Girder M30 Carbon MTN Crankset

  • Sale
  • $459


Now back IN STOCK!

The all new Girder Carbon sets its sights to become the go-to crank for the Trail / Enduro world.  With the combined benefits of a wide bearing stance, 30mm aluminum spindle, and now lightweight carbon arms, this is a fantastic upgrade for any bike and rider.

  • Carbon arm construction
  • 170 / 175 | 3-bolt direct mount ring interface
  • M30 Spindle | Requires Praxis M30 BB
  • Wave Tech DM ring 49mm or Boost 52mm chain line
  • Works with 10/11/12sp chains
  • Weight  542g +/-   (175 with 32T)
  • Q-Factor 172mm
  • INSTRUCTIONS HERE

 

BB : The Girder Carbon M30 mountain crank requires the use of a Praxis M30 bottom bracket as it has a 30mm drive bearing, and a 28mm non-drive bearing unique to Praxis.    Please choose from the M30 options above for your specific frame spec.

DM RING :   We make two versions of our DM rings for correct chainlines.  “DM-A” or “DM-B”

When installed on a Praxis mtn crank :  DM-A = 49mm NON-BOOST Chainline.
When installed on a Praxis mtn crank :  DM-B = 52mm BOOST Chainline.

Note : Chainline is critical.  Do NOT install another brand DM ring on a Praxis Mtn crank as the chainline will not be correct 49mm or 52mm Boost.