# 1200 Sport Speedo Going Haywire
**URL:** https://forum.motoguzziclub.co.uk/t/1200-sport-speedo-going-haywire/23695
**Category:** All CARC models
**Tags:** 1200sport
**Created:** [21 April 2026 11:28 UTC](https://forum.motoguzziclub.co.uk/t/1200-sport-speedo-going-haywire/23695 "2026-04-21T11:28:09Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@LancPeter](https://forum.motoguzziclub.co.uk/u/LancPeter)
#### Post date: [21 April 2026 11:28 UTC](https://forum.motoguzziclub.co.uk/t/1200-sport-speedo-going-haywire/23695/1 "2026-04-21T11:28:09Z")
My 1200 Guzzi Sort must be the fastest one in history. It can do 100mph with the clutch dis-engaged! Seriously I suspect the hall sensor for the Speedo is goosed (maybe dampness as it has started after winter). Does anyone know if there is a generic part shared with other Italian bikes that you can purchase, as Guzzi 1200 ones are scarce.
---
### Author:  [@Brian.Dillamore](https://forum.motoguzziclub.co.uk/u/Brian.Dillamore)
#### Post date: [22 April 2026 12:03 UTC](https://forum.motoguzziclub.co.uk/t/1200-sport-speedo-going-haywire/23695/2 "2026-04-22T12:03:10Z")
Generally the price for Aprilia, Ducati is the same at around £149 ish, it would be worth looking at fitting a griso as it is fitted to the rear wheel and about £69 you would need to make an extension cable and adjust your speedo value.
The cables never last long on the front sadly.
---
### Author:  [@LancPeter](https://forum.motoguzziclub.co.uk/u/LancPeter)
#### Post date: [23 May 2026 14:12 UTC](https://forum.motoguzziclub.co.uk/t/1200-sport-speedo-going-haywire/23695/3 "2026-05-23T14:12:28Z")
Hi Brian, I’ve resolved this and it brings up interesting questions. So the Speedo was going haywire and reading up to full scale 150mph. Taking a couple of days of work to work on a couple of bike I looked at the 1200 this morning.
Witness marks were found on the sensor and on the Cap-head screws holding the discs to the front hub. I have not touched this. The last people to touch the front wheel were Shorrocks motorcycle in Preston who (according to them) were Moto Guzzi agents in the past. They replaced a fork seal and a front tyre.
The solution was to place a washer between the fork leg and the sensor housing. A test ride showed stable movement of the needle in the speedo.
Maybe others have “bad” cables that may not be faulty.
Hope it helps others
Peter