Climb mountains. Charge descents. SID Ultimate isn't like other XC forks. It is lighter than ever with a formidable 35mm chassis that holds the line when you're on the edge. The new Race Day 2 damper offers reliably rock-solid Lock and plush Open compression positions. With more positive and negative air volume, SID's latest DebonAir spring delivers sensationally smooth action at the top of the travel and full tunability for any rider or race.