Proflow 80mm billet aluminium alternator pulley is a good mid range diameter pulley for a street driven high rpm engine. This still considered larger for high RPM engines. (most std pullys are around 50mm). If you want to further protect you alternator from overrun , you may consider using our PFEP8868 which is bigger again.

Example: if you are turning 7000rpm and have a 6 inch crank pulley with a 2 inch alternator pulley, your alternator is doing 21,000 rpm!

More From This Category

Proflow Pulley, V-Belt Water Pump SB Chev Short Water Pump 2-Groove, Polished Aluminium

Proflow Pulley, V-Belt Water Pump SB Chev Short Water Pump 2-Groove, Polished Aluminium

$131.31

Proflow V Belt Drive & Alternator Bracket Kit, Aluminium For Holden V8 Passengers Side Mid Mount V8, Silver

Proflow V Belt Drive & Alternator Bracket Kit, Aluminium For Holden V8 Passengers Side Mid Mount V8, Silver

$329.65

Proflow Use Part No GK80256BK

Proflow Use Part No GK80256BK

$342.88

Proflow Front Drive Kit, V Belt Kit, Chrome V Belt SB Chev Long Style Pump

Proflow Front Drive Kit, V Belt Kit, Chrome V Belt SB Chev Long Style Pump

$1,176.18