YT Industries YT Jeffsy CORE 2 2021
2021 Mountain
Estimate price |
2,999$
Weight | 15.1 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 27.5" -
Travel Front 160mm -
Travel Rear 160mm -
Fork Fox Performance Float 36
-
Groupset NX Eagle, Truvativ Descendant -
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
Frame
Aluminum
Suspension Fork
FOX 36 Float Performance, 27,5“ | 160 mm Travel | Grip | 110 x 15 mm Axle | 44 mm Offset
Rear Shock
FOX FLOAT DPX2 PERFORMANCE, Shock Length: 230 mm | Shock Stroke: 65 mm ? 160 mm Travel | 3pos-Adjust
Drivetrain
Rear Derailleur
SRAM NX EAGLE, 12-speed
Shift Levers
SRAM NX EAGLE, 12-speed
Cassette
SRAM PG 1230 EAGLE, 10-50T | 12-speed
Crank
SRAM Descendant 6k, Crank Arm Length 175 mm | 32T I DUB-PressFit
Wheels
Rims
DT SWISS M 1900 SPLINE, Aluminum Rims 27,5“ | Inner Width 30 mm | Front Hub 110 x 15 mm | Rear Hub 148 x 12 mm
Tires
MAXXIS MINION DHR II, Tire Size 27,5“ x 2.4 | EXO Casing | Tubeless Ready | Dual Compound
Brakes
Brakes
SRAM G2 R, Rotor CENTERLINE Ø front 200 mm / rear 200 mm | Adjustable Reach
Cockpit
Stem
E13 Base 35, Length 50 mm
Handlebar
E13 Base 35
Grips
ODI ELITE MOTION V2.1, Lock-On
Headset
ACROS AZX-576, High Cap
Seat
Saddle
SDG BEL AIR 3.0, YT Custom | Width 140 mm
Seatpost
YT POSTMAN, Ø 31.6 mm | 125 mm Drop (Frame Size S-M) | 150 mm Drop (Frame Size L) | 170 mm Drop (Frame Size XL-XXL) | Standard Remote
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL | XXL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.42 mm | 1.38 mm | 1.34 mm | 1.3 mm | 1.27 mm |
| Bottom Bracket Height | 344 mm | 344 mm | 344 mm | 344 mm | 344 mm |
| Front Center | 735 mm | 759 mm | 783 mm | 807 mm | 831 mm |
| Rake | 42 mm | 42 mm | 42 mm | 42 mm | 42 mm |
| Trail | 116 mm | 116 mm | 116 mm | 116 mm | 116 mm |
| Stack | 593 mm | 603 mm | 612 mm | 621 mm | 630 mm |
| Reach | 417 mm | 437 mm | 457 mm | 477 mm | 497 mm |
| Top Tube Length | 562 mm | 585 mm | 608 mm | 631 mm | 655 mm |
| Seat Tube Angle | 76.5 ° | 76.5 ° | 76.5 ° | 76.5 ° | 76.5 ° |
| Seat Tube Length | 395 mm | 415 mm | 435 mm | 460 mm | 485 mm |
| Head Tube Angle | 65.5 ° | 65.5 ° | 65.5 ° | 65.5 ° | 65.5 ° |
| Head Tube Length | 110 mm | 120 mm | 130 mm | 140 mm | 150 mm |
| Chainstay Length | 427 mm | 427 mm | 427 mm | 432 mm | 432 mm |
| Wheelbase | 1162 mm | 1186 mm | 1210 mm | 1239 mm | 1263 mm |
| Bottom Bracket Drop | 13 mm | 13 mm | 13 mm | 13 mm | 13 mm |
| Standover Height | 671 mm | 679 mm | 692 mm | 706 mm | 721 mm |
| Wheels | 27" | 27" | 27" | 27" | 27" |
| 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 2 is a Yt Jeffsy model. There are 64 bikes that carry this model name. Take a sneak peek at all Yt Jeffsy bikes models from 2021, by clicking here.
Model range prices
YT Jeffsy Primus 2021 is the cheapest bike model and costs 1899$. YT JEFFSY Pro Race 29 2021 is the most expensive one and costs 5299$.
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
If you want to purchase a solid Enduro bike, it is important to know that the average cost is 3599$. However, you could also get a good Enduro bike even if you pay a lower amount than the average price. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
Furthermore, this bike was made available in 2021 for 2999$. In conclusion, this bike price is 20.01% lower than the price of the average Enduro bike.
Average weight for Enduro bikes
If we make a quick analysis of the average weight of an Enduro bike, we get 14.27 kg (31.46 lbs). It is a good advantage to have a lighter bike than the average. However, a heavier bike is more efficient on descents.
YT Jeffsy CORE 2 it’s weighing 15.1 kg (33.29 lbs). At this weight, is a bit heavier than average. In other words, this model is 5.82% heavier than the average Enduro bike.
Overview of components
Fork
The Jeffsy CORE 2 comes factory-installed with the Fox Performance Float 36 fork. This has a travel range of 160mm. Bike forks absorb the shocks and give you a smooth and pleasant ride. In conclusion, always look for a fork with decent travel when you buy a bike.
Rear Shock
The Jeffsy CORE 2 has a rear shock with a travel of 160mm. The model FOX FLOAT DPX2 PERFORMANCE is the one installed in this bike. Rear shocks improve riding comfort and give you greater control over all terrains. To sum up, get a full-suspension bike if you want the smoothest rides.
Wheels size
As for the wheels, YT Jeffsy CORE 2 2021, has a 27.5″ aluminum model. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, these wheels have a slower top speed if you compare them to 29″ wheels.
Brakes
When you want to stop the bike in time, the brakes are vital. The Jeffsy CORE 2 has 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 conclusion, it won’t take much to find one that’s right for you.
Dropper post
YT Jeffsy CORE 2 comes with a dropper post. A dropper post is a must-have these days if you’re riding anything remotely technical. The main benefit of a dropper post is increased safety while riding. As mentioned above, the lever system allows you to quickly move the saddle out of the way when approaching descents or trail obstacles.