I don’t own a TT bike — but I still wanted something that lets me hold a proper aero position on longer efforts. So I went all-in on trying to convert my Aeroad into a proper aero machine.
This is where I ended up 👇
What I changed:
• added Canyon Gear Groove aero extension
• installed a triathlon seatpost (more forward position)
• switched to a triathlon saddle
• increased stack height significantly (around 50mm of spacers)
• added a 15° angled spacer to adjust cockpit tilt
Honestly, I expected the Gear Groove extensions to be the biggest upgrade.
They weren’t.
The real limiter was the front end.
With a low stack, the position looked fast — but I couldn’t hold it. I was constantly coming out of aero, especially on longer efforts.
The turning point was going much higher in the front.
That 50mm stack changed everything:
• suddenly I could stay in aero
• the bike felt stable instead of twitchy
• power output became consistent instead of spiky
Only after that did the 15° tilt actually start to matter and make the position feel natural.
At that point, the bike stopped feeling like a road bike with add-ons and started feeling like a proper TT setup I could actually use and stay in aero position as long as I need☺️
How many of you could realistically hold aero for 2+ hours on your current setup?
by Automatic-Oil-2253
5 Comments
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Killer setup! since this came out I wanted it lol I have a redshift aero setup on my Endurace and couldn’t justify getting a aeroad just for this. I contemplated doing something like this for a long time, ended getting a STEAL on a 2021 speedmax CFR!
That stack looks far beyond what is possible on a stock setup? How long are the bolts you needed to make this happen?
This looks double the height it would be.
Any worries of these parts failing?
How does it feel as a road bike if you remove the aerobar cockpit and use the bike as is with the changed seat post and saddle position?
Looking at how I build for my next ultra and need a nice middle ground.
Also do you have any adjustability for the arm rest/hand rests to go forward and back ?
Just curious, have you compared over a flat segment what the difference is in wattage for a certain speed? So let’s say holding 35 km/h for 10 km on a flat road, what’s the difference with and without the whole extension?