Manitou Mastodon Pro Gen 3 Fork 26" / 27.5" - The Inside Line Mountain Bike Service Ltd.

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

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Available in store

SKU: 191-39998-A005

The new Mastodon Pro Gen 3 fork is here - Order Yours and enjoy the winter!


  • 106g of weight savings from the previous model with a new crown, legs, and internals
  • DoradoTM 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 160mm
  • 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. Dorado Air is Manitou's lightest weight air spring technology
  • 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
  • A single external compression adjuster that simultaneously adjusts HS and LS damping characteristics. It features a fixed shim stack and a secondary shim stack that is preloaded by the external adjuster. The resulting wide tuning range combines the benefits of a Low-speed platform and High-speed progressive tune that can suit any terrain
  • New crown is 84g 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. 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. 796mm satisfies every fatbike tire on the market!


  • Wheel Size: 26" // 27.5" Fat
  • Travel: 120mm (80-160mm internally adjustable in 10mm increments)
  • Spring: Dorado Air w/ IVA
  • Offset: 44mm
  • Axle: 15x150mm Hexlock SL
  • Axle To Crown: 80mm travel - 504mm // 100mm travel - 524mm // 120mm travel - 544mm // 140mm travel - 564mm // 160mm travel - 584mm
  • Weight: 2104g
  • Compression: VTT-6p
  • Rebound Damping: Half Cartridge Adjustable TPC
  • Adjustments: Air, Air Volume, Rebound, Compression
  • Steerer: 1.5" Tapered
  • Crown: Forged Aluminum, Hollow Bore
  • Leg Diameter: 34mm
  • Leg Material: 7000-Series Butted Wall Aluminum
  • Brake Post Mount: 180mm (203mm Max)
  • Max Tire: 26x5.05" // 27.5x4.5"
  • E-pac: Yes
  • Item #: 191-39998-A005

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