The Enviolo EX Extreme hub is specifically designed for heavy-duty cargo bikes and e-cargo bikes that need to transport extreme loads. This hub offers stepless, low-maintenance, and virtually silent shifting, ideal for professional use and heavy-duty transport applications.

 Key Features:

 - **Stepless shifting:** No fixed gears, but a continuously variable system for smooth shifting, even under heavy loads.

 - **High load capacity:** Suitable for vehicles up to 300 kg (system weight) and a maximum torque of 100 Nm.

 - **Shift range:** 380% (ratio 0.5 – 1.9), so you always have the right gear, even with a heavy load.

 - **Robust and durable:** The closed construction protects against dirt and moisture, which extends the lifespan and keeps maintenance to a minimum.

 - **Compatibility:** Suitable for 36-spoke rims, 6-hole disc brakes, and compatible with both manual and automatic (AutomatiQ) operating systems.

 - **Application:** Ideal for heavy cargo and box bikes, for example for logistics, delivery services and other professional applications where reliability and strength are required.

 **Summary:**
 The Enviolo EX Extreme hub guarantees a unique, stepless riding experience under the toughest conditions and is the ideal choice for companies and users who demand maximum performance and minimum downtime.


 Only applicable with specific Extreme hardware that fits the axle.

 - CVP-STDH-12-KIT

 - EX-12X148-SYN-KIT

 - EX-12X148-MAX-KIT

 - EX-12X148-SHI-KIT

 - EX-12X148-DTS-KIT

 The Enviolo EX Extreme hub is stronger than the HD Heavy Duty hub because it's designed for even higher loads and heavier cargo applications. The main difference lies in the maximum permissible vehicle weight and the robustness of the construction:


 
 Maximum vehicle weight:
  

   
 The HD Heavy Duty hub is suitable for a total vehicle weight of up to 250 kg2.
   
 The EX Extreme hub is designed for cargo bikes up to 300 kg and even up to 500 kg for certain variants.
  



 
 Maximum torque:
  

   
 Both hubs can handle a maximum torque of 100 Nm at 160 kg (HD) and 300 kg (EX Extreme) respectively.
  
 

  

   
 At the maximum vehicle weight (HD: 250 kg, EX Extreme: 500 kg) the permissible torque is 85 Nm.
  



 
 Axle and spoke configuration:
  

   
 The Extreme hub has a thicker axle (M12 instead of M10) and comes standard with 36 spoke holes for extra strength.
  



 
 Application:
  

   
 The EX Extreme is specifically designed for professional and industrial use, such as heavy cargo bikes for parcel delivery and “last mile delivery”, where higher weights are regularly used.
  


 In short, the Enviolo EX Extreme is stronger because it is built to handle a higher total weight load, has a more robust axle and spoke arrangement, making it suitable for the heaviest cargo and transport bikes where the HD Heavy Duty hub is no longer sufficient.