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68/73mm BB Shell
83mm BB Shell
  • IN STOCK(5+)

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E Thirteen LG1R Crank Arms

The lightest purpose-built DH crankset around. No beefed-up XC cranksets here.

This crank gets extra time with our friend the CNC mill and loses 60g over our LG1+ cranks. A little time in FEA (Finite Element Analysis) land made sure this savings was without sacrificing stiffness. 30mm spindles provide a rigid base for the system while our proprietary P3 Connect Polygon interface creates a more robust, reliable, impact-resistant spindle-arm junction.

LG1+ Crank Manual.
BB Standards Explained


  • Arm material: EXAr Aluminum
  • Arm length: 165, 170, 175mm
  • Spindle material: EXAr (Exalite Race) Aluminum w/ P3 Connect interface
  • Rings: Optional Guiderings / Single Mount Dual Shiftrings
  • BB shell: 68/73 or 83mm
  • Chainline: 51mm / 56mm
  • Color: blackout w/ red spindle
  • Weight: 661g (760g, with threaded BB)
  • Extras: TiNite Plus level bottom brackets

What's in the Box:

LG1r cranks come with the following in the box for easy install:

  • Right crank arm and spider assembly
  • Left crank arm
  • BB install tool
  • Chainring nuts for single and double rings
  • Chainring bolts
  • Pedal washers
  • Instruction manual

Bottom brackets are sold separately in order to fit a variety of frames. Not sure what BB you need? Check our tech info for BB standard information above.

Buy E Thirteen LG1R Crank Arms from Chain Reaction Cycles, the World’s Largest Online Bike Store.

  • Colour: Black
  • Option: 68/73mm BB Shell, 83mm BB Shell
  • BoltCircle: 104mm
  • Length: 175mm, 170mm, 165mm
  • Material: Alloy