+3 Mechanical Speed Switch - SA-0503-A - Synchro-Start SA-0503-A $773.92 In stock Quantity: 1 Add to Bag Product Details Brand: Synchro Start Speed Switch Cross Over Part No.: SWITCH-GOM OVERSPEED SW STD .152 The Dyna SA-0503-A is an exact OEM (Formerly Synchro-Start) replacement now manufactured by QCC. SWITCH-GOM OVERSPEED SW STD . GOM model with diameter .152 drive shaft Overspeed switch Switch trip setting SW1 = 2290-2310 RPM 10 amps switch contacts Field adjustable Save this product for later Favorite