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Bike Helmets - RA Cycles

Bike Helmets

The right helmet is the one that fits correctly, stays ventilated on long climbs, and provides certified protection — and Bike Helmets at RA Cycles covers all three disciplines across 108 options. Road, aero/TT, and mountain bike helmets from Kask, Giro, MET, Lazer, and Bell, from everyday training lids to full aero race helmets worn at the highest level of the sport.

Most helmets in this collection include MIPS rotational protection. The top tier runs deep into aero design — the Giro Aerohead MIPS II, Kask Mistral, and MET Trenta 3K Carbon represent some of the best wind-tunnel-developed options available. RA Cycles staff can help with fit system questions, MIPS compatibility, and comparing ventilation between road and aero models.
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About Bike Helmets

Road helmets prioritize the balance of ventilation, weight, and fit — the more vents, the lighter and cooler, though the tradeoff is structural compromise. Aero and TT helmets close off those vents entirely to minimize drag, which makes them faster in time trials and triathlons but noticeably warmer. Mountain bike helmets extend coverage at the temples and back of the head, and often include a visor for trail debris. MIPS adds a low-friction slip-plane liner that allows the helmet to rotate slightly on impact, addressing rotational forces that a standard shell can’t manage. Most premium road and MTB helmets at RA Cycles include MIPS as standard.

Kask leads the premium tier with the Mistral and Bambino Pro for aero riding and the Nirvana for road. Giro’s Aerohead MIPS II is one of the best-ventilated aero helmets available — a genuine step forward from traditional time trial lids. MET’s Trenta 3K Carbon is built around an ultra-light carbon shell with exceptional ventilation for its aero classification. Lazer rounds out the collection with road and MTB options at multiple price points, and Bell covers both categories with a broad fit range.

Shop by discipline: men’s road bike helmets, men’s mountain bike helmets, or browse all Kask helmets.

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R&A Cycles - 50th Anniversary

50 YEARS AND COUNTING

From a Brooklyn storefront to flagships in Walnut Creek and Miami, from handwritten mail orders to a fully digital custom bike builder — RA Cycles has spent half a century doing one thing: serving riders who demand the best. That half-century belongs as much to you as it does to us. The riders who kept coming back, who sent their friends, who trusted us with bikes that matter — you're the reason we're still here. Here's to the next fifty.

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