Jeffsy CORE 4 29
A 29″ carbon frame full suspension enduro bike with ultra high-end components.
Compare the full range
Manufacturer Price
$4,999Weight | 30.6 lbs |
---|---|
Frame | Carbon |
Suspension | Full, 150 / 150mm |
Fork | Fox Factory Float 36 |
Shock | Fox Float DPX2 Factory |
Wheels | 29″ Aluminum |
Drivetrain | 1 × 12 |
Groupset | X01 Eagle, Truvativ Descendant Carbon |
Brakes | Hydraulic Disc |
Seatpost | Dropper |
For This Bike
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.
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
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.
Dec 2021 · Lydia Tanner
A great value with an appetite for rowdier trails. .
Incredibly capable
Incredibly fun
Incredibly versatile
Incredible value
Pedal bob had us using the lockout on long climbs
Slightly limited water bottle space
Could use stronger brakes
Nov 2021 · Alan Muldoon
Whether you’re 5ft 1in or 6ft 4in tall, you won’t have any issues achieving a glove-like fit on the YT Industries Jeffsy Core 2.
Great suspension & handling
Pricey given the spec
Oct 2021 · Robert Johnston
The YT Jeffsy 29 Core 4 is a versatile all mountain bike that’ll happily crunch out mellower miles or tackle some tough enduro tracks.
Well-Rounded nature
Capable suspension package
Technical climbing prowess
Steeper head angle in steep terrain
Flimsy tires
Aug 2021 · McCoy
The Jeffsy hits the mark for a rider who wants to go a step beyond...
Fork | FOX 36 FLOAT FACTORY, 29“ | 150 mm Travel | Grip 2 | 110 x 15 mm Axle | 44 mm Offset Travel: 150mm Spring Type: Air |
---|---|
Shock | FOX FLOAT DPX2 FACTORY, Shock Length: 210 mm | Shock Stroke: 55 mm ≙ 150 mm Travel | 3pos-Adjust Travel: 150mm Spring Type: Air |
Headset | ZS44 ZS56 | High Cap | 2 Spacer 5 mm, ACROS AZX-576 |
Stem | RENTHAL APEX 35, 50 mm |+/-6° | Black/ Gold |
Handlebar | RENTHAL FATBAR 35, 780mm | 30mm Rise | 7° Back | 5° Up | Custom Black |
Saddle | SDG BEL AIR 3.0, YT Custom | Width 140 mm |
Seatpost | YT POSTMANMMX Remote, Ø 31.6mm | 125 mm (S-M) | 150 mm (L) | 170 mm (XL-XXL) Type: Dropper |
Grips | ODI ELITE MOTION V2.1, Lock-On |
Rear Derailleur | SRAM X01 EAGLE, 12-speed |
---|---|
Crank | SRAM Descendant Carbon, Crank Arm Length 175 mm | 32T I DUB-PressFit |
Shifters | SRAM X01 EAGLE, 12-speed |
Cassette | SRAM XG1295 EAGLE, 10-52T | 12-speed |
Brakes | SRAM G2 RSC, Rotor CENTERLINE Ø front 200 mm / rear 200 mm | Adjustable Bite Point and Reach Type: Hydraulic Disc |
Rims | DT SWISS XM 1700 SPLINE, Aluminum Rims 29“ | Inner Width 30 mm | Front Hub 110 x 15 mm | Rear Hub 148 x 12 mm I XD I Ratchet 36SL |
---|---|
Tires | MAXXIS MINION DHR II, Tire Size 29“ x 2.4 | EXO Casing | Tubeless Ready | 3C MaxxGrip Compound |
Last updated April 22
Not listed for 364 days