Topic: 350 4 Race Pistons

[bsa a65]

Hi, anybody know if there are high compression pistons available for a 350 4, standard 47mm bore , or an alternative that can be used.

[MondayLSR]

Been talking with a few companies trying to get a set made. No one but wiseco has a forging that small, and they require a few sets be made for custom orders. Only real option is going to be billet, which are pretty pricey ($1000-$2000)

I have spoken to arias, wiseco, diamond, and wossner. (The wossner rep used to work for je).

[scottly]

Several of the small Honda singles used 47mm pistons, such as the CT 70, and XR70s. Wiseco lists a piston for the 2001 XR 70 with 10.5:1 CR. It might be worth asking them for a blueprint of the piston to see if it might be used as an alternative. BTW, these pistons are not cheap: $104.38 each. There is also a ProX version, most likely cast, for $51.15 each.