Close-up of a mountain bike’s rear derailleur and chain, showcasing dirt and grime from use. The derailleur is mounted on the bike’s frame near a tree, with a blurred background of grass and blurred tree bark. We all smelled this day coming like a steamy pie in the SRAM kitchen window. They gave us a taste of stand-on-your-derailleur glory with the release of their new T-Type battery bits not long ago , and the mechanical goods were sure to follow . Enter the new Eagle 90 Transmission mechanical group, employing the same stompable UDH frame connection as the robot version, with a lower price and no stinkin’ batteries.
The brand’s new servo-operated drivetrains supplanted their podium models of XX, XO, and GX for fancy race rigs, and from what I can tell these fresh mechanical versions slot in roughly where the GX and NX model lines once were. So GX drivetrain lovers have a choice of cables or lithium, and everyone else will join the charge to recharge — or not.
In this review Installing the Eagle 90 Transmission drivetrain
Rebuildable and repairable
Pedal impressions on the trail
Eagle 90 Transmission specs, weights, and prices
Final thoughts Pros Cons Apart from swapping the battery with a tiny steel cable, the Eagle 90 gruppo we tested is notably similar to its electric cousins. It uses the same chain and cassette tech to keep shifting crisp under load, the direct-mount derailleur is wicked simple to install and […]
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