We will provide the Gr.A as it is! Although the wire diameter is increased by 0.2 mm, the number of turns is the same as the genuine product. It does not become a resistance to engine rotation, the followability of the cam is dramatically improved, and you can experience a pleasant uplift without causing surging and vibration that are common in normal.
Inner diameter: 19.6mm / Wire diameter: 3.9mm
Material: NHK special steel
Item No: 13203-AAR00
38,000yen/set of 24peace