Nope. Its a ring. Its a Peak Racing / Team Orion Diablo.

I always thought nicasil plated was better. Here is what I have read. The motor is nicasil not nickel plated.

Most nitro rc engines are of the "ABC" type design. The ABC stands for ALUMINUM BRASS CHROME. This means that the piston is aluminum, the cylinder liner is brass, and the internal wear surface of the cylinder is plated with chrome. This hard chrome plating offers a much better wear surface than the soft brass underneath, and helps to prolong engine life. Sometimes, you will see an ABN engine. Usually the N stands for NICKEL plating in the cylinder liner which is cheaper and less durable. However, occasionally expensive, high end rc nitro engines will have an "ABN" design where the N stands for NICASIL plated cylinder sleeve. This is a premium plating found on only a very few very expensive engines because it offers even better wear resistance than chrome in nitro rc engines. This nicasil plating comes at additional expense. By far, the majority of good rc nitro engines utilize ABC technology with excellent results and long life potential.