Collection: Triathlon Bike Helmet

In triathlon, everything is about optimization. From position and equipment to energy and mindset. And when every second counts, your bike helmet plays a crucial role. A triathlon helmet – also known as a TT (time trial) helmet – is not just a protection for your head. It is an aerodynamic extension of your body, designed to cut through the wind and give you the best possible efficiency on the bike. At Transition Zone, we specialize in equipment for triathletes and carry TT helmets from some of the leading manufacturers such as Rudy Project, Giro, MET and Sweet Protection.

These helmets are engineered with the same precision as a Formula 1 car. Every curve, every opening and every visor is designed to minimize drag and maximize your performance. The results aren’t just measurable in watts – they’re felt directly in your body, especially when you hit those long, straight stretches where it all counts. When you invest in a TT helmet, you invest in seconds – and in triathlon, seconds are often the difference between a good time and a personal best.

Triathlon helmets are significantly different from regular road helmets. They are longer in shape, often with a tip or tail extension at the back, which helps to guide airflow smoothly over the back. Many models have integrated visors, which eliminate the need for separate sunglasses while also improving airflow around the face. It’s not just for the sake of vision – it’s an aerodynamic decision. The visor is often magnetic and can be lifted mid-race or easily removed as needed.

Ventilation is another crucial factor. Where road helmets have large openings, TT helmets balance keeping your head cool and maintaining a smooth surface. The best models – like Rudy Project's Wing or MET Codatronca – solve this with internal air channels and targeted ventilation, so you avoid overheating without paying extra resistance.

Safety is of course also top notch. All the helmets we carry meet international safety standards and many also have technologies like MIPS or similar internal systems that protect the brain from rotational impacts in the event of a crash. This means you can give it full throttle – with peace of mind.

At Transition Zone we carry triathlon helmets from brands trusted by professional riders and triathletes. Rudy Project has been a favorite in the triathlon world for many years and is seen on top athletes in both Ironman and ITU ranks. Their helmets combine Italian design with advanced aerodynamics and ease of use. Giro delivers strong models like the Aerohead, which is known by both exercisers and elite series for its comfort and ride characteristics.

MET's TT helmets are designed with aerodynamics at the heart of their design and often feature a slightly shorter tail, making them more versatile and suitable for both triathlon and time trial. Sweet Protection combines their experience from action sports and road racing with innovation, making them an exciting new player in the TT helmet market.

All the helmets we carry are wind tunnel tested, designed with athlete input and fine-tuned to deliver maximum performance in competitive conditions. This means that as a triathlete you don't have to choose between comfort and performance - you get both in one package.

At Transition Zone in Aarhus – and online – you will find a sharp selection of TT helmets that match your ambitions. Whether you are a new triathlete about to race your first Ironman 70.3, or an experienced competitive athlete chasing margins, we have the helmet for you. We know what works in practice because we race and test equipment ourselves.

We help you find the right fit and model, so you don't just look fast – you become faster. In our store you can try on the different helmets and get personal guidance, and online we are ready with advice and fast delivery. We don't compromise on quality – and neither should you.

A TT helmet is more than equipment – it’s a tool to achieve your goals. Once you’ve felt the difference, you’ll never race without one. Do as the best do – choose a triathlon helmet that matches your level and ambitions. At Transition Zone you’ll only find models we would start with ourselves.