SIGNATURE SERVICE (2026)

#SPEEDFIX Remote CdA Optimisation:
use CFD to take your aero to another level

You’ve already improved position with a bike fit, some Aero-DIY or a BioRacer AERO session.
Now we have the CFD capabilities to reduce your drag using proprietary remote aerodynamics modelling.

Optimising position then helmet, to give maximum aero gains, no travel and competitively priced.


1. Choose your package ↓ See CFD vs Wind Tunnel Report Read FAQs

What this adds on top of BioRacer Aero Day or your previous bike fit, track or tunnel session

  • Remote & repeatable
    • We run CFD (computational fluid dynamics) using "cloud" super computers to analyse your photos, fit dimensions and position data.

  • Moves beyond “looks fast”
    • You get measurable CdA "evidence" to choose position & helmet.

  • Stacks on your previous service
    • Perfect add-on to BioRacer, track, tunnel or DIY sessions.

  • Unique helmet roster
    • Access to 23 helmet options with Abus, Scott & Trek options coming.

Typical savings: ~~15-24W at industry standard speeds (30mph/50kmh)
Varies depending on baseline, speed and total upgrade budget.

How the “runs” work

Each simulation is one controlled CFD test run. Most meaningful position changes need around 6–10 runs to converge (we test → narrow → confirm).

  • 1. Position optimise
    • 6–10 runs to optimise a change you can actually hold.

  • 2. Helmet testing
    • Priority shortlist or full roster (23 options as of Mar 2026).

  • 3. Buffer runs
    • Tie-breakers + sanity checks (because real life isn’t perfect).

Remote means you can do this from home - no travel and easy to run more sims 6 weeks or 6 months later, upgrade or look at new helmets in the menu when they arrive.

This service is ideal if you’ve already had a standard bike fit with only visual aero advice that it "looks fast" or the helmet is "looking quick".

Build your package

Pick what you want, see exactly how many runs you’re getting, no price surprises.
Click “Make Your booking” and it will generate an email for you to complete.

Aero Starter 10 runs £225
1 position block + helmet shortlist. Fast, practical, strong ROI.
1 position blockHelmet shortlist
Fast Turnaround 10 runs £275
In-season quick results service: focus on position or helmets, with priority booking.
Priority booking De-brief call Comfort follow-up
Race-Ready Improvements 20 runs £375
Position + helmet shootout with tie-breakers. Big gains without travel.
2 position blocks (typical)Helmet shootoutMost popular
Premium Aero 30 runs £495
More position iterations + deeper helmet testing + tie-breakers.
3 position blocks (typical)Deeper helmet testingMaximum gains
FIT-CFD 16 runs £350
In-person at Southfork Cycles: position check, posture/bike photos, 2-hour CFD session and follow-up runs.
Southfork Cycles3+ hours6 in-session + 10 follow-up
Position upgrade (8) 8 runs £125
Follow-up optimisation on your existing CFD twin (focused position & helmet tweaks).
Existing twinCost effective
Position upgrade (14) 14 runs £199
Follow-up optimisation on your existing CFD twin (focused position & helmet tweaks).
Existing twinVery cost effective
Second Bike set-up (same rider) 15 runs £299
Optimise your position on a second bike (e.g. TT/Tri done and you want Road/Gravel optimised).
Existing twinSecond bike
Want a custom service? Click Make your booking and tell us your needs.



Your build summary

TOTAL RUNS 10
TOTAL £199
A position optimisation typically needs 6–10 runs. With this build you have enough budget for ~1 position block plus a meaningful helmet shortlist.
What you’ll provide us:

Fitting measurements, side/front photos (short video optional), race target (distance/watts/time), and any constraints (comfort, UCI, Sprint Tri Draft legal, etc).
If you’ve done CFD before we can use your "twin".
If you've done BioRacer Aero or a bike fit elsewhere we can use some of that data.

2. Make your booking

Clicking "Make your booking" produces a pre-filled email for you to complete additional details, add position pictures/video and then send it to us.

FAQs

What does it mean by a riders CdA?

In simple terms: “A” is your effective frontal area; “Cd” is how cleanly air flows around you and the bike. The product is CdA - your “how hard it is to push through air” number. This service is about choosing the setup that produces the best CdA outcome, while staying comfortable and sustainable.

Is this service remote only?

Yes—remote by default. It’s ideal after BioRacer Aero / a bike fit / track or wind tunnel session, because we start from a strong baseline and refine efficiently.
If you want in-person too, book BioRacer Aero first and add this on afterwards.

What is the up to date Menu of helmets?

We can do anything from a shortlist to the full roster. A typical “shootout” is ~10 helmets, then re-test the top few if needed.
Premium Aero gives room for deeper helmet testing and tie-breakers; if you want the full roster, just tell us and we’ll quote the runs needed.
New helmets are being added every month.

Current line up (22.7.2026):

*ABUS Gamechanger (pending)
ABUS Timeshifter Wide & Narrow Visor
Ekoi Pure Aero (M/L)
Ekoi R_Aero (M)
Giro Aerohead
Giro Aerohead II (S/M/L)
HJC Adwatt 1.5 (S/M/L)
Kask Mistral
Lazaer Volante KinetiCore (M)
MET Codatronca (L)
MET Drone Wide Body II (M)
Oaklyet VELO TT S/M/L
POC Cerebel (M)
POC Tempor
Rudy Project The wing (S/M)
Rudy Project Wingdream (S/M)
*Scott Split MIPS (pending)
Specialized TT 5
Specialized Evade 3
Sweet Protection Redeemer
*Trek Bolista (pending)
Uvex Race 8 56-58
Uvex Ultimate Race X 59-61

How big are the gains really?

Many athletes see meaningful improvements—often around ~20-35W at industry standard speeds (48/50kmh) when you combine position + helmet. Your results will depend on baseline position, budget, speed, physical constraints and what you’re willing to change.

What do I need to prepare?

Your position measurements, a few photos/video angles, race target, your current helmet details. You will be sent a link to a webpage where you fill in all your measurements and requirements.