Thank your lucky stars that the Trail 4 you're on is a sweet bike from Cannondale! The lightweight aluminum frame is undiscerning when it comes to surfaces, shredding path, pavement, and trail with abandon. The RockShox fork supplies 100mm of suspension to nullify the bumps, and create a smooth, comfortable ride. 27.5-inch aluminum Alex rims are smooth rolling no matter where your ride takes you, and rugged tires from WTB are durable enough to flow the dirt to your heart's content. The handlebars, stem, and saddle are of Cannondale's own making, so you can be sure that comfort and function will come second to none. If it's fast fun that you're looking for, look no further than the Trail 5.