IRC Components IRC Upshift Kit UPKIT_YAM for Yamaha IRC Components IRC Components UPKIT_YAM: upshift kit for Yamaha bikes, made in Italy. Yamaha MT 09 Yamaha MT 09 Tracer Yamaha V MAX 1200 Yamaha V MAX 1700 Yamaha XSR 900 Yamaha YZF R1 Yamaha YZF R6