Hey guys, wanted to drop the news of the STILLEN Underdrive Pulleys that we've released today (along with the Standard Pulley we've been shipping for months).
From the
STILLEN Product Page
Quote:
STILLEN has long manufactured precision pulleys for our supercharger kits. We have used this expertise to produce a new line of high performance crank and accessory pulleys.
Each pulley is machined from 6061 aerospace grade billet aluminum with a bold new design to maximize performance, strength and minimum weight. 304 stainless steel sleeves are used for main seal contact points for durability. Stock timing marks are maintained and keyways are precision broached. All pulleys are CNC turned, milled and balanced based on computer generated designs.
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Underdrive is approximately 20%, not enough to effect your charging system or A/C (unless you have a MONSTER audio system.. it would need to be BIG.. then you should consider the lightweight standard pulley). Underdrive pulley does require a shorter belt, which we have in stock as well (top quality Gates).
Standard pulleys for those who don't want to underdrive the accessories, and for those planning to go the supercharger route (as you wouldn't want to underdrive the supercharger, which is also run off the crank). Standard pulley doesn't require a specific belt, but if you're already in there with the belt off, you should consider just replacing it with a quality Gates belt. Up to you.
Good news is we put the pulleys on special this month, and are including the new underdrive pulley with it. Crazy cheap pricing!
STILLEN : STILLEN Performance Lightweight Pulleys