Surly Krampus with Custom Bionx D500 Kit - USED

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Surly Krampus with Custom Bionx D500 Kit - USED

Love your Surly Krampus or ECR but just want a little more power? This ready made kit is the perfect way to add electric assist to your 29+ Surly bike!

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Free Shipping & Tune Up

Via our standard shipping method - discount applies on checkout!

Currently Not Available


  • All terrain
  • Super strong
  • Great fun
  • Seamless integration
  • Stay out longer
  • Tear it up!
  • Explore new places
  • Stay out longer
All terrain1 Super strong2 Great fun3 Seamless integration4 Stay out longer5 Tear it up!6 Explore new places7 Stay out longer8

Take your adventures to the next level with electric assist from BionX! We custom build these BionX motors right into the Surly Rabbit Hole rim, making it an exact match to your existing Krampus or ECR. The assist boosts your pedaling so you'll still get that awesome bike ride feeling but with a whole lot more wind in your face. Perfect for climbing hills that seemed out of reach and going distances that seemed just too far.

Custom BionX kit for Krampus/ECR features:

  1. Ready to go and built with original Surly rim
  2. With this kit on your bike you'll climb any hill
  3. Black motor matches your bicycle perfectly

The BionX kit installed on a KrampusNot just any BionX will fit. We use the same motor on our Fat Bike kits because they have 32 spokes. Combine that motor with custom cut black spokes and you'll have a kit that matches your style and looks great on the bike.

If you'd rather order a Krampus or ECR with a motor already installed visit our Krampus/ECR BionX bike page.

BionX has one of the best warranties in the business. Check the BionX warranty page for details.


S350:Motor: 48V 350 watt Max Speed: 20 mph
  • Motor: 48V 500 watt
  • Max
  • Speed:
  • 20
  • mph"
Modes:All BionX motors have automatic pedaling assistance as well as no-pedaling throttle power.
48 volt 8.8 ah:442 Watt hours Range: 35 miles max
48 volt 11.6 ah:556 Watt hours Range: 50 miles max

Reviews & Questions


All products are built and tuned up / checked prior to delivery or pickup!

Choose how you order

  Over the phone
  In Store
Request for in store pick up or shipping with any method

We can ship all products to any of the 48 Continental U.S. states and certain items to Canada and other states.

  Professionally built
  Professionally tuned
  Professionally repackaged

After unboxing you can

  Ride your bike or scooter*
  Register Warranty
  Watch our instructional videos
*Due to shipping some small parts may need to be adjusted, filled with air, or installed after delivery.


At NYCeWheels we pride ourselves on our reputation to help you choose the correct product, provide you with the best customer service, and get you back on the road as soon as possible on your bike or scooter.

You can reach us weekdays 11am-7pm, Saturday 10am-6pm and Sunday 11am-5pm (Eastern Standard Time) via phone email or chat.


At NYCeWHEELS we try to make your transaction as smooth as possible. For this reason, we accept all major credit cards, (Visa, MasterCard, Discover, Amex), Checks, and even Paypal where you can now use Paypal Credit as a form of payment for your purchase!

PRO tip: ask for our Freedom to ride financing program for in-store purchases