MET Manta MIPS Helmet Review: Aero Performance Without the Aero Price

Overview

The MET Manta MIPS is a road-legal aero helmet aimed at riders who want measurable watt savings without stepping up to a full time-trial shell. For triathletes racing draft-illegal on a road or tri bike rather than a dedicated TT rig, that’s a genuinely useful middle ground — most of the aero benefit of a specialist helmet, with the ventilation and weight of something you’d happily wear for a five-hour Ironman bike leg.

MET Manta MIPS Helmet
MET Manta MIPS Aero Road Helmet

Key Features

  • Weight — Around 235-250g in a size medium, competitive with — and in some tests lighter than — vented climbing helmets, let alone rival aero lids.
  • Aero performance — MET’s own wind-tunnel testing claims a three- to four-watt efficiency gain over its predecessor and rivals at race-relevant speeds; independent wind-tunnel testing found it noticeably faster than a standard vented helmet over a 25-mile bike leg.
  • MIPS safety system — Integrated rotational-impact protection without the bulk some aero helmets add to accommodate it.
  • Ventilation — Fewer, more targeted vents than a pure climbing helmet, but reviewers rate cooling as strong for an aero-focused design.

Verdict

Reviewers are consistently positive: strong aero credentials, low weight, and a price that undercuts most rivals in the category — a rare combination. It won’t match a dedicated TT helmet’s numbers in a full aero position with clip-on bars, but for a road or tri bike setup where you’re sitting more upright than a pure TT rider, the Manta captures most of the available gain while staying comfortable enough to forget you’re wearing an “aero” helmet at all.

Buying Tips

  • Size up if you’re between sizes — the internal padding is fairly thin, so a snug shell fit matters more than usual.
  • If you also own a dedicated TT helmet for a full aero position, the Manta is best thought of as your road/tri-bike race helmet, not a TT replacement.
  • Check current stock and colourways before racing — popular sizes sell out at this price point.

Care and Maintenance

Wash the removable pads regularly to manage sweat and odour, and store the helmet out of direct sunlight — UV exposure degrades the EPS foam’s protective performance over time, even without a visible crash.

Check price on Tredz — £159.99 at time of writing (RRP £229.99).

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