Powerlite starter motors are lightweight and high performance designed to be a direct replacement for the original unit. These very clever units increase the cranking power and yet have a lower current draw than the original add to that with them being almost half the weight it is a win win. Direct replacement for original unit when fitted with the BOLT ON RING GEAR. Fitted with captive stud to aid fitting. FITS Triumph TR3, TR4 & TR4A SPECIFICATION Kilowatts 1.00 kW Teeth 10 Voltage 12 V Weight 4.10 kg