1Pcs 4 Pin Relay Starter Solenoid compatible with YFM350, YFZ450, and ATV models including CE50, Champ 100 YFM100, 80 YFM80GT, 80 Hunter YFM80, 125 YFM125G, 125 Hunter Edition YFM125GH, 350 YFM350G, YFM350FG, YFM350FGH, 450 YFM450FG, YFM450FGH, 600 YFM600FWA, YFM600F, YFM600FH, Warrior 350 YFM350, 350 YFM350, 450 YFM450FGSE, YFZ450, Badger 80 YFM80, Bear 250 YFM250X, Bruin 250 YFM250, Bruin 350 YFM350BA, YFM350FA, FM350FAH, Big Bear 250 YFM250, Big Bear 350 YFM350FW, YFM350U, Big Bear 400 YFM400, YFM400F, YFM400FH, YFM400FB, YFM400FBH, Breeze 125 YFA1, LT-Z50, LTZ50, LT-Z50Z, LT80, KSF80, KFX80, and other 50cc, 90cc, and 350cc ATVs.This solenoid is a direct replacement for RA-69-4 starter relay units.