This 12V-80A starter relay is compatible with Boulevard GP1, GPR, Euro 2, and models including 50cc, 125cc, 150cc, and 200cc variants.It fits vehicles with model codes VTHAL1A1A and replaces part numbers 58115R and 584521.Compatible with Senda HYP 2T DRD Evo Limited Edition Euro 2 (2008, 50cc), Senda R 2T (2013, 50cc), Senda R 2T DRD (2009, 50cc), Senda R 2T DRD Pro (2005–2008, 50cc), Senda R 4T AC (ESP/FRA/GBR, 2004–2007, 125cc), Senda R 4T DRD Racing (2009, 125cc), Senda R 4T AC (2005–2006, 125cc), Senda SM 2T DRD Pro Euro 2 (BEL/NLD/FRA/ESP/AUT/LUX/GBR, 2005–2011, 50cc), Senda SM 4T 4V DRD Racing (2009, 125cc), Senda SM 4T AC (2004–2007, 125cc), and Senda SM 4T AC Euro 2 (2004–2007, 125cc).This relay is designed for direct replacement to restore starter system functionality.Professional installation is required.