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Praxis Works Girder MTB Crankset
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Praxis Cranksets

Praxis Works Girder MTB Crankset

Niel Ubod December 16, 2025

$310.00

Top-level XC/Trail crank for Praxis M30 bottom brackets

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Praxis Works Girder MTB Crankset

The Praxis Works Girder MTB Crankset your is top-level XC and Trail crank with premium finish. Featuring a full carbon fiber construction, the Girder’s crank arms are light, stiff and ready for the trails. The Girder crankset is compatible with 3-bolt direct mount chainrings and fits Super Boost (55 mm chainline), Boost (52 mm chainline) and Standard (49 mm chainline) frames.

 

Key Product Details

Compatibility:

The Praxis Girder MTB Crankset is compatible 3-bolt direct mount chainrings, as well as with the power2max Praxis MTB Power Meter. It uses a M30 spindle (30 mm/28 mm) spindle and fits Praxis M30 bottom brackets.

Key Features:

Carbon fiber crank arms, M30 spindle (30 mm/28 mm), Praxis 3-Bolt Direct Mount interface, 498 grams (170 mm), 2-year warranty. See Specs tab for more information.

Advice From Our Staff:

The Girder is our go-to XC/Trail crankset. It’s not as sexy as the LYFT, but you still get carbon fiber cranks and premium fitment for a very reasonable $310.

 

Praxis MTB Crankset Comparison

ModelPriceCrank ArmsSpindle SizeWeight (170 mm)Takeaway
Praxis Works Cadet MTB Crankset$175AluminumM30 (30 mm/28 mm)558 gramsValue friendly XC/Trail crankset
Praxis Works Cadet HD MTB Crankset$175AluminumM30 (30 mm/28 mm)640 gramsValue friendly enduro crankset
Praxis Works Girder MTB Crankset$310CarbonM30 (30 mm/28 mm)498 gramsTop-level XC/Trail crank with a premium finish
Praxis Works Girder HD MTB Crankset$310CarbonM30 (30 mm/28 mm)545 gramsTop-level enduro crank with a premium finish
Praxis Works G2 LYFT MTB Crankset$420Carbon30 mm420 gramsPraxis’ lightest and stiffest Pro-level XC and trail crankset

 

Other Versions to Consider

LYFT MTB Crankset: We also sell the Praxis Works LYFT MTB Crankset. The LUFT is Praxis’ flagship MTB XC/Trail crankset. It’s also pricer at $450.

Girder HD Crankset: If you are looking for an Enduro crank that is fully huck-worthy, we might recommend the Praxis Girder HD. It’s very similar to the Girder here, but features slightly beefed up 545-gram crank arms.

Compatibility

  • Chainring/Power Meter: This crankset is compatible 3-bolt direct mount chainrings, as well as with the power2max Praxis MTB Power Meter
  • Bottom Bracket: It fits Praxis M30 (30 mm/28 mm) bottom brackets

Praxis Girder Specs

  • Interface: Praxis 3-Bolt Direct Mount
  • Crank Arm Material: Carbon fiber
  • Spindle Size: M30 (30 mm/28 mm)
  • Chainrings: 1x
  • Chainline: Super Boost 55 mm (with 0 mm offset ring) | Boost 52 mm (with 3 mm offset ring) | Standard 49 mm (with 6 mm offset ring)
  • Q-Factor: 178 mm
  • Weight: 498 grams (170 mm)
  • Warranty: 2 years

Tools Needed for Installation

You will need the following tools for installation of this product. You can shop for the required tools on our Tools Page.

  • 8 mm Allen key
  • T25 Torx bit
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