Lost, stripped or damaged the main bolt on a Praxis M30 crank? This kit replaces the whole assembly: the 8mm hex main bolt, its washers and the self-extractor that lets the same bolt push the left arm off the spindle.

How it works

The main bolt clamps the left arm onto the M30 spindle. Undo it and it backs out against the self-extractor, pulling the arm off, so no separate crank puller is needed. If the extractor itself ever has to come out, it is removed with a cassette lockring tool.

Fitting notes

Praxis's crank bolt guide gives 48–52Nm for the main bolt (50Nm on the product page) and 20Nm for the self-extractor. Use a torque wrench and follow the guide's thread preparation. Fitting is a separate workshop service: the Tune Cycles workshop can fit it and torque it to spec.

Compatibility & fit

For Praxis M30 crank arms only. Praxis fits this bolt to all its M30 cranks (the Zayante Carbon, Alba, Cadet, Girder, Zane and DH-9 among them) and to its M30/SL eCranks. It is not the bolt for Praxis M24 or ETOR cranks, which have their own kits. Compare the photos with your crank, or ask us if you are not sure which bolt you have.

Praxis warrants its components to be free from defects in materials or workmanship for two years from the original purchase date, to the original owner with proof of purchase. Normal wear and tear, damage from incorrect installation or the wrong tools, crash, impact, abuse and any modification are not covered. This is in addition to your rights under the Australian Consumer Law, so keep your proof of purchase. For warranty support, return the product to Tune Cycles and we'll manage the claim with Praxis's Australian distributor.
  • Main bolt, washers and self-extractor in one kit
  • M16 x 1.0 thread, 16mm long
  • 8mm hex to fit and remove the crank arm
  • Main bolt torque 50Nm (Praxis guide: 48–52Nm)
  • Self-extractor removed with a cassette lockring tool
BrandPraxis
PartMain crank bolt and self-extractor kit, with washers
FitsPraxis M30 cranks; Praxis M30/SL eCranks
ThreadM16 x 1.0, 16mm length
Tools8mm hex (main bolt); cassette lockring tool (self-extractor)
TorqueMain bolt 50Nm (48–52Nm); self-extractor 20Nm
Praxis codeTP-3033
SKU DSG-PXTP-3033
Brand Praxis
Shipping Weight 0.0300kg
Shipping Width 0.250m
Shipping Height 0.100m
Shipping Length 0.400m