Whats the best way to clean a M2 primary cover, mine's a rough finnish so it makes it difficult to clean,any info please, thanks Geoff.

I use WD40,mine are the silver cases

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Should Have Stuck To making Tubers

When mine is clean I spray "back to black" on it and let it air dry. Makes it much easier to clean afterwards.

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Buell S1
Buell S3 (Topless for now)
Buell XB12S
Piaggio X8 400ie
Yamaha XTZ750 Super Tenere (x2)
Suzuki GSXR750WR
BSA B441VS
FJR1300

On Muffins Black cases I use silicon spray after washing and drying them brings them up a treat

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2001 X1 2009 1125CR 2006 Uly X3 2010 Uly a fully Maz'd S1 and a 1991 RS1200 Westwind.

Well mine are un painted rough alloy, the only thing that I find will remove stains etc is petrol, and in turn that dries up streaky and then I'm back to square one again, I like to use solvol autosol but its a job to get it all out when finnished. what a bugger (I will try WD40 thanks BBB)

They would've left the factory painted (silver), Geoff.... textured not smooth, but painted nonetheless.
If you can't see any areas where it's flaking, I'd suggest it's still painted all over, as I can't imagine anyone going to the trouble of stripping all the paint off and just leaving it raw... easy enough to mirror-polish though.

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'98 M2 Razorback, it's a keeper.

http://www.actioncan.com/type/512/ZG-90 ... sing-Paint
matches perfectly

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2017 KTM 690 Duke
2001 M2
2019 Street Triple RS
2004 Monster S4R
Wilier La Triestina

Try spraying 'muck off' on it then scrub with warm water and brush then wipe over when dry with a cloth and ACF50 or GT85.

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Buelling is exhillarating
But downhill bike racing is so terrifying it makes your arse grow teeth

Yes guys come to think of it it probably is painted,(silver) and I will try some of your ideas over the weekend thanks Geoff.