Pure Cycles Original bottom bracket: read the 68 x 110.5 mm entry
The Pure Cycles Original bottom bracket is described as “Sealed Cartridge, 68 × 110.5 mm” on the detailed 671003 sheet. Preserve that complete entry when identifying the published component. The line does not name a thread standard, taper or replacement part number.
Read the Pure Cycles Original bottom bracket entry literally
The two numbers appear together after Sealed Cartridge. The cited line does not individually label their axes, so this guide does not silently expand the entry into a shell, spindle, taper or threading specification. Quoting the whole description is more accurate than turning a partial catalogue line into an order-ready replacement instruction.
A mechanic or supplier assessing the actual bicycle will need its component identity and applicable information. The published dimensions alone do not establish chainline, tightening torque or permission to exchange the cartridge for another item with similar numbers.
Keep crank length in its separate record
The detailed crankset field says three-piece alloy, 170 mm. The geometry chart has a different scope: 165 mm in the 47 and 50 cm columns, 170 mm in the 54, 58 and 61 cm columns, and 175 mm in the 64 cm column. Both records should travel with a parts enquiry.
Do not resolve that difference by assigning the detailed sheet to every frame size. Nor does the four-letter Juliet selector map every Small, Medium, Large and XL option onto those six numerical columns. Establish the actual bicycle's identity before using a chart entry as its component description.
Separate neighbouring drivetrain measurements
The pedal entry gives 9/16 inch, while the chainring entry gives 44T and 1/2-inch × 1/8-inch notation. Those belong to their own components. Their presence nearby in the table does not identify the bottom-bracket thread or alter its published combined dimensions.
The local model is Pure Cycles Original Bike — Juliet. The photograph merely locates the crank/frame junction on another bicycle; the hidden cartridge cannot be identified from it. Read the Pure Cycles background guide for the wider range.
FAQ: identifying the cartridge record
Does the quoted line give a replacement part number?
No. It provides Sealed Cartridge and combined dimensions, without a part number.
Does every geometry column list a 170 mm crank?
No. The chart also lists 165 mm and 175 mm in its specified columns.
Can the pedal dimension identify bottom-bracket threading?
No. The 9/16-inch entry describes the pedals, not the bottom bracket.
Find the related model information in the Pure Cycles topic.
Manufacturer references: Original 671003 specification (https://www.purecycles.com/pages/original-specs-671003); Original product and geometry (https://www.purecycles.com/products/original-21154).
Photograph credits and permissions
Photograph 1
Original title: Minimal White Road Bike
Creator: erik odiin (Erik Odiin); creator URI: https://unsplash.com/@odiin; primary photo attribution: https://unsplash.com/photos/white-fixie-bike-LWv3bsFvpPc
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Original source URI: https://negativespace.co/minimal-white-road-bike/
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Source disclaimer: No individual-photo copyright notice supplied. NegativeSpace footer ©2026 NegativeSpace.co is a website notice, not photographer copyright. The provider says it vets photographs but users remain responsible for the validity and safety of reuse. CC0 makes no warranties; other rights may apply; no endorsement is implied. The NegativeSpace page was published on May 17, 2017 and modified on September 23, 2018; the primary Unsplash photo page was published on July 24, 2017. These different publication dates do not establish the capture date or the bicycle model year. This is a different unidentified road-style bicycle, not proof of any selected native product, current model or year, measurements, parts, fit, load, safety, condition or compatibility.