Stator Regulator Rectifier Gasket Set For Yamaha R1 5PW-81410-00 5PW-81410-01. 57mm Cylinder Piston Gasket Big Bore Kit 150cc For Yamaha YZF-R 125, MT 125, WR 125, VP 125 X-CITY, YP 125 X-MAX. The cylinder kit 150cc ALU help to noticeably better pull from the lower speed ranges.
