First Look | The 2024 YT Jeffsy gets updated frame with STASH downtube storage

2024 yt jeffsy core
Sitting between the Izzo and Capra, the YT Jeffsy is designed to be a versatile ride-anywhere kinda bike.
2024 yt jeffsy core
The YT Jeffsy is updated for 2024 with a new frame that features changes to the geometry and suspension kinematics.

An overview of the 2024 YT Jeffsy

The YT Jeffsy sits in between the Izzo (the 130mm travel lightweight trail bike), and the Capra (the 170mm travel enduro bike). Splitting the difference, the Jeffsy aims to be a versatile all-rounder. It’s equipped with a 150mm travel fork, 145mm of rear travel and 29in wheels, putting it into direct competition with fellow All Mountain bikes such as the Trek Fuel EX, Focus JAM and Specialized Stumpjumper EVO.

For 2024 the Jeffsy has received an all-new frame that’s available in carbon and alloy variants. Both utilise an updated V4L suspension design that boasts improved pedalling performance and big-hit support compared to the previous model.

2024 yt jeffsy core
The chainstays are 5mm longer than the previous model and are generously wrapped with armour to quieten down chain noise.

The big news with the carbon frame is the arrival of the integrated STASH downtube storage. Unlike Trek and Specialized, YT has positioned the entry hatch separately to the bottle cage with the aim of minimising vibration and noise. The hatch features a double-sealed lip to prevent water ingress into the frame, and a soft neoprene pouch is included for housing tools and spares.

The Jeffsy frame also features bolt-on downtube protection, a top tube accessory mount, and clearance under the shock to fit YT’s own 620ml Thirstmaster bottle and side-entry cage.

2024 yt jeffsy core
A small hatch above the bottle cage provides you access to the downtube storage.

Geometry & sizing

The geometry has also received a massage on the 2024 YT Jeffsy, with the head angle slackening out by a full degree to 65°. It also features size-specific seat angles, that get steeper as you go up the size range in order to prevent taller riders from feeling like they’re right over the back wheel.

As with the previous model, the new Jeffsy features a two-position flip chip in the lower shock mount. Flipping this into the High position will lift the BB height by 8mm and steepen the angles by 0.6°.

Compared to the old frame the reach is 5mm longer, and so too are the chainstays. Combined with the slacker head angle, the overall wheelbase has grown by quite a bit. On a Large frame size for example, the wheelbase is 20mm longer on the new Jeffsy.

YT Jeffsy Size Chart
2024 yt jeffsy core
There’s a two-position flip chip for altering the BB height and angles to your preference and terrain.

YT Jeffsy price & specs

There are five models in the 2024 YT Jeffsy lineup, two of which use an alloy frame and three of which use carbon frames.

All models come with a Fox 36 or RockShox Lyrik up front, 4-piston brakes and 200mm rotors, a YT Postman V2 dropper post and Maxxis Minion tyres with EXO+ casings.

We’re still waiting to confirm Aussie pricing and availability, and will update this article once as soon as we get the relevant info. In the meantime, read on for the detailed specs for the 2024 YT Jeffsy model lineup.

2024 yt jeffsy core 5
The top-end YT Jeffsy Core 5 gets a SRAM X0 Transmission and Fox Factory Series suspension.

2024 YT Jeffsy Core 5

2024 yt jeffsy core 4
The YT Jeffsy Core 4 steps down to a SRAM GX Transmission, but still comes with top-level Ultimate suspension from RockShox.

2024 YT Jeffsy Core 4

2024 yt jeffsy core 3
The YT Jeffsy Core 3 is the cheapest carbon model in the lineup.

2024 YT Jeffsy Core 3

2024 yt jeffsy core 2
Prefer alloy? The YT Jeffsy Core 2 specs Fox Performance Series suspension and a SRAM GX Eagle drivetrain for a solid-looking setup.

2024 YT Jeffsy Core 2

2024 yt jeffsy core 1
The cheapest model in the lineup is the entry-level YT Jeffsy Core 1.

2024 YT Jeffsy Core 1

2024 yt jeffsy core
We are really liking the look of the YT Jeffsy, almost as much as we like the look of those mountains!

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