Under drive pulleys

I am NA and I got mine at DC Performance. It's a crank pulley and slows down the accesories. I've had mine for three years and zero problems, love it.
 
our underdrive pulleys are $249 with the belt, hp wise, all differ, usually maybe 5hp, with some throttle response gained, its actually cheaper to get the entire set of pullies as a package tho
 
Yes it may show 5-7 hp on a dyno, but it's the reduced reciprocating mass on the crank that frees up power and lets the engine rev quicker. Likened to an aluminum flywheel or carbon fiber driveshaft or electric water pumps. Lighter wheels also fit this category.
 
Bought mine from Tony, havent installed it yet. Anyone have any tips on how to do it? Do i need to remove anything in order to install it? Beside the stock pulley.. :]
 
our underdrive pulleys are $249 with the belt, hp wise, all differ, usually maybe 5hp, with some throttle response gained, its actually cheaper to get the entire set of pullies as a package tho

His is a very nice , easy to install. The factory pulley was 6 inches , the jts pulley is 4 3/4 inches and comes with a new belt. Great value for the money.
 

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