Crank Arm - Super73 (Single)

OEM crank arms for Super73 electric bikes. If you have any questions on compatibility or fit please give us a call 917-261-5031 or send us an email info@lastmilenyc.com.

Compatibility: 

• 44T 8-Speed - Drive Side arm with chain guard for R/S/Z Adventure Series models.
• 36T Single Speed - Drive Side crank arm with no chain guard the R/S/Z Single Speed Models.
• 125mm - Non Drive Side compatible with all models.
• S1/Z1 Set - For older series single speed models. 

**For MIAMI models you must replace both the Drive Side and Non-Drive Side Cranks. 

PLEASE NOTE: ALL SPARE PARTS SALES ARE FINAL. NO RETURNS, EXCHANGES, OR REFUNDS. COMPONENTS ARE SOLD WITHOUT WARRANTY. THANK YOU FOR YOUR UNDERSTANDING.

Have a question before or after your purchase? Our team is here to help with product guidance, compatibility questions, and order support.

📍 Contact Form
📞 (917)-261-5031
📧 info@lastmilenyc.com

Visit us in-store for hands-on assistance and expert support.

We ship nationwide within the United States. Shipping times and costs vary based on product type and destination.

• Small items typically ship within 1–3 business days
• Larger items and vehicles may require additional handling time
• Pre-orders ship once inventory arrives (estimated dates listed on product pages)

Tracking information is provided once your order ships.