Yes most definitely. Probably more than aero wheels. I train in a mojito and it's no aero demon

I've got a Mojito sitting here on my desk at work. The helmet, not the drink (regrettably). I love this helmet but I wouldn't race in it. There are potentially other things you might concentrate on before changing your helmet, if you haven't already. But if you are already sorted for position, clothes, tyres then yes an aero helmet is worth some thought.

Really 😳 Thanks for the info I shall look into it now

Haha that's a shame would have helped with work 😂 Yeah I'm pretty much ok with the rest of my set up just didn't know if a helmet was worth the change or a gimic, thank you so much for the advice

Using aero road Bontrager Ballista these days. I didnt find it stinking hot in Cozumel.

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2020 National Masters Champion - M40-44 - 400m IM
Canadian Record Holder 35-39M & 40-44M - 200 m Butterfly (LCM)

Last season switched from a KASK Mojito to a Lazer Wasp Air that I got at a great discount. I think I gained about 1 kph of average speed with the same perceived effort and average HR (don't have a powermeter yet) with that single change. Definitely recommend it - "free" speed :)

That's brilliant thank you so much for the advice

Thank you

Back in the old days, the order was aerobars, aerohelmet, then aero front wheel. The focus on position wasn't as strong then. tribonzai.com used to had a cool calculator, but it's been gone for years.