State Bicycle Co. 4130 Road v2 Bottom Bracket: Separate Shell, Spindle and Chainring Fields

The State Bicycle Co. 4130 Road v2 bottom bracket record gives 68mm x 110mm with English-threaded, square-taper and sealed-cartridge wording. The drivetrain also has a separate 110 BCD chainring entry. The repeated number does not make those two records interchangeable, so keep the complete labels when asking about a part.

Quote the State Bicycle Co. 4130 Road v2 bottom bracket record

The PDF identifies a sealed cartridge bearing, square taper and English threaded construction. It gives the combined dimensions as 68mm x 110mm. Copy the complete entry into an enquiry rather than retaining only “110”, which could be mistaken for the separate chainring figure elsewhere in the same document.

A supplier may ask about shell or spindle measurements when identifying an actual assembly. The published entry is a starting record, not a measurement taken from the bicycle in front of you. The cited pages do not provide a measuring diagram or an installation procedure that this article can reproduce.

The chainring’s 110 BCD is a different field

The chainring entry lists forged 6061 aluminum, 42T and 110 BCD. The PDF overview additionally says four-bolt chainring. Retain that complete wording rather than assuming a bolt pattern from familiarity with other cranks that also carry a 110 BCD description. A shared number does not settle the remaining interface details.

The existing Road v2 listing gives the enquiry a precise model identity. It distinguishes this geared Black & Tan record from another State platform that happens to use a square-taper component. The catalogue listing is State Bicycle Co. 4130 Road v2 - Black & Tan - (8-Speed).

Do not turn identification into a replacement approval

A sealed-cartridge description says what is recorded, without demonstrating the condition of an installed bearing. Likewise, square taper is not a complete answer to every crank, spindle or chainline question. No tightening torque, substitute spindle length or chainline value is supplied by this reference.

For a component query, keep the bicycle identity, bottom-bracket entry and separate chainring entry together, then identify the actual markings. This avoids ordering from a number detached from its component. The photographed Contender owner build cannot identify the Road v2 bottom bracket or establish what a changed bicycle requires.

Wider State family background is available in the existing topic and introduction. State Bicycle Co. topic; existing State introduction.

FAQ

Are both printed 110 values the same specification?

No. One is in the bottom-bracket dimensions; the other is chainring BCD.

Does the PDF say four-bolt chainring?

Yes. Its overview includes that wording.

Does square taper alone approve a replacement crank?

No. That label leaves other matching requirements unresolved.

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.