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Today’s DealsJEFFSY PRIMUS JP 24
A 24″ aluminum frame mountain youth bike with high-end components and sram guide r hydraulic disc brakes.
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Manufacturer Price
$1,899| Weight | 27.1 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Full, 130 / 130mm |
| Fork | Manitou Machete JUNIT |
| Shock | Manitou |
| Wheels | 24″ Aluminum |
| Drivetrain | 1 × 11 |
| Groupset | X1, NX |
| Brakes | SRAM Guide R Hydraulic Disc |
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 descents with stable and predictable handling, while its suspension offers great traction and support. However, it faces some criticism for pedal bob on climbs and limited water bottle space.
Incredibly capable and fun
Exceptional value
Stable and confident descender
Great suspension performance
Versatile for various terrains
Pedal bob on long climbs
Limited water bottle space
Somewhat heavy
Underpowered brakes on some models
Press-fit bottom bracket issues
The YT Jeffsy turned our usual value conversation on its head.
With the YT Jeffsy Base 29, you get an incredibly capable bike at an exceptional value.
The Jeffsy is an inimitable trail boss of a bike
Feedback?
View all reviews
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

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...

Jun 2021 · Jeremy Benson
The Jeffsy Core 3 is the latest version of YT's popular longer travel trail bike. While other brands have gone to extremes with their geometry, this bike's...
Excellent value
Great build for the price
Composed and confident descender
Super quiet
Well-rounded performance
A little heavy
Not the fastest climber
Geometry feels a touch dated
Limited water bottle space

Feb 2021 · Jessie-May Morgan
YT Blaze models introduce top-end Deluxe Ultimate RockShox suspension to the Izzo trail bike, Jeffsy all-mountain bike and Capra enduro bike

Dec 2020 · Sven Günzel
“Come on kids, get ready and pack your stuff, today we’re heading to the mountains! We’ll hike all day and drink a big glass of fresh buttermilk at the top!" Sound familiar? Yeah, great memories, but times have changed and modern kids have a totally different idea of fun. The YT JEFFSY PRIMUS JP 24 delivered tons of it on our last family outing.
Outstanding chassis tuning
Child-specific contact points
Fuuuuuuuun factor
No dropper post
Relatively heavy
Not ideal for long rides


| Fork | MANITOU Machete JUNIT 24" | 130 mm | 15x110 mm | 42 mm Rake Travel: 130mm |
|---|---|
| Shock | MANITOU McLeod 190x40 mm Travel: 130mm |
| Headset | Acros AZX-576 High Cap |
| Stem | SDG Jr 45 mm |
| Handlebar | SDG Slater 20 mm Rise | 650 mm Width |
| Saddle | SDG Fly Jr YT Custom |
| Seatpost | SDG Jr 31.6 mm | 8 mm Offset | +/- 13 ° Rise | Alloy Type: Rigid |
| Pedals | included / inklusive The included pedals were not made for demanding trails or racing. That is why we also offer you quality pedals at an attractive price in the shopping cart. |
| Grips | SDG Slater Jr |
| Rear Derailleur | SRAM NX 11 - Speed |
|---|---|
| Crank | SRAM X1 Eagle 155 mm | 30 T | DUB |
| Shifters | SRAM NX 11 - Speed |
| Cassette | SRAM PG1130 11 - 42T | 11-Speed |
| Brakes | SRAM Guide R Custom 2 Piston Caliper | Rotor CENTERLINE 160 mm / 160 mm Type: SRAM Guide R Hydraulic Disc |
| Rims | SUNringlé DUROC 24" x 30 mm | 110 x 15 mm | 148 x 12 mm |
|---|---|
| Tires | Front: MAXXIS Minion DHF MaxxTerra 24" x 2.4 | EXO | TR, Rear: MAXXIS Minion DHR II Dual Compound 24" x 2.3 | EXO | TR |
First added February 14
Last updated August 5
Not listed for 2,132 days