PRODUCT DESCRIPTION: ALTERNATOR TYPE: NIKKO VOLTAGE: 24 AMPS: 35 FAN: EXTERNAL REGULATOR: INNER GROOVES: 2 PULLEY TYPE: SOLID PULLEY OD DIAMETER: 3.228″ / 82MM MOUNT TYPE: J180 EYE 1 HOLE: M121.5 THREADED EYE 2 HOLE: 13MM UNTHREADED EYE 3 HOLE: 13MM UNTHREADED EYE 1 THICKNESS: 0.63″ / 16MM MOUNTING EYE 2 THICKNESS: 0.63″ / 16MM MOUNTING EYE 3 THICKNESS: 0.787″ / 20MM B+ TERMINAL: M50.8 R TERMINAL: M50.8 POLARITY: NEGATIVE SPECIFICATIONS: B+ AT 1100 SPECIFICATIONS: R AT 300 SPECIFICATIONS: BRUSHLESS SPECIFICATIONS: SELF-EXCITED WEIGHT: 19.4 LBS / 8.82 KG