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Alex SPRK 2.1 650b rim Dimensions

ERD
562.8mm
ISO/ETRTO
650b (ISO: 584)
Left & Right OSB
0mm & 0mm
Spoke Count
16h, 18h, 20h, 24h, 28h, 32h, 36h, 40h, 48h, 64h
Brake Type
Disc Brake
Rim Bead Type
Tubeless
Rim Hook Type
Hooked Rim
Eyelet Type
Single Eyelets
Rim Inner & Outer Width
21mm & 26.3mm
Recommended Nipple Length
12mm
Recommended Tyre Width
From 29mm* To 46mm* wide
Rim Weight
426g
User Note
The width for this rim is misleading. Alexrims technical document states it's inner width as 21mm. However, their website says it's 23mm.
Info

*The tyre minimum width and maximum width have been calculated by multiplying the rim's inner width by 1.4 and 2.2, then rounded to the nearest whole number.

If this is a tubular rim, you can re-calculate the minimum tyre width by 1.1. These measurements should be used as a rule of thumb only and the manufactures recommendations should be used.

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