Enhance your compatible Trek mountain bike's performance with these angle - adjust cups. They allow you to adjust the head tube angle by one degree, either slacker or steeper. First, pick the right - sized short upper cup according to your frame size. Then, add the universal lower cup. For Fuel EX Gen6 and Fuel EXe Alloy, the short upper cup fits XS - L frames, while the tall upper cup is for XL - XXL. For Slash Gen6, the short upper cup works for S - ML frames, and the tall one for L & XL.
Using these angle - adjust cups is easy. First, figure out your bike frame size. For Fuel EX Gen6 and Fuel EXe Alloy, if your frame is XS - L, go for the short upper cup; for XL - XXL, use the tall upper one. For Slash Gen6, S - ML frames need the short upper cup, and L & XL frames require the tall one. After choosing the correct upper cup, add the universal lower cup. When installing, make sure everything is properly tightened to avoid any looseness during rides. As for maintenance, regularly check the cups for any signs of wear and tear. If you notice any damage, replace them right away. Keep the cups clean by wiping them down after each ride, especially if you've been riding in muddy or wet conditions.
