RARE NOS genuine factory Triumph piston set to fit 3T 350 Twin models in original boxes. Part# 70-6908 .020 oversize. Complete with original rings, wristpins and circlips. Very hard to find NOS pistons nowadays. Why go with unknown quality piston and rings when you can have the original. Came out of old dealer I bought out in early 1980's. I have loads of NOS pistons in stock.