

Discover a seamless connection for your Keiser M3i with the K2pi alternative converter. This innovative solution links your bike to popular apps like Zwift, Peloton, and even syncs with your Garmin watch.
Are you frustrated with the frequent disconnections of the ‘Keiser M series Bluetooth Converter’ during your rides, or the constant need to replace its battery? You’re not alone.
Choose the K2pi alternative for a hassle-free experience. These USB-powered converters are always ready, ensuring a reliable connection every time you cycle - it simply works!
Shipping Details: (based in UK - ship Worldwide)
- Standard UK delivery for stands/tools: £1.99
- Converters: FREE within the UK
- International shipping for converters: £4.50(tracked worldwide) not EU anymore sorry
- Non-trackable international post for tools/stands: £4.50
• Important Note: This converter is NOT compatible with M-Connect computers.
🛍️ Purchasing & Shipping Information
For Buyers in the USA
• Shipping Costs: Due to new tariffs starting August 29, 2025, a £10 tariff and £4.50 postage fee will be added at checkout.
• Shipping Requirement: Please ensure your telephone number is included with your address, as it is required by the courier for checkout.
For Buyers in the European Union (EU)
• Shipping Restriction: We cannot ship to the European Union from this storefront starting December 2024.
• Alternative Option: If you are buying in the EU, please check our eBay store for availability.
International Buyers (Outside UK)
• Import Taxes: The Buyer is responsible for checking their own country's import rules and maximum cost limits. Any Import Tax or customs fees may be payable by the Buyer upon delivery (e.g., to some countries like the European Union).
Key Features:
Compatibility Check:
Bluetooth Connection:
Tested Apps:
Important Notes:
Requirements:
Before purchasing, ensure that your 2022 Keiser M3i does not have the integrated ‘M connect’ converter computer. The ‘M connect’ computer was optional on 2021 bikes and already connects to various apps. The K2pi proM is designed for older Keiser m3i.
++ How to check which computer your M3i bike has??++
if your bike connects to the Zwift app (without the extra battery powered converter) then you have the NEW M-CONNECT computer (K2pi is not required/compatible)
If it doesn't connect to likes of Zwift (or you may have the old button battery keiser converter for apps), then you have the older Keiser computer and so the standard K2pi (for bluetooth only) or K2pi proM (bluetooth & Ant+) is compatible/ will work with that older model.
User reviews for K2pi converters - https://www.facebook.com/K2pi-108420177959838/reviews/?ref=bookmarks&mt_nav=0&paipv=1
setup video with garmin Fenix 6 watch -
Still unsure which keiser computer you have?? Read this -> http://www.facebook.com/story.php?story_fbid=pfbid0VMbmaAgP8EKFrktHPdLWnPep1yEBSdcMfbD71wFXqUFLfyx5ihadpjYNoohhQXeLl&id=100063985427100&eav=AfZEKsKfotN_bIUBACNGgsGTq2ui-Vz7wqED35uKmUYM81cakHMXNpFxWoRKz9gVPcg&paipv=0
FOR BRAZIL/UAE SALES PLEASE NOTE ADDITIONAL IMPORT TAX WILL BE PAYABLE BY BUYER ON DELIVERY - (this can be ~25-30%, this import tax is not K2pi responsibility to pay)
Made in the United Kingdom (UK).
As a self employed architect and a single parent of two homeschooled kids, I had to take a break from my work during Lockdown 3.0. My keiser bike has been my lifeline in these tough times, keeping me fit and happy while the kids are busy with their studies or when it’s too cold to go outside.
I came up with the idea of making my own keiser Bluetooth converters after seeing how many compalints there were for Keizer’s attempt. (I never bothered with the official Keiser M converter - it had too many issues and was way overpriced - £130 in the UK!)
I started with 10, then 20, then 50, then 100… and I might make some more if there is demand - Let’s see how it goes… Enjoy your ride 🚴🏼♂️🚴🏼
What does K2pi mean? It’s just a short way of saying ‘Keiser to Pi’ (as In raspberry pi computer which I use for every converter).