right ive got the piston kit sorted i was wondering can anybody name the top make for gearbox oil for my dt i wanna get the best as its probably not been changed in a while

I use motul transoil but absolutely any good make of oil is fine so long as its for motorcycles, even the oils labellet 4T are fine because its just a gearbox at the end of the day, its more important to change it occasionally rather that worry about which brand IMO

ok ill order that and just to double check the arrow on the piston points to the exhaust port dont it?

arrow to the front

it is pointing the way out