||68mm ONLY Black Last Few
Proprietary dimensions and spline for use only with Surly Mr. Whirly cranks
- Short; to fit 68 and 73mm BB shells :BBSUWA68
- Long; to fit 100mm BB shells e.g. Pugsley with 17.5mm offset: BBSUWA10
- XL; to fit 100mm BB shells but for Moonlander with 28mm Offset, spindle length 171mm: BBSUWA71
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.