence.

• Initial Assessment – Rider history, injury background and goals.

• Off-Bike Measurements – Flexibility, symmetry and key joint ranges.

• On-Bike Adjustment – Real-time analysis using motion capture (Retül).

• Fine Tuning – Cleats, bar height, saddle angle and position.

• Follow-Up Support – Advice on equipment, future adjustments and next steps.

“I have just completed my first 100 mile ride since my bike fit with Steve and finished the sportive feeling fast, fresh and comfortable. Steve looked at both my body as well as my bike, as I learnt that this obviously has a massive bearing on the fit. I was given very helpful advice and stretch plans from him to carry out and with his wisdom and 'state-of-the-art' technology, he adjusted my bike perfectly. This is a first class service and worth every penny if you want to spend many miles pedalling.”

Ben L

“I drove a 500 mile round trip to get my bike fit with Steve @ LIOS. I figured having purchased my dream bike, I should get it fitted by the best in the game. As a cyclist with some biomechanical problems, Steve helped me get the perfect equilibrium with my bike; essential as this year for the first time I'm doing some serious rides. I could feel the comfort benefit instantly with the minor adjustments he made on the day, and I know this will be magnified when extracting the last energy out of my legs on Mt Ventoux in the summer. Highly recommended.”

Chris W

“After having a bike fit with Steve I realised just how badly my bike was set up for me! After a few adjustments it became evident I was too stretched out on the bike. Steve recommended a shorter stem with greater angle and an inline seat post, which has made a huge difference to my riding. I'm now a lot more comfortable on the bike and managed three long days and 335 miles at the Tour of Wessex with no real aches and pains! It's also helped my climbing...and more importantly gain some QoMs :-) highly recommend it!”

Lisa M

“An amazing couple of hours with Steve. Very impressive setup, incredibly professional and detailed. Full Retül 3D assessment, fitting both of my road bikes to me. It has made a huge difference; I came home and rode an FTP programme. I have increased my FTP by 37 Watts - just by the change in position. Highly recommended, already noticed the difference.”

Matt W