🎯 Speed Priority Check
Where to invest first to save time over 40 km? Position, tires, helmet, cockpit, wheels: the real speed gains hierarchy for age-groupers.
v1.3 — Course-weighted speed gains
🇫🇷 FR
🇬🇧 EN
Your speed profile
Position & fit
A specific TT/triathlon bike fit (not just saddle adjustment) with postural analysis.
If you regularly sit up on the bike, you lose most of your aero benefit.
Equipment
Rolling & Crr
Crr (rolling resistance) is a massively underestimated lever. Good tires = instant gain.
Cockpit & fine aero
Narrowing elbows and shrugging shoulders reduces frontal area. Free gain if done properly.
Marginal gains
Yes, it's real: hair creates turbulence. Specialized study: ~40 sec over 40 km.
Calf guards smooth the lower leg surface and reduce drag. Measured gain in wind tunnel.
Budget
We'll prioritize gains based on what you can invest.
Course profile
Course profile influences the gains hierarchy: on slow climbs, weight matters more than aerodynamics.