The piston has grooves for Solid iron rings and typically there are a few grooves to accommodate the three piston rings. It's really a part on the ignition system on the engine and actually generates a spark that raises the ignition temperature from the mixture. There’s a sprocket on

The piston has grooves for cast iron rings and typically there are actually 3 grooves to support the a few piston rings. This model is offered in the Triumph Street Triple and with the CC of the potent inline-3 engine, features remarkable acceleration and agility. Kawasaki Ninja ZX 6R has the 636