Frameset
Frame
Ultra Modulus Carbon frame
Decoy SN 29 Core 2 CF
The YT Decoy SN is the brand’s lightweight-assist e-mountain platform, built around a carbon frame and Fazua’s Ride 60 drive system rather than the larger motors and batteries used on full-power e-bikes. In its original 2024 form, the Decoy SN MX was positioned as the more aggressive version of the concept: a mixed-wheel bike with 170 mm of front travel and 160 mm at the rear, aimed at riders who want enduro-bike intent with a lighter, lower-assistance package. Key frame details include side-entry headtube cable routing with clamped ports, a flip chip for setup adjustment, and a Post Mount 200 brake standard that signals the bike’s descending focus.
Price TBD
Image pending
Build
Full specs
Groupset
Front brake
Hayes Dominion A4
Rear brake
Hayes Dominion A4
Wheelset
Front wheel
DT-Swiss (model not specified)
Rear wheel
DT-Swiss (model not specified)
Builds
The Decoy SN range spans both the original 170 MX lineup and the later Decoy SN 29 models, with builds listed from Core 1 CF through Core 4 CF on the 29 platform, and Core 2 through Core 4 on the 170 MX side. That structure suggests YT is covering both entry and premium spec levels across the two intended use cases: the MX bikes for riders prioritizing steeper-terrain capability and the 29 models for those looking for a slightly less aggressive, more all-round interpretation of the same lightweight eMTB idea.
Within the platform, the most meaningful spec split is not just component level but bike format. The 170 MX models pair the carbon Fazua chassis with a mullet wheel setup and 170/160 mm travel, while the Decoy SN 29 shifts to dual 29-inch wheels, 160/140 mm travel, and the newer 480 Wh Fazua battery. Without detailed component lists or prices, it is not possible to rank individual builds on value, but the lineup clearly separates buyers by both budget and riding style rather than offering only cosmetic spec changes.