Synthe MIPS Aero Road Cycling Helmet


Regular price £99.56 Sale price £249.99

The ultimate, high-performance helmet ready to tackle any climb, descent or crosswind with its unique, wind tunnel optimised design, 26 wind vents and intergrade MIPS system the Synthe helmet is fit for any avid cyclist looking to gain the extra mile.

Giro has used their in-mold manufacturing process utilizing a polycarbonate shell within a EPS inner proving an exception build quality as a well as a lightweight design. This in-mold design also means they can tailor special, internal channelling to pull air into the helmet helming improved breathability, fit and safety.

The Synthe one of Giro’s best-known aero helmets, completely wind tunnel optimized to reduce drag, something professional teams like BMC and Team Katusha take extremely seriously and only the best will do. The Synthe isn’t just fast, its also breathable, with 26, specially designed vents allowing air flow in and around the head for when things really start to heat up.

Giro has used their own Roc Loc Air system offering a micro-adjustment dial and a tilting ability meaning once its on, it’s on for good. Exceeding stringent safety standards, Giro has fitted the MIPS liner ensuring that not only are you protected from head-on impacts but from rotational impacts that can harm the brain.

The Synthe is a helmet that can do it all, from racing to sportives to XC mountain bike adventures, its lightweight, comfortable and aerodynamic in a package that in our opinion simply cannot be matched.

Key Product Features

  • 254 grams (CE Medium)
  • Featherweight webbing with slimline buckle
  • Roll Cage internal reinforcement
  • Ponytail compatible
  • MIPS equipped
  • In-mold polycarbonate shell with EPS liner
  • Thermoformed SL reinforcement
  • Roc Loc Air
  • Ventilation
  • 26 Wind Tunnel vents with internal channelling

Giro Synthe MIPS Helmet Size Guide

Size Head Circumference
Small 51 - 55 cm 18.11 - 22.04"
Medium 55 - 59 cm 18.89 - 22.83"
Large 59 - 63 cm 23.22 - 24.40"
If you’re unsure of your head circumference you can wrap a measuring tape around your head whilst keeping the tape just above the ears and level front to back to find your measurement or come on down into store for fitting advice.

Free Delivery

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We're able to ship orders placed before 3pm on weekdays that same day when upgraded to either our DPD Next Day or DPD Saturday Delivery, otherwise delivery is FREE on orders over £40 with our economy delivery option, we aim to ship orders placed before 10am on weekdays that same day with delivery expected within four working days.

Tracking is provided upon dispatch and you can opt for order updates to be sent to you via Facebook Messenger if you would prefer this.

Please see our Delivery Information page for further details.


  • Economy Delivery
    Delivery typically within four working days
    FREE on orders over £40 otherwise £1.95
    Fully tracked and may require a signature
  • Next Day Delivery
    Delivery next working day
    Order before 15:00 for same day shipping
    £2.95 per order
    Mainland UK only
  • Saturday Delivery
    £8.95 per order
    Available until 15:00 on Friday
    Mainland UK only
  • Freight Delivery
    FREE on orders over £500
    £29.95 on orders under £500
    Order before 12:00 for same day shipping
    Delivery typically the next working day
    Mainland UK only

Free Returns

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We want you to be 100% happy with your purchase from us here at Scotby Cycles which us why we’re one of only two or three bike shops (and as far as we're aware the only independent bike shop) which offer free returns on all accessories and clothing.

If an item doesn't fit, or isn't quite what you expected then simply email support@scotbycycles.co.uk with your order ID and ask for a returns number, once approved we’ll provide you with a free Royal Mail Tracked label so you can send us your returns completely free of charge from any Post Office branch within 30 days of purchase.

Please see our returns policy for full details.


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