Manitou | Mastodon Pro - Gen 3 - 120mm
Manitou | Mastodon Pro - Gen 3 - 120mm
Manitou | Mastodon Pro - Gen 3 - 120mm
Manitou | Mastodon Pro - Gen 3 - 120mm

Mastodon Pro - Gen 3

191-39998-A005

Regular price $949.99 Sale price$759.99 Save $190.00
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Description

The Mastodon is not a modified or repurposed trail fork compatible with large tire dimensions, but rather it is a fatbike fork made to improve any ride regardless of how low or high the numbers on the thermometer read. To create such a dynamic fork required all-environment and all-temperature performance testing that took the R+D staff to some of the most inhospitable testing environments in the world. To earn its place within the Manitou family, the Mastodon passed performance and reliability testing in both real world and lab scenarios at temperatures as low as -40 degrees. The Dorado Air, seals, lubricants, and all other internals are proven for all-weather performance, no matter how extreme on either end of the temperature spectrum.

Like all Pro level suspension, the Mastodon utilizes the Dorado air spring first debuted in our iconic Dorado model. The newest version of the mastodon incorporates the VTT6 damper for a simplified and more intuitive adjustment. The VTT6’s single knob adjusts both high and low speed characteristics. The resulting wide tuning range allows riders to easily find the perfect set up for any terrain.  These technologies, along with IVA volume adjustment that allows for fine tuning of the air spring curve that adapts to an extremely wide variety of conditions, riding styles and personal preferences.  

    • 106g of weight savings from the previous model with 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 our 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 can suite 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
    •Weight: 2104g
    •Offset: 44mm
    •Axle To Crown: 80mm travel - 504mm, 100mm travel - 524mm, 120mm travel - 544mm, 140mm travel - 564mm, 160mm travel - 584mm
    •Travel: 80-160mm internally adjustable in 10mm increments
    •Spring: Dorado Air w/ IVA
    •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)
    •Axle: 15mm x 150mm Hexlock SL
    •Max Tire: Size 26x5.05"/27.5x4.5"
    •E-pac: Yes

    Customer Reviews

    Based on 3 reviews
    67%
    (2)
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    33%
    (1)
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    J
    Jeff Wojak
    Forks for Fatties!!

    I've had my Salsa Fattie for three years now. Thought this year I'd upgrade the rigid fork that came with the bike with a Mastodon Gen 3. First impressions were really good, easy setup. Made me wonder why I waited so long! Highly recommend this fork.

    R
    Rarik
    King of the mountain

    In winter\fat riding culture this is the only fork you can ride. Everything else is magnitude behind lol. This is my 2nd year on high end suspension and discovering Manitou was like discovering well hidden secret. This thing is butter smooth even at -20 C ( coldest I took my bike out). It turned my fatty into hard chagrining hard tail. Some people will say it's overkill, winter rides are mellower - yeah, but it's nice to have this monster when conditions get rougher. It's a luxury item and comes with solid weigh penalty over carbon fork. But I converted my wheels into tubeless and basically only ended up adding 1.2 KG on my bike. A lot by roadie standards but I don't feel it.

    I am mostly impressed with Manitou tech. Adjustable travel at home with few tools but no extra parts is an awesome option, everyone should do it. Assembly quality is best I've seen, my fork was well lubed ( not too too much), with proper oil amounts, smooth out of the box, everything aligned and etc. Top notch QC and assembly ( this is important because 50% of my high end suspension products from big F and R came and went straight to warranty). I also appreciate detailed user manuals and graphic service manual. This thing is easy to work on for medium skilled home mechanic.

    When shopping next time I will def be considering other Manitou components first.

    J
    Jay
    Some improvements, but still needs a coil spring

    Casting improvements are nice, both the brake line attachment and the lowers, which are now more like Mezzer Pro. Better travel options. This fork really needs a coil spring though, with relatively radical temp changes, you have to frequently adjust it and in the winter with gloves on, you don't want to be pulling out a pump and especially not having to turn the bike upside down (because packed snow trails are narrow). It's not like other forks where you can just fill up and then "bleed down" to the right trail pressure, since the attachment is on the bottom. Another issue is warm (like inside) to cold means the negative spring will suck the fork down, so again you have to attach the pump because there's no negative spring equalization port. Lastly, the 2.8mm seal at the end of the spring stanchion will fail about 1x/season, also sucking the fork down. On my FS fatbike, the rear shock is a coil, it's always ready to go, doesn't care about conditions, etc. As a fatbike fork marketed for the cold, this really needs a coil spring.


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