Unorthodox Racing brings the first of their kind in the sport compact aftermarket with their most popular pulley sets. These sets increase performance by reducing the engines spinning weight and also because they underdrive all the accessories (a/c, alternator, p/s & w/p). In most applications all of our underdriving is done with the crank pulley, not the accessory pulleys. We are very careful not to overdue the amount of underdrive for two main reasons. First, it is important to keep the alternator, air conditioning, power steering, and water pumps moving fast enough for every day driving. Second, not much horsepower is gained from extreme underdriving. We always keep our underdrive percentage under 20% allowing us to maintain factory specified outputs for the accessories. This care in design allows you to upgrade your stereo to a system of up to 600 watts (RMS) and not have any charging problems. The underdriving is done at the crank pulley, not the accessory pulleys. We do this to maximize the weight loss at the crank where most of the horsepower gains are realized. The underdrive version gives you 10-15% more power than the stock diameter version. So when you want the best pulley sets donÌÎÌ_ÌÎ_ÌÎå«ÌÎÌ¦ÌÎÌ_Ì´åÇÌÎå«Ì´åt settle go with ÌÎÌ_ÌÎ_ÌÎå«ÌÎÌ¦ÌÎÌ_Ì´åÇÌÎå«Ì´å±THE ORIGINAL". These sets are available only in polished finish.
This crank pulley adds 6-10 HP to the Scion xB and is 80% lighter than the stock unit.
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