Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > Class A

[mbracing748]

I hope to run in the DD series next year, as I have a national license I need to run in the Class A 618cc.

Looking at the regulations it mentions that everything about what you need to keep. My question is – because the 750ss uses the same bottom end can I change the Heads, Barrels and pistons for the 618cc, or do I need to run the 600 cases?

I’m currently building a Race 888 so I’m trying to keep the cost down for the first year. So I'm looking at different ways of obtaining a bike as there does not appear to be many Class A bikes for sale or even rent.

What I should have asked is:- Can I use a 750ss / monster Bike and downgrade to a 618cc. Looking at the regs everything can be upgrade to a 750ss spec apart from the engine CC.

[Ghost]

You can use your 750 cases just be mindful of the oil ferrule between the cases and barrels as on my 750 cases the holes are larger than the 618.

[bally71]

I think the stroke is different

[mbracing748]

same stroke 61.5mm

620 - 80mm bore
750 - 88mm bore

750 Valves are the same size.

[mat2hew]

would it actually be cheaper to replace the heads & barrels? a used engine ain't that much.

[dunlop0_1]

James Gerrard has a cracking A bike for sale.

https://www.facebook.com/photo.php?f...13 917&type=1