Felt Breed Expert Crank Length: Keep the 165mm and 170mm Size Groups Separate

Felt Breed Expert crank length is published in two frame-size groups: 165mm for 47, 51 and 54, and 170mm for 56, 58 and 61. These are component entries in the manufacturer’s Expert record, not a recommendation based on rider height. Keep the group heading with the number when comparing an offer.

Read the Felt Breed Expert crank length groups together

The crankset is named SRAM RIVAL XPLR AXS with a 42T chainring. The millimetre figures describe the listed crank arms; the tooth count describes another part of that assembly. Asking for a “42” without identifying the field could lose the distinction between gearing and component length.

For Felt Breed 165mm cranks, the source places three labels in one group. Its second line assigns the longer entry to another three labels. A change between those lines does not prove that either length suits a particular rider, and it supplies no permission to substitute one assembly for another.

Do not assign the small-size labels by guesswork

The linked catalogue currently lists six Expert configurations labelled 49, 52, 54, 56, 58 and 61. The manufacturer’s component groups instead begin 47 and 51. This mismatch remains unresolved. In particular, the presence of six labels on each side does not establish that 49 means 47 or that 52 means 51.

A Felt Breed crank size groups comparison should therefore carry both records into the enquiry. Ask the supplier which specification applies to the actual frame being offered before treating the grouped component entry as its equipment. A similar model name is useful identification context, but does not settle a size-label discrepancy.

Make the equipment enquiry specific

For a Felt Breed Rival crankset question, retain the complete model name, front tooth count, published size group and actual installed-arm marking. This keeps a catalogue enquiry attached to a real offer instead of an unidentified build. The catalogue listing is Felt BREED | EXPERT SRAM RIVAL XPLR Bike — Glossy Burgundy.

The page says specifications can change with factory parts supply and directs readers to the dealer for exact stock specifications. That qualification matters for Felt Breed large frame crank arms too. It is not a list of approved alternatives or evidence that a different length has already been fitted.

The historical road photograph supplies brand background; the current component groups come from the named Expert record. Felt topic; Felt introduction.

FAQ

Does 42T describe crank-arm length?

No. It is the listed chainring tooth count, separate from the millimetre entries.

Can 49 be silently substituted for 47?

No. The two records use different labels and provide no conversion.

Does the longer group determine my fit?

No. These source entries do not provide an individual crank-length assessment.

Sources

Manufacturer Expert specification (https://feltbicycles.com/products/new-breed-expert-sram-rival-xplor).

Photograph credits and permissions

Photograph 1

Original title: Felt BS road bicycle

Creator: Petar Milošević; creator URI: https://commons.wikimedia.org/wiki/User:PetarM

Copyright notice: Embedded sRGB IEC61966-2.1 colour-profile notice: Copyright (c) 1998 Hewlett-Packard Company. This is the profile notice, not photographic authorship.

Original source URI: https://commons.wikimedia.org/wiki/File:Felt_BS_road_bicycle.jpg

License / permission: CC BY-SA 4.0 International

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

Modification notice: Original Wikimedia-hosted JPEG bytes retained without crop, recompression or colour edits. EXIF and XMP retain Adobe Photoshop CS6 (Windows) save-history notices from 22 April 2018; earlier processing is unassessed.

Source disclaimer: Historical Felt road bicycle, source-titled Felt BS road bicycle; the visible top-tube marking reads Z85. Source title and pixel marking remain distinct; capture and upload dates do not establish model year. Related Felt brand context only, not a photograph of current BREED Expert or evidence of its dimensions, components, clearances, fit, condition or compatibility. Source photographer optionally appreciates an e-mail notification to petarmslo@gmail.com for use outside Wikipedia; no notification or contact is claimed. No endorsement or warranties are implied; other rights may apply. The unchanged photograph remains under CC BY-SA 4.0; no additional restrictions are imposed.