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Shop | Components | Drivetrain | Cranksets | 100% Pure PAUL Cranks

Product Videos

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100% Pure PAUL Cranks

These crankarms are CNC machined in-house from ultra-strong 2024 American alloy. This allows us to remove a lot of material for an elegant design, while retaining excellent strength and stiffness. J.I.S. Square Taper means you can really fine-tune the Q-Factor. 3-bolt Direct-Mount means you can choose from a wide range of chainrings and offset options.

$308.00 – $375.00

Clear

Technical Information

  • Material
    American Milled 2024 Aluminum
  • Available Lengths
    155, 160, 165, 170, 172.5, 175, 180
  • Finish
    Black, Silver, Purple, Pewter & Hand Polished
  • Weight
    516g (Pair of 180mm) including chainring bolts, crankbolts, and extractor caps
  • Chainring Spline
    3-Bolt SRAM Direct Mount Spline
  • Instructions
    Download

Product Story

When Paul suggested we bring back our classic 100% Pure Cranks, but with an updated design featuring a 3-bolt direct-mount chainring spline and self-extracting crankbolts, we got excited. When he suggested JIS Square-Taper for the bottom bracket, we were like, “Uh, square-taper in 2025? I dunno…”

But a funny thing happened once we started mounting and testing prototypes. We realized we could really fine-tune the Q-factor and chainstay clearance of the crankarms via BB spindle length, then we could get the chainring nice and close to the chainstay for better chainline in the bigger rear cogs via chainring offset (0, -3, -6). Q-Factor nerds rejoice!

Crankbolts, extractor caps, and chainring bolts are included. Bottom bracket and chainrings are not. Read the instructions (included, or in the Technical Information above) to help determine chainring offset and bottom bracket length.

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Bike Camping Froggie Bottles are back! This time o Bike Camping Froggie Bottles are back! This time on toad-green BPA-Free Sustain (recycled) Nalgenes. Artwork by the homie @hurrydive 🐸 Live on the website now!
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NASA-level standards of tolerance, function, and reliability. 
We think we’ve arrived at the highest quality handlebar plugs in the world. Cheap rubber and 
plastic construction were never good enough. 100% CNC machined aluminum expanding-
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loose.
 Available in every color of the rainbow on our website, or from your favorite bike shop, now!
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Paul Component Engineering
  • info@paulcomp.com
  • 530–345–4371
  • 11204 Midway
  • Chico, CA 95928
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