1973 Penton Six-Day 125 This is a Concours Restoration, and the restoration is absolutely flawless. Original factory Sachs engines typically have a somewhat rough cast alloy finish and a duller color (natural dark gray magnesium/aluminum). On original bikes, casting marks are often visible, which are not as smooth. This gives the bike a very neat and clean look, typical of modern American restorations, although it does somewhat remove the "industrial" feel of '70s race bikes. Penton Six-Days wer

The Number! Funny and educative episode from Penton Comedy. | Liberty Media