KHS Bike Size Chart: Seat Tube, Stack and Reach Have Different Jobs

A KHS bike size chart needs a model and a named measurement before its numbers can help. The Taiwan Flite 720 page links a geometry sheet labelled TK-725 (FLITE 720). It separates seat-tube length, effective top tube, standover, stack and reach. These are different dimensions, not alternative ways of writing one universal KHS size.

Read the actual KHS bike size chart labels

The linked Taiwan sheet identifies seat-tube length as column A, stack as I and reach as J. For three examples, the published millimeter values are shown below. They are data from that named chart, not measurements of the historical bicycle in the photograph or instructions for choosing a size by height.

Reading across a row keeps the dimensions attached to one frame. Reading only “XS” loses that detail. For the same three rows, the sheet gives standover values of 733, 786 and 824.9 mm. Those numbers describe the charted frames; they are not a recommendation for anyone with a particular inseam.

Keep the market’s label with its geometry

Taiwan’s product text lists XS 43 through L 52.5 cm, while the linked geometry includes an additional XL row. The 2025 US Flite 720 page instead uses labels running from XS/49 to XL/61. A matching letter does not establish equivalent dimensions across these records.

Identify which chart applies to the actual bicycle and confirm its measurement definitions before merging any numbers. An extra geometry row also does not prove that size is offered by a particular seller. The historical photograph supplies road-bicycle context only; its frame has not been assigned to either source’s sizing system.

Take a complete question to a fitting discussion

Bring the correct geometry sheet, the bicycle’s identifying information and the intended cockpit arrangement. Seat-tube length alone leaves out other dimensions that the manufacturer chose to publish separately. Discuss the actual complete setup rather than applying another brand’s size adjustment rule to KHS.

A chart does not replace a suitable fitting assessment or a chance to evaluate the specific bicycle. The KHS reference collection connects this measurement question to model guides, and the brand background article helps distinguish families before a chart is selected.

FAQ

Does XS mean one fixed KHS measurement everywhere?

No. Keep the model, market and named dimensions with the label.

Does the linked XL row guarantee local availability?

No. A geometry entry is not confirmation of a seller’s available sizes.

Is the road photograph a measured Flite 720 specimen?

No. It supplies historical context and has no verified model or sizing measurement here.

Official reference 1 (https://www.khsbicycles.com.tw/products/road-bike/flite-720/).

Official reference 2 (https://khsbicycles.com/bikes/2025-khs-models/flite-720-2025/).

Photograph credits and permissions

Photograph 1

Original title: BICICLETA KHS EM ITAJAI - SC.jpg

Creator: Projeto Transite; source-provided creator URI: https://www.flickr.com/people/96759246@N04/

Original source URI: https://commons.wikimedia.org/wiki/File:BICICLETA_KHS_EM_ITAJAI_-_SC.jpg

License / permission: CC BY 4.0

License / permission URI: https://creativecommons.org/licenses/by/4.0/

Modification notice: Original Commons JPEG retained unchanged by this publisher; no new crop, resize, conversion, retouching, re-encoding or metadata removal. Source metadata records earlier Lightroom editing, cropping and rotation; those source edits remain intact. Photograph remains under CC BY 4.0.

Source disclaimer: No endorsement by the photographer is implied. Historical KHS road bicycle photographed on 14 August 2013; exact model and material unverified. Original publication URI: https://www.flickr.com/photos/96759246@N04/13678344353/