Instruments

The wall chart: which era is your bike?

Era one, roughly 1995–2003: an electronic speed sensor feeding a discrete signal — the simplest world for aftermarket speedos. Era two, from 2004: the gauges became devices on a serial data bus, so a replacement must speak that protocol — this is the window the Koso plug-and-play kits serve (Sportster and Dyna from 2004, Touring 2004–13). Era three, CAN-bus: Softail from 2011, Dyna from 2012, Touring and Sportster from 2014 — a hard wall for earlier-era gauges, needing CAN-native units (Motogadget's plug-and-ride line lives here). The brand on the box matters less than the era on the listing: the same manufacturer makes different electronics for each window, so match the year range exactly.

One more late-model wrinkle: on CAN bikes the cluster holds the odometer and talks to the bike's security, so a replacement gets "married" to the machine with a data-sync step. Budget the pairing into the job, and keep the old gauge until it is done.

When the speedo dies on an older bike

On mid-nineties-onward Evos the usual culprit is not the clock but the transmission-mounted speed sensor: it reads through a magnet that collects metal filings, and because its signal routes onward through the bike's electronics, a failing one also makes self-cancelling indicators misbehave — a weirdly reliable diagnostic pairing. It is one bolt to pull, clean and refit before buying anything. Genuinely dead gauges on that era are usually the cluster's stepper motor, which is when a replacement speedo or a leap to a modern digital dash makes sense. Earlier machines with cable-driven clocks live on through the drives, cables and seals stocked here.

Custom cockpits, and one UK import truth

Custom builders shop this page to delete clutter: a Motogadget Motoscope or a small Koso dial replaces the factory arrangement with one tidy instrument, and on pre-CAN bikes that is a satisfying, well-trodden job. Digital gauges also solve the multi-function problem on stripped-down builds — speed, revs, gear and a fuel warning in one housing.

For imported bikes: swapping a km/h faceplate for an mph one changes the printing, not the electronics — the odometer keeps counting kilometres and the needle still thinks in them. A true conversion means reprogramming or recalibrating the unit itself. Better to learn that here than from an MOT tester.