Praxis Works

EC-Type 2 Alloy E-Bike Crank Arms

Praxis Works EC-Type 2 Alloy E-Bike Crank Arms are a purpose-built replacement/upgrade option for modern high-torque eMTB and eBike systems that use an ISIS spindle interface. With forged alloy construction and motor-specific Q-factor targets, these arms deliver a clean fit on compatible Bosch and Avinox (DJI) drive units while offering short-length options to improve pedal clearance where it matters most.

• Motor-specific compatibility - Fits Bosch Gen5 CX or PX (BDU34/38) motors and Avinox (DJI) motors that use the ISIS standard for straightforward spec-matching and installation
• Forged alloy arms - Stiff, durable construction suited to the higher loads and frequent impacts common to eMTB and heavy-duty eBike use
• Short length options - Helps increase pedal/ground clearance and reduce pedal strikes on technical trails, tight corners, and steep climbs
• Defined Q-factor by platform - 179mm Q-factor for Bosch setups and 170mm Q-factor for Avinox setups to keep stance width aligned with the motor system
• Alloy self-extracting crank bolts - Simplifies removal for service, drivetrain work, or crank swaps without extra puller tools