YT Industries YT JEFFSY Base 2021
2021 Mountain
Estimate price |
2,299$
Weight | 14.1 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 27.5" -
Travel Front 160mm -
Travel Rear 160mm -
Fork RockShox Yari RC
-
Groupset SX Eagle -
Suspension Full -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Jeffsy Alloy 27,5" high modular alloy main frame | V4L Virtual 4-Link rear suspension | 148x12mm DT Swiss QR Thru axle | down tube/seat stay/chain stay protection
Suspension Fork
RockShox Yari RC 27,5" | 160 mm | 15QR x 110 | 46 mm Rake
Rear Shock
RockShox Deluxe Select 230 x 65 mm
Drivetrain
Rear Derailleur
SRAM SX Eagle 12- Speed
Shift Levers
SRAM SX Eagle 12- Speed
Cassette
SRAM PG1210 Eagle 11- 50 T | 12- Speed
Crank
SRAM SX Eagle 175 mm | 32 T | DUB
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.
Wheels
Rims
DT Swiss M 1900 SPLINE 27,5" x 30 mm | 110 x 15 mm | 148 x 12 mm
Tires
MAXXIS Minion DHR II 27,5" x 2.4 | EXO | TR
Brakes
Brakes
SRAM Guide T Rotor Centerline 200 mm / 180 mm
Cockpit
Stem
Race Face AEFFECT R 35 50MM LENGTH | 35MM CLAMP | 0 RISE
Handlebar
Race Face AEFFECT R 780 mm Width | 20 mm Rise | 35 mm Clamp
Grips
ODI Elite Motion V 2.1 Lock- On
Headset
Acros AZX-576 High Cap
Seat
Saddle
SDG RDR MNT YT Custom
Seatpost
YT Postman 31.6 mm | S - M 125 mm drop / L 150 mm drop / XL - XXL 170 mm drop
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 |
| Wheels | 27" | 27" | 27" | 27" | 27" |
About this model
JEFFSY Base completes the Yt Jeffsy model. There are 64 bikes that carry this model name. Check out the entire range from 2021 of this model, by clicking this link.
Model range prices
The most economical model, the YT Jeffsy Primus 2021 has a starting price of 1899$. YT JEFFSY Pro Race 29 2021 on the other hand is the most expensive at 5299$.
Safety
Take safety seriously when you ride your bike, and always wear your helmet. Moreover, don’t ride on the sidewalk. This is actually against the law in some states and can be dangerous for both you and pedestrians.
Average price for Enduro bikes
If you want an acceptable Enduro bike you should know that the average price is 3599$. However, even though the average price of an Enduro bike is lower, you might still be able to get a top-quality bike. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.
When YT released this model in 2021, its price was 2299$. If we compare this with the average Enduro bike cost we notice that the price is 56.55% lower.
Enduro bikes average weight
Enduro bikes weigh an average of 14.27 kg (31.46 lbs). You will have a greater advantage on climbs if your bike is easier than the average. On descents, however, a heavier bike will give you extra speed.
With a weight of 14.1 kg (31.09 lbs), YT bike is slightly lighter than average. In short, the average Enduro bike weight is 1.21% higher than this one.
Overview of components
Fork
The fork installed on this bike is the RockShox Yari RC model. The travel on this model is 160mm. Bike forks are great for shock absorption and provide you with a smooth ride. In short, you should always ensure you have a good fork when purchasing a bike.
Rear Shock
The JEFFSY Base has a rear shock with a travel of 160mm. The model RockShox Deluxe Select 230 x 65 mm is the one installed in this bike. Rear shocks offer better comfort, better traction, and better cornering. This allows for quicker riding on rough roads and trails. To sum up, get a full-suspension bike if you want the smoothest rides.
Wheels size
When it comes to wheels, the JEFFSY Base bike is equipped with the 27.5″ aluminum model. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, the overall traction of 27.5″ wheels is lower than 29″ wheels.
Brakes
For your safety, it is important to have quality breaks on your bike. YT JEFFSY Base has Hydraulic Disc brakes installed. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, you can ride your bike with confidence.
Dropper post
Every bike should have a dropper post, and this one does. If used correctly, a dropper post gives you more faith, maneuverability, and greater control over your bike.