I've already fitted Hagon Nitros to the rear and I'm looking to improve the front. I've read about cartridge forks and emulators: are they model specific? If so, are they available for the Speedie? If not, will I be able to use those of another bike, assuming similar dimension? Or, am I limited to changes to the springs and oil?
I know this is an old thread but thought I'd update it. Hagon do progressive fork springs for our bikes. I didn't get a part number but they're listed under America/Speedmaster. As of yesterday, £62 inc oil (20 weight) and postage. Great to deal with. Hagon-0208 502 6222 (UK number)