Mechman Alternator Pulley 2.9"

Alternator Pulley for Mechman Alternators ONLY Keep your alternator alive, by slowing down its speed with this larger than factory diameter pulley.  Features: 2.9" diameter Compatible w/ Mechman alternators only Black anodized, billet aluminum Pulley Ratio Information: Calculate pulley ratio by dividing the diameter of your crankshaft pulley by the diameter of the alternator pulley. Example: A 7.48-inch crank pulley (Stock LS) with a 2.9-inch alternator pulley yields a 2.58:1 pulley ratio (7.48 ÷ 2.9 ≈ 2.58) This means the alternator will spin about 19,350 RPM at 7,500 engine RPM G Series alternators are rated to 18,000 RPM S and Elite Series alternators are rated to 20,000 RPM All ICT Billet Sold Mechman Alternators are Elite Series