10 years’ experience has told us that whilst every client has the same goal – to be the fastest they can be – each one of them is different and how they achieve that goal will vary.

We want to help you find that aerodynamic / biomechanical sweet spot and be the fastest that you can.

With our range of AERO FIT services, anyone wanting to go faster on their bike will find something to suit them.


A range of industry leading, aerodynamically tested and developed products, available to buy from our online store.

Including ENVE wheels and parts, PLASMA storage box, overshoes, chainrings, armrests/poles and shims.


We’ve been behind quite a few famous, trend setting products in the cycling world, such as SMART ENVE SYSTEM WHEELS, the SCOTT FOIL, the SCOTT PLASMA and the GIANT TRINITY ADVANCED, as well as extensive skin suit development with ENDURA.

Furthermore, we act as technical consultants to pro tour teams, advising them on all things aerodynamic, including their clothing.


Since Drag2Zero was established in 2007, we have been using tools such as wind tunnels and CFD to aerodynamically optimise the system that is a cyclist and his/her equipment.

Industry leading aerodynamicist Simon Smart is at the forefront of the D2Z success and is continuously pushing the boundaries for what is possible in cycle sport through his product development work with Endura, Enve and Scott.



We want to help you find that aerodynamic/biomechanical sweet spot and be the fastest that you can. From those just starting out in time trialling or triathlon to those competing at national championships or as an age group podium contender, we can help you fulfil your potential with one of the packages below.

Starting at £350

Retul D2Z

Aimed at people who are still learning how to ride a good sustainable aero position or for those who do not want the expense of a wind tunnel test.

Our Studio AERO FIT uses our in-house Aerotools, experience in aerodynamically optimising positions and Retul® to help you find your optimium and most efficient position.

Price on application

Retul D2Z

The wind tunnel option is for those who may be producing enough power but are not going fast enough, or for those who want the data that tells them categorically what impact different aspects of your position will have on your aerodynamics.

More information


(Nov 17) Simon.  What can I say....huge thanks for everything you and the team did for me today. I'm over the moon and can't thank you enough. Honestly you were great!  You've done your bit that's for sure, so now it's down to me to take this to the road. I like a challenge and pride myself on perfection so here's hoping for a faster season next year!  I will keep you posted with how it goes and will check the website on a regular basis for any go faster goodies.  I'll be back next year mate.  Once again, huge thanks I'm very grateful....D2Z are a class act! Lewis 👌👊
"Just thought I'd let you know how the season went. For one reason or another I didn't get to ride too many 25s but still managed to shave almost five minutes off my PB.  I'm sure a large slice of that was down to my session at the tunnel!"
"Hi Guys, another PB today after the latest fit, I know if would not have been possible without your help."
Ken T  
“Thought you may be interested in my first race in the new position after last weeks session.  I rode the e2/10 course last night and three weeks ago. It was cooler and more windy last night but I went 16 seconds quicker off the same power. I seemed about 30s to the good compared to other riders this time to 3 weeks ago.  So all looks positive! Thanks again for a great session.”
“I am writing to thank you for the quality of service by Drag 2 Zero earlier today. I sincerely appreciate your help and assistance today with my Aero Bikefit! The level of expertise demonstrated was representative of your professionalism and passion for the sport. You have a great set up and the enthusiasm emanating from within is why you are so busy. Long may it continue”.
“Just a quick email to thank Simon and his colleagues for their help, advice and patience at the wind tunnel yesterday. For me it was a great experience, I learned a lot and am absolutely delighted with what we achieved.  As you may know I was somewhat apprehensive, given my level and experience, at coming along but I had no need to be concerned.  I was treated like a pro!"


We were the first to offer wind tunnel testing to amateur cyclists over 10 years ago.  We are now pleased to be offering our services from the sports specific wind tunnel at the Silverstone Sports Engineering Hub.  With our heritage in F1, we feel we have come home!  Using our own test protocols developed over 10 years of rider testing, we can offer cyclists the security that they are in safe hands when they are testing their position.  A tool is only as good as those using it, and we know this is where we have a wealth of experience, having commissioned our first wind tunnel in 2002.  Not only do we understand the data coming out of the tunnel, we understand how wind tunnels work.  This provides us with the insight into how to get the most out of your session for you.  We do not follow a pre set sequence of changes, rather we adopt an organic process using our experience and engineering background to make sure that results are accurate and your session is worthwhile. 

During a test we will first analyse your current position to determine a baseline and then advise of changes we believe should be made to your position using our many years of experience in optimising both amateur and professional cyclists. We will work with you during your session to identify the right compromise between aero, power output and comfort over a number of changes to position. This is an iterative process – we look at what is happening to you each step of the way to make sure that we do all we can to make you go faster. A mechanic will be on hand to attend to any equipment changes that may be needed.

Equipment can be tested, although this can be time consuming – we are experts in product design and can happily advise on equipment during your session so we find that often money is better spent working on position.

We often achieve 20 configurations in a 2 hour session, although this may be more or less depending on variable factors such as the ease with which your bike can be adapted.  That said we are more about quality than quantity and the progression we see throughout the test is more important to us than the number of runs achieved.

If you would like more information about our rates please contact us.

Bike wind tunnel


Drag2Zero provides technical and aerodynamic consultancy services to the cycle industry, pro tour teams and professional triathletes.

With extensive knowledge of all things aero relating to cycling performance, a team led by industry leading aerodynamicist Simon Smart can aid with the development of innovative performance focussed products. Using state of the art wind tunnels, CFD and rapid prototyping techniques, we have been involved in the design of ground breaking, trend setting products.

While working as an aerodynamicist for Red Bull Racing, Simon Smart identified through his own participation in cycling that aero was the future for the cycle industry. In 2007 he left the world of motorsport to establish Drag2Zero, focussing on helping cyclists go faster through advising on their riding position and the products they use.

Simon has been recognised as one of the most influential people in the bike industry, being responsible for the design of a number of record breaking products as well as helping some of the highest performing pro athletes go faster.

  • Using state of the art wind tunnels, CFD analysis packages and rapid prototyping techniques we analyse how air flow impacts on products and riders to derive the most optimised cycling products.
  • We have assisted in the design of two of the most aerodynamically optimised bikes in the world – the GIANT TRINITY and the SCOTT PLASMA (3, 4 and 5).
  • We have worked in partnership with ENVE Composites to develop the enormously successful SMART ENVE SYSTEM range of aero wheels and components.
  • Our extensive work with ENDURA has led to some of the fastest time trial clothing available, optimising not only fabric choice but fit too.
  • We act as technical consultants to pro tour teams, advising them on all things aerodynamic.


To discuss our products and services in more detail or book an Aero Bikefit session, please get in touch.


@Tri_Niall Great to see you Niall. Will be keeping a close eye on your achievements!

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Drag2Zero Limited, Silverstone Sports Engineering Hub, Unit 1129, Silverstone Park, Buckingham Road, Silverstone, Northants NN12 8FU
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Photo credits: Drag2Zero Limited, Cycling Weekly & Benedict Campbell.

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