Just before the Cincinnati Show, I published some "spy" shop pictures of the new Rigid Chopper offered by Viper Motorcycle for 2008. Here the final simplified tech sheet of the bike the way you can order it. It uses a Daytec Goliath RSD 280-300 frame, an all billet short stroke 152 cu engine showing that it could be easily fitted into an after market frame with little, if any modifications. (the mounting bolt pattern on the engine is still based on Industry standards). Because of the positive response Viper has received on this engine, it will also be available to after market and OEM builders. But the exhausts, in different styles, will need to be sourced from Viper due to their proprietary exhaust ports., Retail price on the bike will start at $ 34,500. Not bad for an Airea 5150 paint job, RC Component rims, and a 152 cu inch all billet engine! Viper Motorcycle Company.