Show the world that you are a Motor Head by accessorizing your body like you do for your ride! Yes, these are Piston Rings manufactured from 316 Stainless Steel and CNC machined in house by a company called BikeDesignz.
The underside of the ring is comfort notched which holds the piston design in place. Men’s and Women’s sizes are available and you custom logo can be added even if you don’t build motors. Other jewelry available at BikeDesingz.
http://www.cyrilhuzeblog.com/2009/02/17/motor-hands-of-a-motor-head/