yt Industries Jeffsy CORE 4 29 2023
2023 Mountain
Estimate price |
4,999$
Weight | 14.32 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Carbon -
Wheels 29" -
Travel Front 150mm -
Travel Rear 150mm -
Fork Fox Factory Float 36
-
Groupset X01 Eagle, Truvativ Descendant Carbon -
Suspension Full -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
SM
154cm - 166cm
MD
163cm - 176cm
LG
173cm - 185cm
XL
182cm - 194cm
XXL
191cm - 202cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Suspension Fork
FOX 36 FLOAT FACTORY, 29“ | 150 mm Travel | Grip 2 | 110 x 15 mm Axle | 44 mm Offset
Rear Shock
FOX FLOAT X FACTORY, Shock Length: 210 mm | Shock Stroke: 55 mm ? 150 mm Travel | 2-way Adjustable Low-Speed Compression, Adjustable Rebound and Air Pressure, Kashima Coating
Drivetrain
Rear Derailleur
SRAM X01 EAGLE, 12-speed
Shift Levers
SRAM X01 EAGLE, 12-speed
Cassette
SRAM XG1295 EAGLE, 10-52T | 12-speed
Crank
SRAM Descendant Carbon, Crank Arm Length 175 mm | 32T I DUB-PressFit
Wheels
Rims
CRANKBROTHERS SYNTHESIS ALLOY I9, 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
MAXXIS MINION DHR II, Tire Size 29“ x 2.4 | EXO Casing | Tubeless Ready | 3C MaxxGrip EXO TR | 3C Maxx Terra EXO TR
Brakes
Brakes
SRAM G2 RSC, Rotor CENTERLINE Ø front 200 mm / rear 200 mm | Adjustable Bite Point and Reach
Cockpit
Stem
RENTHAL APEX 35, 50 mm |+/-6° | Black/ Gold
Handlebar
RENTHAL FATBAR 35, 780mm | 30mm Rise | 7° Back | 5° Up | Custom Black
Grips
ODI ELITE MOTION V2.1, Lock-On
Headset
ACROS AZX-576, ZS44 ZS56 | High Cap | 2 Spacer 5 mm
Seat
Saddle
SDG BEL AIR 3.0, YT Custom | Width 140 mm
Seatpost
YT POSTMAN MMX Remote, Ø 31.6mm | 125 mm (S-M) | 150 mm (L) | 170 mm (XL-XXL)
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL | XXL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.437 mm | 1.382 mm | 1.334 mm | 1.298 mm | 1.255 mm |
| Bottom Bracket Height | 352 mm | 352 mm | 352 mm | 352 mm | 352 mm |
| Front Center | 740 mm | 762 mm | 784 mm | 808 mm | 830 mm |
| Rake | 41 mm | 41 mm | 41 mm | 41 mm | 41 mm |
| Trail | 122 mm | 122 mm | 122 mm | 122 mm | 122 mm |
| Stack | 618 mm | 622 mm | 627 mm | 636 mm | 640 mm |
| Reach | 430 mm | 450 mm | 470 mm | 490 mm | 510 mm |
| Top Tube Length | 572 mm | 593 mm | 615 mm | 638 mm | 660 mm |
| Seat Tube Angle | 77 ° | 77 ° | 77 ° | 77 ° | 77 ° |
| Seat Tube Length | 400 mm | 415 mm | 435 mm | 460 mm | 485 mm |
| Head Tube Angle | 66 ° | 66 ° | 66 ° | 66 ° | 66 ° |
| Head Tube Length | 100 mm | 105 mm | 110 mm | 120 mm | 125 mm |
| Chainstay Length | 435 mm | 435 mm | 435 mm | 440 mm | 440 mm |
| Wheelbase | 1174 mm | 1196 mm | 1218 mm | 1247 mm | 1269 mm |
| Bottom Bracket Drop | 24 mm | 24 mm | 24 mm | 24 mm | 24 mm |
| Standover Height | 706 mm | 702 mm | 701 mm | 693 mm | 694 mm |
| Wheels | 29" | 29" | 29" | 29" | 29" |
| Rider Min Height | 154 cm | 163 cm | 173 cm | 182 cm | 191 cm |
| Rider Max Height | 166 cm | 176 cm | 185 cm | 194 cm | 202 cm |
Model Overview
Jeffsy CORE 4 29 completes the Yt Jeffsy model. 64 bikes variations carry this model name so far. Check out the entire range from 2023 of this model, by clicking this link.
Model range prices
YT Industries Jeffsy Primus 24 2023 is the cheapest bike model and costs 1999$. YT Industries Jeffsy UNCAGED 6 29 2023 is the most expensive one and costs 8915$.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Average price for Enduro bikes
Our math shows that the average cost of a dependable Enduro bike is 3599$. However, this doesn’t mean that if you spend less money on an Enduro bike, you couldn’t get a decent one. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
When YT Industries released this model in 2023, its price was 4999$. Comparing this to the average Enduro bike price, we see that the price is 38.9% more expensive.
Average weight for Enduro bikes
Enduro bikes weigh an average of 14.27 kg (31.46 lbs). Having an easier bike than average will give you a great advantage on climbs. However, a heavier bike will gain more speed on descends.
YT Industries Jeffsy CORE 4 29 it’s weighing 14.32 kg (31.57 lbs). At this weight, is slightly heavier than average. To sum up, it’s 0.35% heavier than the average weight of Enduro bikes.
Jeffsy CORE 4 29 components
Fork
The Jeffsy CORE 4 29 comes factory-installed with the Fox Factory Float 36 fork. This has a travel range of 150mm. Bike forks are great for shock absorption and provide you with a smooth ride. In short, make sure you choose one with a decent fork when you purchase your dream bike.
Rear Shock
From the factory, it comes with the FOX FLOAT X FACTORY rear shock model, which has a travel of 150mm. Bike rear shocks are a great way to increase comfort on the bike and give you more control when riding on technical trails. In short, if you want smooth rides, get a full-suspension bicycle.
Wheels size
The Jeffsy CORE 4 29 2023 bike is equipped with 29″ aluminum wheels when leaving the factory. With 29″ wheels, bumps will feel lighter and you’ll gain more speed on descends, compared to smaller wheel-sized bikes. However, if you’re not a tall person, you might find it difficult to adapt to this wheel size.
Brakes
Nothing is more important on a bike than its ability to brake properly. YT Industries Jeffsy CORE 4 29 is equipped with Hydraulic Disc brakes. Hydraulic disc brakes provide amazing stopping power, no matter what the terrain. To sum up, your safety is in good hands.
Sizes
This bike is available in 5 sizes. They vary from 154 cm – 202 cm (5.05 ft – 6.63 ft). In short, it won’t be difficult to find the right one for you.
Dropper post
YT Industries Jeffsy CORE 4 29 comes with a dropper post. If used correctly, a dropper post gives you more faith, maneuverability, and greater control over your bike.