yt Industries Jeffsy CORE 4 29 2024
2024 Mountain
Estimate price |
5,816$
Weight | 15.1 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Carbon -
Wheels 29" -
Travel Front 150mm -
Travel Rear 145mm -
Fork RockShox Lyrik Ultimate
-
Groupset GX Eagle Transmission, SRAM -
Suspension Full -
Drivetrain 1 × 12 Electronic -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
SM
153cm - 166cm
MD
162cm - 176cm
LG
172cm - 185cm
XL
181cm - 194cm
XXL
190cm - 203cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Suspension Fork
ROCKSHOX LYRIK ULTIMATE, 29“ | 150 mm | Charger 3 | 15 x 110mm | 44 mm Offset
Rear Shock
ROCKSHOX SDLX ULTIMATE, Shock Length: 210 mm | Shock Stroke: 55 mm | 145 mm Travel | RC2T | 0L2 Volume Reducer
Drivetrain
Rear Derailleur
SRAM GX EAGLE TRANSMISSION, 12-speed
Shift Levers
SRAM AXS ROCKER PADDLE, 12-speed
Cassette
SRAM GX EAGLE TRANSMISSION, 10-52T | T-Type | 12-speed
Crank
SRAM GX EAGLE TRANSMISSION, Crank Arm Length 170 mm | 32T | 2 Guards DUB
Bottom Bracket
SRAM DUB Pressfit, BB DUB PF 92 MTB WIDE
Wheels
Rims
CRANKBROTHERS Synthesis Enduro Alloy, 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 XD
Tires
FRONT: MAXXIS DHF I REAR: MAXXIS MINION DHR II, Front: Tire Size 29“ x 2,50 I EXO+ Casing I 3C MaxxTerra Compound I Tubeless Ready I, Rear: Tire Size 29“ x 2,40 I EXO+ Casing I 3C MaxxTerra Compound I Tubeless Ready
Brakes
Brakes
SRAM CODE RSC, Rotor CENTERLINE | Front 200 mm / Rear 200 mm Adjustable Bite Point and Reach
Cockpit
Stem
RENTHAL APEX 35, Length 50mm | 35mm Clamp | Rise +/-6° | Black/Black
Handlebar
RENTHAL AL2014, Width 780mm | Rise 30mm | 7° Back Sweep | 5° Up Sweep | 6061 AL
Grips
ODI ELITE MOTION V2.1, Lock On
Headset
CANE CREEK SERIES 40, ZS44 ZS56 | High Cap | 2 Spacer 5mm
Seat
Saddle
SDG BEL AIR 3.0, YT Custom | Width 140 mm I Lux-Alloy Rail
Seatpost
YT POSTMAN V2, Ø 31,6mmI MMX-Remote | Adjustable drop 20/10/5mm | 125 mm (S) I 150 mm (M) | 170 mm (L) | 200 mm (XL) | 230mm (XXL)
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL | XXL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.376 mm | 1.331 mm | 1.293 mm | 1.255 mm | 1.221 mm |
| Bottom Bracket Height | 351 mm | 351 mm | 351 mm | 351 mm | 351 mm |
| Front Center | 755 mm | 779 mm | 802 mm | 826 mm | 849 mm |
| Rake | 44 mm | 45 mm | 45 mm | 46 mm | 46 mm |
| Trail | 122 mm | 120 mm | 120 mm | 119 mm | 119 mm |
| Stack | 608 mm | 615 mm | 622 mm | 629 mm | 636 mm |
| Reach | 442 mm | 462 mm | 481 mm | 501 mm | 521 mm |
| Top Tube Length | 562 mm | 585 mm | 607 mm | 630 mm | 652 mm |
| Seat Tube Angle | 77.5 ° | 78.1 ° | 78.5 ° | 78.9 ° | 79.2 ° |
| Seat Tube Length | 385 mm | 410 mm | 435 mm | 460 mm | 485 mm |
| Head Tube Angle | 65.6 ° | 65.6 ° | 65.6 ° | 65.6 ° | 65.6 ° |
| Head Tube Length | 100 mm | 108 mm | 116 mm | 124 mm | 132 mm |
| Chainstay Length | 435 mm | 435 mm | 435 mm | 440 mm | 440 mm |
| Wheelbase | 1189 mm | 1213 mm | 1236 mm | 1265 mm | 1288 mm |
| Bottom Bracket Drop | 25 mm | 25 mm | 25 mm | 25 mm | 25 mm |
| Standover Height | 738 mm | 736 mm | 740 mm | 746 mm | 750 mm |
| Wheels | 29" | 29" | 29" | 29" | 29" |
| Rider Min Height | 153 cm | 162 cm | 172 cm | 181 cm | 190 cm |
| Rider Max Height | 166 cm | 176 cm | 185 cm | 194 cm | 203 cm |
About this model
Jeffsy CORE 4 29 belongs to the Yt Jeffsy model. 69 bikes variations carry this model name so far. Take a sneak peek at all Yt Jeffsy bikes models from 2024, by clicking here.
Model range prices
YT Industries Jeffsy CORE 1 29 2024 is the most affordable bike of this model and has a price of 2646$. On the other hand, YT Industries Jeffsy CORE 5 29 2024, is the most expensive and costs 6352$.
Safety
When cycling always take safety very seriously. Wear a helmet, obey the traffic rules and wear hi-vis clothes. In short, take care of yourself so others can take care of you.
Average price for Trail bikes
Our math shows that the average cost of a dependable Trail bike is 2762$. However, even if your budget is less than the average, you might still be able to get a top-quality Trail bike. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
This bike was released in 2024 and its price was 5294$. In conclusion, this bike price is 91.67% more expensive than the price of the average Trail bike.
Trail bikes average weight
Trail bikes have an average weight of 12.98 kg (28.62 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 15.1 kg (33.29 lbs), YT Industries bike is much heavier than average. In other words, this model is 16.33% heavier than the average Trail bike.
Jeffsy CORE 4 29 components
Fork
This bike has the RockShox Lyrik Ultimate fork installed. The fork’s travel is 150mm. Bike forks are good shock absorbers and provide a smooth ride and a great experience. To sum it all, when buying a bike, ensure that you look for a fork capable of decent travel.
Rear Shock
As for the rear shock, this bike has the ROCKSHOX SDLX ULTIMATE model, with a travel of 145mm. Bike rear shocks increase the riding comfort, and also give you more control over technical trails. To sum up, get a full-suspension bike if you want the smoothest rides.
Wheels size
When leaving the production line, the Jeffsy CORE 4 29 model has 29″ aluminum wheels. With 29″ wheels, bumps will feel lighter and you’ll gain more speed on descends, compared to smaller wheel-sized bikes. However, the 29″ wheels will add a little more weight to the bike itself.
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 153 cm – 203 cm (5.02 ft – 6.66 ft). In short, it won’t be difficult to find the right one for you.
Dropper post
The YT Industries model is also equipped with a dropper post. Therefore, climbing or descending will be a breeze.