Ironman Rear Sprocket If you shred aluminum sprockets, we have the solution! What makes our sprockets so superior to anything sold? For starters, our one-year guarantee. No other sprocket manufacturer will replace your sprocket if it wears out within a year. Dirt Tricks will. No questions asked. The "Sidewinder guarantee" only applies to the rivets of their "new Generation V". They won't replace a worn sprocket. Dirt Tricks Sprockets are made of heat treated, nickel/chrome plated, chrome-molly steel that is 2.5 times stronger than stainless steel; 3 times stronger than 7075 aluminum. A Dirt Tricks sprocket typically weighs 18 ounces versus 14 ounces for the same name-branded 7075 aluminum. That's a 4 ounce difference. Now compare that to an average of 30 to 40 ounces for a typical stainless steel or "Ti-Moly" sprocket and 25 to 30 ounces for a "Generation V". When you combine our one-year guarantee with our light-weight design and a great price, there is no better choice than a high quality, US-made Dirt Tricks Sprocket. What kind of life can you expect from an Ironman Sprocket? The following is very typical