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How to transfer a Cowboy to a new owner (and what to do if the seller is unreachable)

Cowboy 3 / 4 / Cruiser (Cowboy app)

A Cowboy is locked to the seller's account until they release it in the app. Without the release the buyer cannot unlock the bike. Since the ReBirth takeover, support-assisted transfers are slow and require proof of purchase.

Step by step

  1. Seller: open the Cowboy app, connect to the bike, go to Settings > 'Bike' > 'Transfer ownership' (older app: 'Remove bike').
  2. Seller: enter the buyer's email (the buyer needs a Cowboy account with that email) and confirm. The bike is unlinked from the seller's account.
  3. Buyer: open the Cowboy app, tap '+' or accept the invitation, and scan the QR code on the frame (under the top tube or under the battery).
  4. Buyer: check that lock, alarm and Find my bike work, and review whether the connectivity plan is still active.
  5. Hand over the charger, the battery key (Cowboy 3 / 4 battery lock) and the invoice.
  6. Both parties: keep the app open until both see the bike in the right account; do this before payment.
Tip: Cowboy 4 / Cruiser: the connectivity (SIM) plan is tied to the bike, not the account, but paid subscriptions cancel on transfer. The buyer can re-subscribe in the app.

Can't find it?

If 'Transfer ownership' is missing, update the seller's app. The seller can also remove the bike from the web account at cowboy.com > My account.

Frequently asked

The seller is unreachable. What now?

Contact Cowboy support (help centre in the app or [email protected]) with proof of purchase, the frame number (under the bottom bracket or on the invoice) and a photo of the bike. They check the bike is not reported stolen and move it to your account. Since the 2026 takeover this has taken several weeks; without proof of purchase they will refuse.

Can I ride the bike meanwhile?

Only if it was handed over unlocked. As soon as it locks (auto-lock or the seller locks it remotely) you are stuck.

Does the previous owner keep seeing my GPS location?

Not after the transfer. Until then, yes: another reason to insist on the transfer before paying.

Other Cowboy 3 / 4 / Cruiser (Cowboy app) guides

Cowboy: switch mph to km/hCowboy: auto-lock, alarm and Find my bikeCowboy: pair the app (Bluetooth)Cowboy: firmware updateCowboy: Adaptive Power and assistCowboy: lightsCowboy: speed limit (25 km/h EU / 20 mph US)Cowboy: change the app languageCowboy: ride history and trip data
Still stuck? Take a photo of the display and show it to a local e-bike workshop. Bring the bike's system name (e.g. Bosch Performance Line CX) and the exact code; that saves diagnostic time and money.