Schwinn Stingrays rule. A regular bike fanatic. I love mountain bikes as well. I own a 2010 Specialized Stump Jumper in red with black trim. I own my own bicycle accessory business, called Ziggyboy Bullet. "ZiggyboyBullet.com" Home of the one and only Ziggyboy Bullet Z-VSC Valve Stem Cover for bicycles, a revolutionary valve stem cover that completely covers, protects and beautifies the entire inner-tube valve stem from top to bottom. No other valve stem cap in the world does what the Ziggyboy Bullet Z-VSC does.