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Today’s Deals2025 YT Industries
Jeffsy 29 UNCAGED 14
A 29″ carbon frame full suspension trail bike with high-end components.
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Manufacturer Price
$4,999| Weight | 33.3 lbs |
|---|---|
| Frame | Carbon |
| Suspension | Full, 145 / 150mm |
| Fork | Öhlins RXF36 |
| Shock | Öhlins |
| Wheels | 29″ Aluminum |
| Groupset | XT |
| Brakes | Hayes Dominion A4 Hydraulic Disc |
| Seatpost | Dropper |
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full Jeffsy model range
View Comparison5'0" – 5'6"
5'3" – 5'10"
5'7" – 6'1"
5'11" – 6'5"
6'2" – 6'8"
None yet.
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Summary
The YT Industries Jeffsy is a versatile mountain bike that excels in agility and suspension performance, offering a fun and reliable ride across various terrains. It stands out for its value, with high-quality specs and thoughtful frame details, though some may find its weight and component choices limiting. The bike's geometry and suspension are praised for their balance and capability in both climbing and descending.
Super fun to ride
Excellent suspension
Highly agile
Most affordable bike in the test
Exceptionally quiet ride
Spec could be improved
Heavier than some competitors
Shorter dropper post limits freedom of movement
The YT JEFFSY is the only bike in this test that has already proven itself in a previous comparison.
Enduro Mountainbike MagazineDespite the top-tier spec, the JEFFSY CORE 5 remains the most affordable bike in this test.
Enduro Mountainbike MagazineThe Jeffsy feels like the triumphant return of the real-value trail bike.
Mountain Bike ActionFeedback?
View all reviews
Apr 2025 · Ron Koch
Whether you’re a novice looking for a starter bike packed with value or a seasoned pro looking for a well-rounded, ride-most-anything machine, the Core 2 ticks all the boxes. With a sale price that’s less than $3k, it feels like an incredible deal that won’t last forever, too.
Feb 2025
Calling these bikes “all-new” might be a stretch, but there's no denying the incredible value and versatility.
Sep 2024
The YT Jeffsy Core 4 has excelled at being an all-round “grab and go” bike, regardless of what gets thrown in its way. Check out our review.
Aug 2024 · Cory Benson
YT’s newest limited edition Uncaged 14 build decks out their latest Jeffsy carbon trail bike with a killer paint job, a drool-worthy build, the first…
Aug 2024 · YT Industries
Its 145mm of rear travel utilizes the World Cup-winning V4L linkage, and with five sizes available, complete with size-specific chainstay lengths (437mm for S-L / 442mm for XL-XXL), there is an Uncaged 14 for all riders.
Mar 2024 · Ben Haworth
The YT Jeffsy Core 4 is a bike that arrives in a box that is not quite perfect out of the box. BUT... there is loads of potential here.
Aug 2022
The YT Jeffsy 29 Core 3 is a very capable all-mountain bike which can handle the rough stuff but is equally at home on flow trails and jumps. While the specification list is solid for the money, it's worth paying extra attention to frame sizing and geometry to get the ride you want. With a longer dropper and some tougher tyres this bike has what it takes to be a real challenger when it comes to the best mountain bikes.
Aug 2022 · Richard Owen
Like Robocop or the Six Million Dollar Man, YT have rebuilt the Jeffsy with top notch tech to be (even) better than it was before
Superbly capable
Wants to blast every trail
Packed with top tech
Instant freehub engagement
App driven suspension setup
A hefty investment
Slightly conservative geometry
| Fork | ÖHLINS RXF36 M.2 AIR Travel: 150mm Spring Type: Air |
|---|---|
| Shock | ÖHLINS TTX2 AIR Travel: 145mm |
| Bottom Bracket | SRAM DUB Pressfit |
| Headset | CANE CREEK SERIES 40 |
| Stem | TITLE ST1 |
| Handlebar | TITLE AH1 |
| Saddle | SDG BEL AIR 3.0 |
| Seatpost | YT POSTMAN V2 Type: Dropper |
| Grips | ODI ELITE MOTION V2.1 |
| Rear Derailleur | SHIMANO XT RD-M8100 |
|---|---|
| Crank | 5DEV R-SPEC TRAIL ENDURO |
| Shifters | SHIMANO XT SL-M8100 |
| Cassette | SHIMANO XT CS-M8100 |
| Brakes | PURPLE HAYES DOMINION A4 Type: Hayes Dominion A4 Hydraulic Disc |
| Rims | CUSTOM CRANKBROTHERS SYNTHESIS ENDURO ALLOY I9 1/1 |
|---|---|
| Tires | FRONT: MAXXIS DHF I REAR: MAXXIS MINION DHR II |
First added February 25
Last updated May 24
Not listed for 384 days