@motionraceworks: Keep your alternator alive at high RPM! Factory and even aftermarket alternators aren’t always designed to handle the demands of high RPM applications. Motion Raceworks Alternator Pulleys help keep your alternator RPM in check so you can protect your charging system when the radiator RPMs rise. Available in 3” and 3.5” size, each pulley includes shims for adjustment to dial in your setup. Be sure to reference our RPM chart to find the right pulley for you!

user74791540596511 :

at low rpm, this wont charge!! I had a similar setup on my factory alternator, and I destroyed 2 batteries due to undercharge...

T-rebel :

And now i need a longer belt.

Jay :

I need a smaller pulley

one.blue.duramax :

is this almost like a bigger gear for an alternator in a sense ?

robert :

why?

👑 :

Could I put it if I have a stock 5.3?

CHRIS madison :

how much does this cost for a 6.2 ls engine

Ranier🪿 :

Wish yall made Alternator Decoupler pulleys

hk :

why

Lifewithaust💫 :

If I have a bigger cam would this help?

Hussein murtada :