katyotter
Registered user
I'm looking for an oversize piston for my 1992 Serow (don't ask) - Yamaha don't make one and Wemoto said if they knew where to source them they'd stock them. An American site had a post saying the Yam Timberwolf ATV engine is exactly the same as the Serow except for the transmission so they'd used its standard piston at 71mm which is 1mm over the Serow standard. Does anyone on here know anything about this or does anyone have any other suggestions? All help gratefully received.