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Manitou Mastodon Comp Gen 3 Fork 26" / 27.5" 120mm

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Available in store

SKU: 191-40026-A005

The new Mastodon Comp Gen 3 fork is here - order Yours and enjoy the winter!


  • 120g of weight savings from the previous model with new crown, legs and internals
  • Expert air allows for internal travel adjustments with no added parts. New travel spacers account for negative air volume change, so the 80mm fork has the same initial stroke feel as the 140mm
  • Expert Air spring systems contain a unique balancing valve that equalizes the positive and negative air chambers during the air fill process. This gives the spring rate a consistent feel without any flat or dead spots in the stroke, along with giving riders of different weights the same initial stroke feel. Expert Air has identical performance to DoradoTM Air in a more cost effective package
  • Incremental Volume Adjust (IVA) modifies the volume in the positive air chamber with self contained spacers dictating the position of the IVA piston. This allows the main air spring ramp-up to be tuned to the rider weight, style, and conditions without the need for additional parts
  • Absolute Plus (ABS+) is a shim stack based damper that features external incremental Low Speed compression adjustment
  • New tune increases wheel traction, rider comfort, and control
  • New crown is 94g lighter, with increased knob clearance. 44mm offset to match modern fatbike geometry for precise handling and increased traction
  • Front brake routing allows the user to use the same length brake hose from their rigid fork, or other suspension fork. Updated casting with non threaded compression rod holes for ease of service. New arch ribs for increased casting stiffness
  • Tire diameter clearance is 2mm shorter that current EXT model, with a 6mm reduction of axle to crown


  • Wheel Size: 26" // 27.5" Fat
  • Travel: 120mm (80-140mm internally adjustable in 10mm increments)
  • Spring: Expert Air w/ IVA
  • Offset: 44mm
  • Axle: 15x150mm Hexlock SL
  • Axle To Crown: 80mm travel - 504mm // 100mm travel - 524mm // 120mm travel - 544mm // 140mm travel - 564mm
  • Weight: 2254g
  • Compression: ABS+
  • Rebound Damping: in-leg adjustable TPC
  • Adjustments: Air, Air Volume, Rebound, Compression
  • Steerer: 1.5" Tapered
  • Crown: Forged Aluminum, Hollow Bore
  • Leg Diameter: 34mm
  • Leg Material: 6000- Series Straight Wall Aluminum
  • Brake Post Mount: 180mm (203mm Max)
  • Max Tire: Size 26x5.05" // 27.5x4.5"
  • E-pac: Yes
  • Item #: 191-40026-A005

Need help setting your fork up?

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