Avanti Giro ER-C Handlebar Width: Measure at the Drops
Avanti Giro ER-C handlebar width is published with an easily missed qualification: it is measured at the drops. The current product specifications list a Syncros Creston 2.0 alloy bar, with 400mm for XS and 420mm for S, M, L and XL. Compare those entries using the stated measurement location, rather than treating every “400mm” bar as an identical fit.

Avanti Giro ER-C handlebar width: match the bicycle size and measurement point
Start with the exact bicycle being considered. The current 297719 and 297718 listings distinguish XS from the remaining four sizes in the handlebar entry. That is a description of the advertised equipment, not a rule that all riders choosing an XS frame require one particular bar. A used bicycle may also have received a cockpit change.
Next ask where the width was measured on any alternative. A specification measured at the drops should not be compared directly with a seller’s measurement at the hoods without establishing the relationship between those points. The current Avanti table does not publish a separate hood-width value, so do not invent one from its single width figure.
Do not let a shared product name fill in missing dimensions
The OEM entry says Creston 2.0 alloy and gives a 31.8mm interface. It does not, in that entry, provide every dimension or identify every version sold under a related Creston name. Keep the complete part identity in the enquiry rather than adding geometry, weight or accessory claims from a similarly named aftermarket product.
For example, a page describing a Creston Aero variant is not automatically the specification for the fitted OEM bar. An aero model’s shape or associated stem system should not be transferred to this bicycle merely because both names contain “Creston 2.0.” Have the actual bar identified if a replacement, mount or cockpit change depends on that distinction.
Separate equipment comparison from a fit decision
When comparing two listings
Record the frame size, fitted bar identity, stated width and measurement location. Ask the dealer to clarify anything omitted. This creates a consistent comparison without reducing the complete bicycle fit to a single catalogue number.
When deciding whether to change your bar
Explain the problem in practical terms, such as difficulty reaching the controls or discomfort in a particular position. Those observations do not, on their own, diagnose bar width. Ask a suitably equipped dealer or fitter to assess the actual riding position and controls before selecting different equipment. A shoulder measurement alone is not a replacement prescription supplied by the cited Avanti table.
The older Cadent in the photograph is contextual brand imagery. Its handlebar shape and visible controls are not a measuring guide for a modern Giro. This article interprets published current equipment, and does not claim to have measured a delivered bicycle or tested a different-width replacement.
FAQ
What width is listed for XS?
The current listing gives 400mm, measured at the drops.
What width is listed for S through XL?
The current entries give 420mm, also measured at the drops.
Does that supply a separate hood-width measurement?
No. The cited entry does not publish a separate width at the hoods.
The Avanti topic links related owner references. Its brand introduction explains the wider range; cockpit decisions need the actual frame, controls and fitted bar identified together.
Primary references: Avanti manufacturer reference 1 (https://avantibikes.com/product/giro-er-c-297719/); Avanti manufacturer reference 2 (https://avantibikes.com/product/giro-er-c-di2-297718/).
Photograph credits and permissions
Photograph 1
Original title: New ride
Creator: Yun Huang Yong; creator URI: https://www.flickr.com/photos/goosmurf
Original source URI: https://www.flickr.com/photos/goosmurf/4845857240
License / permission: CC BY 2.0
License / permission URI: https://creativecommons.org/licenses/by/2.0/
Modification notice: Original JPEG bytes and metadata unchanged.