Engine Cosmo racing underdrive pulley?

Cosmo racing underdrive pulley?

Does anyone have experience with Cosmo Racing's underdrive pulley?

http://cosmoracing.com/productinfo.asp?cid=202&pid=811

I'm mainly concerned about the quality and longevity of the product. The price is so much less than Unorthodox Racing's pulley ($55 versus $200) that I'm sceptical about whether it's really a worthwhile investment. I have no qualms about Unorthodox's quality.

Thanks guys.

never heard of them. I always live by the saying "u get what u pay for"

Some considerations would be the alloy used for making the pulley, and whether its anodized. Anodizing can improve surface durability quite a bit. See, these two points would directly impact the price of the product. The precision of it, though, is something that I think would be a given even with a "cheap" product. An imprecise product, especially a crank pulley, would probably run rough or chew up your belt in short order. I'm not sure someone like Cosmo Racing would sell such a product. Hence, I'm not so concerned about the tolerances and balance of it. But, maybe I'm assuming too much.

how could an underdrive pulley be poor quality?

The pulley needs to be perfectly balanced and made specific to the car or else it will cuz uneccesary vibrations which will cauze damage to the crank and rods.

I know that unorthodox pulleys is one of the good pulleys and provide gains of 5 to 12 HP and 4 to 8lbs.-ft. on normally aspirated engines,but i didnt hear anything about cosmoracing product if they are good and make alot of horsepower gains.

<a href="http://www.performancecenter.com" target="_blank">www.performancecenter.com</a>

you have to look at what n/a engines they are pulling hp claims from. you wont see a 12 hp jump in power off an under drive crank pulley on a corolla. im sure the pulley is safe and precise. it wasnt made by hand