SRAM rockshox SID Ultimate 2P ULT MTB bike Fork for 29er rotor The ULTEGRA R8170 disc brake

The ULTEGRA R8170 disc brake caliper brings a new level of control to the road cycling world with enhanced modulation and a quicker initial braking point

This 2P damper features two-position compression adjustment: Open or a rock-solid Lock

But weight is meaningless without world-class performance and durability

Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12-speed FREEHUB bodies

The revolutionary Full Mount attachment method creates a far stronger connection because it grips both sides of the frame

SRAM rockshox SID Ultimate 2P ULT MTB bike Fork for 29er rotor The ULTEGRA R8170 disc brakeDESCRIPTION Climb mountains. Charge descents. SID Ultimate isnt like other XC forks. It is lighter than ever with a formidable 35mm chassis that holds the line when youre 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, SIDs latest DebonAir+ spring delivers sensationally smooth action at the top of the travel and full tunability for any rider or