Giro Synthe

Giro Authorized Dealer.
Full Manufacturer Warranty.


$ 204.95

RRP: 263.23

You save 22.14%: $ 58.28

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Giro Synthe


Giro Synthe

Giro Synthe

Giro Synthe

Giro Synthe


Giro Synthe

Product description

Product description

The Synthe is the pinnacle of road helmet design. It offers impressive cooling power, minimal weight, supreme fit and streamlined aerodynamic efficiency. It is a true synthesis of all features a modern rider wants in a high performance road racing helmet.

The difference is clear in the wind tunnel—our extensive testing reveals that the Synthe is nearly as efficient as the fastest time trial helmets. But the Synthe’s greatest attributes are comfort and ventilation. At it’s heart you’ll find our Roc Loc Air fit system.

Micro adjustments allow you to custom tune tension and fore-aft tilt with one hand and a patented design suspends the helmet over the top of the skull, allowing airflow to pass freely over your head. Cooling power is further boosted by elaborate internal channeling and a series of massive vents; the Synthe sets a new bar for ventilation.

You no longer need to choose between aerodynamics and cooling power—with Synthe you get everything, all wrapped up in a compact and sleek silhouette.


- Wind Tunnel-Aided Design for Aero Efficiency on the Road Integrated Aero Mesh Panels Eyewear Docking Ports X-Static Padding Featherweight Webbing with Slimline Buckle
- In-Mold polycarbonate shell with EPS liner
- Roc Loc Air
- 19 vents, internal channeling


- Weight: 234g


- Roc Loc Air Fit System: The Roc Loc Air system enhances comfort and stability while adding a new dimension to ventilation and cooling. With a unique design that suspends the helmet slightly above the head, it creates an optimized path for air to flow through the helmet with a Venturi effect that increases efficiency of the vents and internal ventilation channels. Like the acclaimed Roc Loc 5, it also offers micro-adjustable tensioning and vertical positioning adjustments, so you can fine-tune the fit and tilt on the fly with one hand. It’s a new level of skull-hugging luxury and cool that only Giro can provide.

- WIND TUNNEL VENTILATION: Giro helmets are developed utilizing our proprietary Wind Tunnel ventilation system, which combines active vents with internal exhaust channels that thrust cool, fresh air over and around the riders head-while forcing heat and stale air out. This significant increase in air channeling makes a difference that riders will immediately feel and appreciate.

- X-STATIC PADDING: In addition to being very comfortable, our X-Static pads provide anti-microbial properties to help keep your helmet fresher, longer. The pads are also machine washable.

Giro Synthe is available with different characteristics. Buy it at bikeinn and benefit from all the advantages. In addition, Giro Synthe has the official guarantee of the brand Giro. Also, you can complement your order with other product from our Helmets catalogue and Helmets road-mtb category.



Size chart. Helmets

Use the chart below to determine your size. If you´re on the borderline between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. If your measurements for bust and waist correspond to two different suggested sizes, order the size indicated by your bust measurement.

  • cm
  • inch
  • Kg
  • Pounds
Size Head circumference (cm)(inch)

51 - 55

19.89 - 21.45


55 - 59

21.45 - 23.01


59 - 63

23.01 - 24.57

One Size

54 - 61

21.06 - 23.79

head.jpg head_circum_eng.png
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Giro Synthe

$ 204.95

RRP: 263.23

You save 22.14%: $ 58.28

Size Size chart

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