Cold Forged Aluminum options that are compatible with many e-Bike motors like Bosch, Yamaha, Brose, Fazua and even alloy versions for Specialized ISIS and M30 “SL” motors.  See spec below for full compatibility and options…

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See the drop down for the specific AL arm set you need.
STANDARD- ISIS spline set optimized for Bosch/Yamaha, will work on Brose/Fazua-R50/TQ motors
HEAVY DUTY- ISIS spline "HD" set optimized for Bosch/Yamaha, will work on Brose/Fazua-R50/TQ motors
SPECIALIZED-ISIS- Made/shaped for Specialized eBikes with steel ISIS spindle
SPECIALIZED-SL- Made/shaped for Specialized "SL" model eBikes with alloy M30 spindle
BUY THIS IF :You are wanting an Alloy eCrank for one of the Motors listed below.
BOSCH with steel ISIS spline spindle (Not Micro ISIS!)
YAMAHA or Giant with steel ISIS spline spindle
FAZUA-R50 with steel ISIS spline spindle
TQ with steel ISIS spline spindle
SPECIALIZED with steel ISIS spline spindle
SPECIALIZED SL with black alloy M30 spline spindle
MATERIALLeft & Right arm set | Cold Forged Aluminum | Heavy Duty "HD" forged option also
MAIN BOLT8mm AL main crank bolt for Install/Self-Extract | 50Nm torque
eCranks with ISIS Spline use our replaceable M24 alloy Main bolt/Self extractor
eCranks with M30/SL Spline use our replaceable M30 alloy Main bolt/Self extractor
AVG. WEIGHT485g : Standard Alloy Arm set
558g : HD Alloy Arm set
Q-FactorQ-170mm -STANDARD & HD on Yamaha or Giant SyncDrivePro motor
Q-175mm -STANDARD & HD on Fazua-R50 or TQ motor
Q-176mm -STANDARD & HD on Bosch motor
Q-190mm -STANDARD & HD on Brose motor

182mm - The specific arm sets for/on Specialized ISIS Motor
182mm - The specific arm sets for/on Specialized SL/M30
VIP NOTE- Alloy eCranks do NOT come with crank boot/protectors
- Check your motor spindle type. Our standard & HD alloy cranks are made for "ISIS" spindle motors. They are optimized for Bosch, Yamaha motors.... however they also fit on Brose, Fazua-R50 and TQ motors with ISIS Spindles.
- These cranks do NOT install on Bosch "Micro-ISIS" or "Square Taper" spindle motors
- Visually check your Specialized motor spindle type. The standard Levo/Kenevo/Como/Vado have an ISIS spindle. The "SL" Levo/Kenevo/Creo or Vado SL family use the M30/SL eCrank armsets.
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Praxis warrants components to be free from defects in materials or workmanship for a period of 2 years after original purchase to the original owner. 
However, there are limitations such as normal wear and tear…as “nothing lasts forever” so please read our full Warranty.


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