Upside down fork options

[Ruby Racing]

Well, the thing to bear in mind is that you want to keep the speedo sensor as this effects the running/performance of the engine. This narrows down the options somewhat, I reckon your best bet is either an overhaul of the stock forks (new springs + emulators) or Thundercat forks as per Punkstig who managed to get the sensor in there with minimal trouble.

USD forks look great but in this scenario they don't really make much sense imo.

I've done some research on this, nothing conclusive yet though.


One option which I haven't yet tried is to use an Igniter Box from the Thundercat, as that model doesn't have a speedo sensor. Pretty much everything else seems the same, just need an extra block connector and to move some the wires around as the Thundercat has three connectors on the Igniter Box, the Fazer just two.


With regard to the speedo sensor, I bought a second hand Koso just like the one you've pictured. It had been installed in something and the previous owner had spliced in an additional wire from the speedo pick up. It's purely a guess at this point, but I reckon that goes off to the loom in the same way the OE does. So you effectively keep the standard set up and don't send the bike into fault code mode. I've yet to get that far down the road with my build, but I'll mention it on my build page when I have. Whatever, I intend to find a solution.


As for fitting USD forks not making much sense? Yeah, you're spot on. But if we had any sense we wouldn't be modifying a Fazer in the first place! We do it coz we enjoy the challenge and we want to create something unique. Well, that's why I'm doing it. Link in my sig if you're interested.