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.