there have been about 10 people ask me what pistons i use they are spi artic cat 580 twin pistions with machine work done to them.
Roost 'Er
Member
amatosrx said:our 780 have big bore has over 5000 miles on it no problem. he is right the cylinders are small there is not much room for an 800 but 780 works good.
Thanks the kind of reliability im looking for

Ever have it dyno'd?
800
New member
The 800 SRX was the same bottom end, the 74mm bores have thicker aluminum around them as well larger internal transfer castings, the outside looks the same.
What you have to do is bore the cases .125 larger for the wider sleeves and they drop right in. Wher ethey ran out of room was on the top, they have gaskets instead of orings.
What you have to do is bore the cases .125 larger for the wider sleeves and they drop right in. Wher ethey ran out of room was on the top, they have gaskets instead of orings.
no maxx said it was around 160 to 165.Roost 'Er said:Thanks the kind of reliability im looking for
Ever have it dyno'd?
dtd_93
New member
can i put a kit like that on my 600 and make it a hell of a sleeper... lol
you can do it the the 600 srx also.