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Description
Mastodon is the real-world trail suspension for fatbikes. This fatbike fork delivers all-temperature performance, working equally well in winter or summer, soaking up chatter and big hits. Extended ride height versions fit up to 26×5.15” / 27.5×4.5” tires. Standard ride height versions fit up to 26×4” / 27.5×3.8” tires on the snow, or taking on shimmering hot sand like a pro. All-temperature performance born of frigid winter ride-testing. 34mm trail chassis is stiffer and steers more precisely than any other fatbike suspension fork.
•100mm and 120mm forks are both internally adjustable in 10mm increments from 100-140mm of travel.
•Dorado Air Spring
•MC2 Compression Damping
•TPC Rebound Damping
•26", 27.5"
•Wheel Size: 26/27.5"
•Weight: 2152g (Standard) 2172g (Extended)
•Offset: 51mm
•Ride Height: 511-561mm (Standard) 531-571mm (Extended)
•Travel: 100-150mm internally adjustable in 10mm increments (Standard) 100-140mm (Extended)
•Spring: Dorado Air w/ IVA
•Compression Damping: MC2
•Rebound Damping: Half Cartridge Adjustable TPC
•Adjustments: Air, Air Volume, Rebound, LS and HS compression
•Steerer: 1.5" Tapered
•Crown: Forged Aluminum, Deep Bore Hollow
•Leg Diameter: 34mm
•Leg Material: 7000 - Series Butted Aluminum
•Brake Post Mount: 180mm (203mm Max)
•Axle :15mmx 150mm Hexlock SL
•Max Tire Size: 26x4" / 27.5x3.8" (Standard)26x5.15" / 27.5x4.5" (Extended)
•E-Pac: Yes
Have a quietkat fat bike - full suspension ebike. Came with an inverted fork that didn’t last long. This has been a great upgrade. Feels stronger and absorbs hits great. Very satisfied with my purchase.
I have two Mastodon forks. A first generation—2017–model and a 2021–22 model. Both forks deliver excellent performance. The latest version offers subtle but meaningful improvements including, a lower profile compression knob allowing for better down tube clearance on more frames.
I HIGHLY recommend purchasing the Infinite rate tune kit (IRT) to replace the Incremental volume adjust (IVA), which comes standard on the fork. For the newer versions of the fork, **Be sure** to get the IRT that is installed using a cassette Lockring tool rather than a socket.
The well refined chassis is what sets this fork above others designed for fat tires. Excellent fit and finish, easy wheel installation, straight forward setup and operation, and outstanding customization—especially with the IRT. The functionality of this fork with its ability to either be set up in a way that you almost forget it’s there, because it’s just doing the work of absorbing the bumps. Or, tuned to feel a very specific way that suits a particular style of riding, offers an improvement to any fat bike that cannot be overstated.
Had a Wren, and it was a noodle compared to the Mastadon. The Mastadon is stiff as hell and much easier to tune.
Don't think just buy! Well worth the money!
Far exceed the RS Bluto on performance and stiffness.
I have it on both my fatties and increased travel to 140mm on both. It's turned both of my fatties into year round bikes.
Both are the EXT Pro models it's the only way to go. Now I see Manitou makes it on 150mm, I'll definitely get or 2 in that travel.
Just upgraded my Bluto to this fork, I live in New England and this fork is amazing, currently have only ridden in the snow, but cannot wait for dirt. - I cannot even believe the difference. I put the fork on a Foes Mutz.