Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices
Today’s Deals2023 YT Industries
Jeffsy UNCAGED 8 29
A 29″ carbon frame full suspension enduro bike with high-end components.
Compare the full range
Manufacturer Price
$5,499| Weight | 32.0 lbs |
|---|---|
| Frame | Carbon |
| Suspension | Full, 150 / 150mm |
| Fork | Cane Creek HELM |
| Shock | Cane Creek DB Kitsuma Air |
| Wheels | 29″ Aluminum |
| Drivetrain | 1 × 12 Electronic |
| Groupset | GX Eagle AXS |
| Brakes | SRAM G2 RSC 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"
5'4" – 5'10"
5'8" – 6'1"
5'11" – 6'5"
6'3" – 6'8"
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
Summary
The YT Industries Jeffsy is a highly capable and versatile enduro bike, praised for its gravity-hungry nature, fast and confident riding, and exceptional value. It excels in both climbing and descending, with a suspension system that offers great traction and support. The bike is often compared to top models like the Santa Cruz Hightower and Canyon Spectral, standing out for its playful yet stable handling.
Incredibly capable and fun
Exceptional value
Modern geometry
Great suspension performance
Versatile for all-mountain riding
Pedal bob on long climbs
Limited water bottle space
Underpowered brakes on some models
Press-fit bottom bracket issues
Somewhat vague-feeling climbing characteristics
The YT Jeffsy turned our usual value conversation on its head.
BetaWith the YT Jeffsy Base 29, you get an incredibly capable bike at an exceptional value.
BIKE MagazineThe Jeffsy is an excellent jack of all-mountain trades.
Bike PerfectThis is about as close as you can get to the ‘one bike for all’ ideal for how a lot of modern mountain bikers ride.
BikerumorThe new Mk III Jeffsy feels more capable but just as much fun as ever
BikeRadarFeedback?
View all reviews
Nov 2024 · Nelson
With a value spec of workhorse components, and putting higher-end components where it matters, this is a hard package to beat.
Top-notch paint quality and finish
Cleanly designed internal cable routing
V4L suspension design for great traction and efficient climbing
SRAM SX Eagle 12-speed with a broad gearing range
SRAM G2 R brakes with adjustable reach levers
YT Postman 100mm dropper seatpost enhances riding experience
Maxxis DHR II tires for excellent cornering and traction
Great value with workhorse components and higher-end components where it matters
SRAM SX Eagle drivetrain requires regular adjustment
760mm-wide aluminum handlebar too wide for most kids
Significant seal friction in forks and shocks for lighter riders
Stiff 35mm aluminum handlebar may exacerbate feedback and control issues
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…
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
Jul 2022 · Simon Kohler
In our 2022 trail bike group test, the YT JEFFSY 6 stands up against the competition with an electronic RockShox Flight Attendant suspension system.
Clean look
Solid climber
Direct and precise handling
Brakes lack power
Limited freedom of movement (due to long seat tube and short dropper post)
May 2022 · Ed Thomsett
An excellent complete package that makes fun of all but the gnarliest descents, thanks to a head angle that feels too steep
Predictable ride quality
A solid suite of parts
Great for riding just about any terrain
Conservative head angle
A good price, but the outrageous value YT’s reputation was built on isn’t there
Apr 2022 · Matt Beer
Following the recent release of YT's Capra and Decoy MX Uncaged 9 builds is the trail-friendly 150mm Jeffsy Uncaged 8.
| Fork | CANE CREEK HELM MK2, 29“ | 150 mm Travel (extendable up to 160 mm) | 44 mm Offset | Adjustable High- and Low-Speed Compression and Lowspeed Rebound Travel: 150mm |
|---|---|
| Shock | CANE CREEK KITSUMA AIR, Shock Length 210 mm | Stroke 55 mm ≙ 150 mm travel | 3-Pos Climb Switch | Adjustable High- and Low-Speed Compression and High- and Low-Speed Rebound | Twin Tube Travel: 150mm |
| Headset | CANE CREEK Hellbender 70, ZS44 ZS56 | Stainless Steel Bearings I 2 Spacer 5 mm |
| Stem | RENTHAL APEX 35, Length 50 mm | 35 mm Clamp | Rise +/- 6° |
| Handlebar | RENTHAL FATBAR 35, Width 780 mm | Rise 30 mm | 7° Back Sweep | 5° Up Sweep | Custom Black |
| Saddle | SDG BEL AIR 3.0, YT Custom | Width 140 mm | Lux-Alloy Rail |
| Seatpost | SRAM REVERB AXS, Ø 31.6 mm | 125 mm Drop (Frame Size S-M) | 150 mm Drop (Frame Size L) | 170 mm Drop (Frame Size XL-XXL) | MMX-Remote Type: Dropper |
| Grips | ODI ELITE MOTION V2.1, Lock On |
| Rear Derailleur | SRAM GX EAGLE AXS, Wireless | Instant Activation | 12-speed | Battery Protector |
|---|---|
| Crank | SRAM GX Eagle, Crank Arm Length 175 mm | 32T | DUB |
| Shifters | SRAM GX EAGLE AXS CONTROLLER, 12-speed | Right |
| Cassette | SRAM XG 1275 EAGLE, 10-52T | 12-speed |
| Brakes | SRAM G2 RSC, Rotor CENTERLINE Ø front 200 mm / rear 200 mm | adjustable Bite Point and Reach Type: SRAM G2 RSC Hydraulic Disc |
| Rims | CRANKBROTHERS SYNTHESIS ENDURO ALLOY , Front: Aluminum Rims 29“ | Inner Width 31,5 mm | Hub 110 x 15 mm | Rear: Aluminum Rims 29“ | Inner Width 29,5 mm | Hub 148 x 12 mm | Freehub I9 1/1 XD |
|---|---|
| Tires | FRONT: MAXXIS MINION DHF I REAR: MAXXIS MINION DHR II, Front: Tire Size 29“ x 2.5 WT | EXO Casing | 3C MaxxGrip Compound | Tubeless Ready | Rear: Tire Size 29“ x 2.4 WT | EXO Casing | 3C MaxxTerra Compound | Tubeless Ready |
First added April 27
Last updated October 21
Not listed for 960 days