The SPX series high-output alternators are the ultimate
upgrade when you need the absolute biggest and most
sophisticated high output alternator on the planet. All of
our SPX series alternators are designed for one purpose,
brute force idle output. When you need the most extreme
idle output with the most sophisticated integrated
alternator-monitoring system to prevent thermal failures
is where the SPX alternator delivers. Every product we
sell is held to the strictest quality standards in the
industry. We only use 100% brand new USA made
components along with one of the most rigorous testing
before each individual alternator leaves our shop. Each
SPX series alternator comes standard with our custom
hard-anodized billet aluminum pulley and 2-year
replacement warranty. If you're looking for a significant
overall increase in top end and idle output, the SPX
series alternator is your solution.

CNC Bilet Housing
12 75 Amp Diodes
High Efficiency Stator
High Flux Rotor
Standard Two Year Warranty
FREE SHIPPING on all SPX Alternators

300 Amp - 209 Amp at Idle
260 Amp - 192 Amp at Idle
220 Amp - 153 Amp at Idle