RockShox SID Ultimate 29'' MTB Fork, 120mm Travel, 44 Offset, Boost 110, Remote

Detailed Specifications:

• Brand: RockShox

• Model: SID Ultimate C1

• Wheel Size: 29"

• Travel: 120mm

• Damper Type: Charger Race Day

• Damper Adjust: External rebound, 2-position remote compression (open/lock)

• Remote Compatibility: TwistLoc or OneLoc (10mm cable pull, sold separately)

• Spring Type: DebonAir air spring

• Fork Offset: 44mm (29")

• Axle Type: 15x110mm BOOST Maxle Stealth (included)

• Steerer Tube: 1.5" tapered aluminum

• Axle-to-Crown Length: 531mm

• Upper Tube Diameter: 35mm tapered wall aluminum

• Upper Tube Finish: Fast Black

• Lower Leg Material: Magnesium

• Crown Material: Forged, hollow aluminum

• Color: Diffusion Black

• Brake Mount: Disc only

• Maximum Rotor Size: 220mm

• Minimum Rotor Size: 180mm

• Max Tire Width: 66mm

• Max Tire Diameter: 758mm

• Fender Compatibility: Bolt-On Short (Use AC-FEN-SID-A2)

• System Weight Limit: 150kg / 331 lbs

• Maximum Air Pressure: 146 PSI

• E-Bike Approved: Yes

• Weight: 1537g (approx.)

• Model Year:
      
  2021
   

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Additional Features:

• Ultimate-level SID performance with lightweight 35mm stanchions for XC and marathon racing.

• Charger Race Day damper delivers precise low-friction control and lightweight tuning.

• DebonAir air spring provides small-bump sensitivity and consistent mid-stroke support.

• Maxle Stealth thru-axle offers a clean, low-profile appearance.

• Fast Black upper tubes reduce friction and improve small-bump compliance.

• Remote lockout compatible for bar-mounted control on technical climbs.

• E-bike approved, ensuring strength and reliability for higher system loads.

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Riding Impressions:

The RockShox SID Ultimate C1 Fork redefines cross-country performance with its Race Day damper and DebonAir spring combination. With its 120mm of plush travel, precise handling, and minimal weight, it strikes the perfect balance between efficiency and control for modern XC and marathon riders. Its Boost spacing and e-bike certification make it versatile for both racing and aggressive trail setups.

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Disclosure:

Includes fork and Maxle Stealth axle only.
Remote lockout, crown race, and fender sold separately.
Genuine RockShox SID Ultimate C1 fork. Non-retail packaged.
Covered under RockShox/SRAM manufacturer warranty.