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M4 Aluminum frame is stiff and lightweight.
Adjustable dropouts let you adjust chainstay length and/or run the bike either geared or single-speed.
SRAM NX Eagle 12-speed drivetrain offers maximum gear range (11-50t cassette) in a simple and bulletproof package.
Long-travel TranzX dropper posts (150mm drop on L/XL models) let you tackle steep descents without your saddle tickling your esophagus.
Burly RockShox 35 Gold fork with 35mm stanchions boasts 130mm of smooth travel.
Stout Trail SL 29 wheels with Boost™ 110/148 thru-axle hubs.

The New Fuse Is Here… and It’s Rowdy
A new version of the Fuse rolls into shops this June 2019 and it is a changed bike. The Fuse is now less of an adventure rig and more of a thrill seeker. Bottom line, this is a bike that appeals to hard-charging trail riders who want a Stumpjumper in simpler hardtail clothing.

The Geo is More Aggressive
We went “long, low, and slack” on the frame geometry.

We made the reach longer, slackened the head angle, steepened the seat angle, and lowered standover by as much as 52 millimeters. While we were at it, we increased seatpost insertion depth, so that the Fuse plays nice with longer-travel dropper posts. And finally, we designed chainstay-length adjustability into the M4 Fuse frames, which means riders can tune the handling to their riding style.


The long reach gives you even weight distribution, the slack head angle lends confidence on steep and sketchy descents, and the steep seat angle makes quick(er) work of cleaning steep climbs. The Fuse is dialed.

It’s Built to Shred
The Fuse’s component spec has also gotten more aggressive. For starters, we bumped up the suspension fork travel to 130 millimeters and are spec’ing all Fuse models with reduced-offset forks. Wider (780mm) bars and shorter (45mm) stems get the nod on all the bikes. All of the models now sport 1X drivetrains.

It Comes in Both 29er and 27.5+ Models
Two out of the three Fuse models (the Expert 29 and Comp 29) are now equipped with 29x2.6” tires, That said all of the new Fuse frames are compatible with both 29er and 27.5+ wheels, so riders can swap wheel sizes if they get the itch.

Going 29er gives you nimble and precise handling. Opting for the plus-size version, on the other hand, gets you tons of traction and a calm, planted feel over rocks and roots.

And It’s Packed with Smart Details
The Fuse is now an all-aluminum affair. The Expert 29 and Comp 29 frames are made of M4 Aluminum, while the base-level Fuse 27.5 is constructed from our A1-grade of aluminum.

The M4 Aluminum frames feature adjustable dropouts, which allow riders to not only adjust their chainstay length, but also run their Fuse either geared or single-speed.

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