State Bicycle Co. 4130 Road v2 Geometry: Keep Actual Top Tube, Effective Top Tube and Reach Apart
State Bicycle Co. 4130 Road v2 geometry contains separate actual top-tube, effective top-tube, stack and reach rows. Those distinctions matter more than assuming every dimension increases smoothly with the size label. Use the detailed millimetre table when recording a comparison, and retain the original document’s inconsistent unit labels as a limitation.
Separate the State Bicycle Co. 4130 Road v2 geometry fields
In the 49cm column, actual top-tube length is 530mm while effective top-tube length is 540mm. In the 55cm column, the corresponding figures are 550mm and 560mm. The different row names are part of the information; dropping the qualifier makes two legitimate entries look like a transcription disagreement.
The State Bicycle Co. 4130 Road v2 effective top tube therefore should not be copied into a field asking for actual top-tube length. Nor does either measurement replace reach. A useful comparison sheet records the row heading, unit and frame-size column together, rather than retaining only a number.
Reach and stack do not follow the same progression
Reach across 49, 52, 55, 59 and 62cm is 391.1, 385.7, 390.6, 411.9 and 405mm. Stack follows a different sequence: 537.1, 537.1, 551.6, 585.3 and 604.5mm. Preserve those published values, including the decreases in reach; smoothing them into an expected progression would create a new chart.
These measurements give a specific document to compare with the five size options on the existing Road v2 listing. They do not measure an individual bicycle’s assembled handlebar position. The catalogue listing is State Bicycle Co. 4130 Road v2 - Black & Tan - (8-Speed).
Keep standover and document units attached
Standover is listed as 769.4, 782.5, 803.7, 839.3 and 862.9mm across the same five columns. It remains a frame dimension, not a rider-height prescription. The PDF’s overview page has some centimetre headings beside values that its detailed page explicitly labels in millimetres; this guide uses the detailed entries without erasing the original inconsistency.
The broader State pages explain the family names alongside this particular geometry record. State Bicycle Co. topic; existing State introduction.
FAQ
Is 530mm the 49cm effective top tube?
No. It is the actual top-tube entry; effective length is 540mm.
Does published reach increase at every size?
No. The table contains decreases that should remain visible.
Does stack measure the complete cockpit?
No. It is a separate frame-geometry field.
Sources
Manufacturer Road v2 specification PDF (https://cdn.shopify.com/s/files/1/0232/3305/files/2026-4130-Road-SizeSpec-FixedHeight.pdf?v=1791313727).
Photograph credits and permissions
Photograph 1
Original title: IMG_6798
Creator: pstmn; creator URI: https://www.flickr.com/photos/post_man
Copyright notice: Embedded EXIF and XMP retain the literal placeholders “Photographer:” and “Copyright:”; these are not names of different people. Embedded sRGB IEC61966-2.1 colour-profile notice: Copyright (c) 1998 Hewlett-Packard Company. This is the colour-profile owner, not the photographer.
Original source URI: https://www.flickr.com/photos/post_man/16587024389/
License / permission: CC BY 2.0
License / permission URI: https://creativecommons.org/licenses/by/2.0/
Modification notice: Original Flickr-downloaded JPEG bytes retained with no local crop, recompression or colour edits. EXIF and XMP retain Adobe Photoshop Lightroom 5.3 (Windows), a RAW-to-JPEG derived event, and the 19 January 2015 save event; earlier processing is unassessed.
Source disclaimer: Historical State Contender owner build as described by the source, with custom wheels and hubs; Walter is the owner, not the credited photographer. Related State Bicycle Co. context only, not a photograph of current Road v2 Black & Tan or proof of its colour, dimensions, parts, material, condition, fit or compatibility. Capture and upload dates do not establish bicycle model year. Exact licence: Creative Commons Attribution 2.0 Generic. No endorsement or warranties are implied; other rights may apply. The unchanged photograph remains under CC BY 2.0; no additional restrictions are imposed.