Replacement rubber boots that protect the ends of Praxis carbon crank arms. Praxis has changed its arm shapes over the years, so there are three boots: measure your crank end, match it to the guide below and order the one that fits.

Which boot?

  • Boot 1: Gen 1 Girder and most older Praxis carbon cranks; Praxis's Brose, Fazua R50 and TQ carbon eCranks
  • Boot 2: Zayante, Doon and Gen 1 Lyft / Lyft HD; Praxis's older Bosch and Yamaha carbon eCranks
  • Boot 3: Gen 2 Girder and Gen 2 Lyft MTB cranks; Praxis's ETOR carbon eCranks
  • Specialized carbon eCranks: arm shapes have changed over the years, so Praxis says you must measure to find Boot 1, 2 or 3

Measure first

Praxis recommends measuring the end of your specific carbon crank arm before ordering, even if your crank is listed above. Its boot guide gives the reference sizes as 33 × 16 mm (Boot 1), 38 × 15 mm (Boot 2) and 39 × 16 mm (Boot 3), and each boot is marked on the back. Bring the bike in and the Tune workshop can check which one you need.

Options

SizeReference sizeTypical cranks
Boot 133 × 16 mmGen 1 Girder, older Praxis carbon cranks, Brose / Fazua R50 / TQ carbon eCranks
Boot 238 × 15 mmZayante, Doon, Gen 1 Lyft / Lyft HD, older Bosch and Yamaha carbon eCranks
Boot 339 × 16 mmGen 2 Girder, Gen 2 Lyft, ETOR carbon eCranks

Compatibility & fit

For Praxis carbon cranks and carbon eCranks only; these boots don't fit Praxis alloy cranks. Measure your crank end against Praxis's guide before ordering.

Praxis warrants its components to be free from defects in materials and workmanship for 2 years from the original purchase date, for the original owner with proof of purchase. Normal wear and tear isn't covered. Damage from crashes, impact, incorrect installation (including using the wrong tools) or modification is also excluded.

This cover is in addition to your rights under the Australian Consumer Law. 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.

  • Rubber protector boots for Praxis carbon crank arms
  • Three sizes to suit changes in arm shape
  • Covers Girder, Lyft, Zayante, Doon and Praxis carbon eCranks
  • Boot number marked on the back
  • Not for alloy cranks
ProductCarbon crank protector boots
MaterialRubber
FitsPraxis carbon cranks and carbon eCranks only (not alloy cranks)
Reference sizesBoot 1: 33 × 16 mm; Boot 2: 38 × 15 mm; Boot 3: 39 × 16 mm
OptionsBoot 1, Boot 2, Boot 3
SKU DSG-PXBoot
Brand Praxis