RX3 and maybe 4 speedo calibration
 

Can’t find the post now but...
I can find that small dongle thing Spud ruder n others used to calibrate the speed and could make a plug n play for about the same $75 as on eBay
Several things:
With the 19 inch wheel on RX3 is it still off?
How accurate is the RX4? Same plugs?
Is there some slight demand and enough to offer the item with the only benefit that it plugs in between loom and stock harness so no cutting etc? Something worth while or..?

Yes it's definitely still quite off with the 19 inch wheel on the RX3. I had a 2018 with the 19" wheel and the speedo was somewhere around 10% optimistic.

Mine needed around 9% change with the 19" wheel.

The thingy name was "SpeedoDRD" fwiw

I found a supplier that sells the same as you have - making to suit RX3/4 shouldn't be hard but my question is should I offer? Meaning just plug n play rather then soldering in etc.

They are not so cheap in China and they are %75 on Ebay so there is a margin to be had for me and a benefit for customer to just plug between factory sensor and main loom etc.

I have the RX3 sample as I have that bike - RX4 I need to see the plug or I may need to buy a sensor as I do not know anyone with a bike locally

I don't know how to tell you whether it's worth offering or not; if I still had an RX3 I would definitely buy one

It's hard for me to know what the market might be. Most people don't seem to give a damn about correcting their speedo. I've calibrated both my car and bike, but don't know a single other person in my circle of friends who has or cares.

I calibrated the speedo on my SSR Buccaneer, and I intend to calibrate it for my rx3 now too. I don’t mind paying money for a plug and play option. What options are out there?