Ragley Blue Pig Rear Axle: Keep Thread and Hub Records Together

2026-10-28

A Ragley Blue Pig rear axle enquiry should preserve both the wheel interface and the axle description. The 2021 manufacturer frame section lists a 12×148mm Boost rear hub and an M12×P1.5 thru-axle entry. These details narrow the enquiry, but a hub-spacing label alone cannot prove that a separately advertised axle is the right replacement for the actual frame.

Green historical Ragley mmmBOP bicycle beside a stone wall — Historical Ragley mmmBOP owner-build photograph by Dave Haygarth, CC BY 2.0; uploaded to Flickr on 11 July 2010. The source describes the build as “Almost built up... enough for a quick spin anyway”. This is not the Blue Pig model discussed below and does not verify its equipment or a completed assembly. No endorsement implied. Photograph source (https://www.flickr.com/photos/minnellium/4783551445/)

Ragley Blue Pig rear axle: Record the two different catalogue lines

The rear-hub row says 12×148mm Boost. The rear-axle row says 12mm×148mm thru-axle, M12×P1.5. Keep the manufacturer’s wording when sending a parts request rather than shortening it to “Boost axle”. A replacement supplier may need further details that the frame table does not provide, and those details must not be guessed from the nominal hub dimension.

In particular, the 148mm label should not be treated as a verified overall replacement-axle length. The saved frame specification does not supply a separate dimensioned axle drawing or a full part number. Ask for the exact compatible item using the confirmed year and frame identity. Do not assume a visually similar handle or matching colour resolves the missing information.

Separate the front axle from the rear

The standard 2021 fork row lists a 15×110mm Boost front interface. That belongs to the Yari fork, not to the rear frame. A used-bike advert that mentions only “Boost wheels” leaves both actual hub identities and the axle details incomplete. Request front and rear photographs separately, and retain any labels that identify a substituted fork or wheel.

The standard complete bike’s Neutron wheelset and the Race’s Horizon wheelset are both described as Boost and Micro Spline, but they have different published engagement figures. Those wheel descriptions help establish the original build. They do not turn either hub’s name into a replacement-axle specification, nor do they establish what is fitted after years of ownership.

Prepare a useful replacement request

Start with the frame model and year, then provide photographs of the existing axle, its markings and the relevant frame interface. If the axle is missing, say so explicitly. Ask the supplier what additional measurements or identifying details are required. Where there is damage or uncertainty about the interface, have the actual frame assessed before using it as a basis for ordering parts.

The Ragley topic provides the brand index, and the Ragley introduction explains how Blue Pig fits the range. This article is a record of the archived interface, not an installation procedure. Keep the eventual manufacturer-confirmed part identification with the bicycle’s service information so the same uncertain search does not need to be repeated.

Also distinguish a request for the removable axle from one for the wheel hub. Naming the missing item prevents the same spacing entry from being applied to a different purchase question.

FAQ

What thread entry appears for the 2021 Blue Pig axle?

The manufacturer records M12×P1.5 in its rear-axle row.

Does 148mm prove a replacement axle’s overall length?

No. Preserve the catalogue entry and request the exact compatible axle rather than inferring an overall length.

Is the fork’s 15×110mm interface the rear standard?

No. That describes the front fork; the frame’s rear hub entry is 12×148mm Boost.

Sources

Read the 2021 Blue Pig’s 12×148mm Boost rear hub and M12×P1.5 axle entry without confusing hub spacing with a complete replacement-axle specification. Sources checked 28 October 2026: 2021 standard Blue Pig record (https://www.ragleybikes.com/products/blue-pig-hardtail-bike-2021); 2021 Blue Pig Race record (https://www.ragleybikes.com/products/blue-pig-race-hardtail-bike-2021).

Photograph credits and permissions

Photograph 1

Original title: Ragley mmmBOP

Creator: Dave Haygarth; creator URI: https://www.flickr.com/people/minnellium/

Original source URI: https://www.flickr.com/photos/minnellium/4783551445/

License / permission: CC BY 2.0 Generic

License / permission URI: https://creativecommons.org/licenses/by/2.0/

Modification notice: Flickr-provided 1600 × 1064 JPEG rendition of the 3008 × 2000 original. No further crop, colour editing, re-encoding or metadata removal by this publisher; existing source colour treatment retained.