yt Industries Jeffsy Primus 27 2023
2023 Youth
Estimate price |
2,399$
Weight | 15.3 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 27.5" -
Travel Front 150mm -
Travel Rear 150mm -
Fork RockShox Lyrik
-
Groupset SX Eagle -
Suspension Full -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
One Size
154cm - 165cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Suspension Fork
ROCKSHOX LYRIK BASE, 27.5“ | 150 mm Travel | RC | 100 x 15 mm Axle | Offset 44 mm | Adjustable Rebound, Air Pressure
Rear Shock
ROCKSHOX DELUXE SELECT, Shock Length: 230 mm | Shock Stroke: 60 mm ? 150 mm Travel | Adjustable Rebound, Air Pressure, Custom Tune 0L1230x60mm | R |Custom Tune 0L1| Volume Reducer
Drivetrain
Rear Derailleur
SRAM SX EAGLE, 12-speed
Shift Levers
SRAM SX EAGLE, 12-speed
Cassette
SRAM PG1210 Eagle, 11-50T | 12-speed
Crank
SRAM SX EAGLE, Crank Arm Length 165 mm | 32T | DUB
Wheels
Rims
SUNRINGLÉ DUROC 35, Aluminum Rims 27.5“ | Inner Width 31 mm | Front Hub 100 x 15 mm | Rear Hub 148 x 12 mm
Tires
FRONT: MAXXIS MINION DHF I REAR: MAXXIS MINION DHR II, Front: Tire Size 27.5“ x 2.4 I EXO Casing I 3C MaxxTerra Compound I Tubeless Ready I Rear: Tire Size 27.5“ x 2.3 I EXO Casing I Dual Compound I Tubeless Ready
Brakes
Brakes
SRAM G2 R, Rotor CENTERLINE Ø front 200 mm / rear 200 mm Adjustable Reach
Cockpit
Stem
E13 BASE 35, Length 40 mm | 35 mm Clamp | Rise 0° | 6061 AL
Handlebar
E13 BASE 35, Width 760 mm | Rise 20 mm | 9° Back Sweep | 5° Up Sweep | 6061 AL
Grips
ODI ELITE MOTION V2.1, Lock On
Headset
ACROS AZX-576, High Cap | 2 Spacer 5 mm
Seat
Saddle
SDG BEL AIR 3.0, YT Custom | Width 140 mm I Lux-Alloy Rail
Seatpost
YT POSTMAN, Ø 31.6 mm | Length 125 mm | Standard-Remote
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | One Size |
|---|---|
| Stack Reach Ratio | 1.42 mm |
| Bottom Bracket Height | 352 mm |
| Front Center | 735 mm |
| Rake | 42 mm |
| Stack | 593 mm |
| Reach | 417 mm |
| Top Tube Length | 562 mm |
| Seat Tube Angle | 76.4 ° |
| Seat Tube Length | 395 mm |
| Head Tube Angle | 65.7 ° |
| Head Tube Length | 110 mm |
| Chainstay Length | 427 mm |
| Wheelbase | 1162 mm |
| Bottom Bracket Drop | 6 mm |
| Wheels | 27" |
| Rider Min Height | 154 cm |
| Rider Max Height | 165 cm |
About this model
Jeffsy Primus 27 is part of the Yt Jeffsy model. YT Industries launched 64 bikes of this model so far. You can get a glimpse at all models from 2023, by clicking on this link.
Model range prices
YT Industries Jeffsy Primus 24 2023 is the most affordable bike of this model and has a price of 1999$. On the other hand, YT Industries Jeffsy UNCAGED 6 29 2023, is the most expensive and costs 8915$.
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 Mountain bikes
According to our math, the average price for a trustworthy Mountain bike is 616$. However, you could also get a good Mountain bike even if you pay a lower amount than the average price. As a general rule of thumb, you should always read reviews about the bike and its components before buying it to ensure you don’t pay too much.
This bike was released in 2023 and its price was 2399$. If we compare this with the average Mountain bike cost we notice that the price is 289.45% higher.
Mountain bikes average weight
If we make a quick analysis of the average weight of a Mountain bike, we get 11.4 kg (25.13 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.
much heavier than average, Jeffsy Primus 27 has a weight of 15.3 kg (33.73 lbs). To sum up, it’s 34.21% heavier than the average weight of Mountain bikes.
Overview of components
Fork
This bike has the RockShox Lyrik fork installed. The fork’s travel is 150mm. Bike forks absorb the shocks and give you a smooth and pleasant ride. To sum up, when buying a bicycle, make sure you get a fork that is capable of delivering decent travel.
Rear Shock
The shock that’s installed on this bike is ROCKSHOX DELUXE SELECT, with a travel distance of 150mm. Rear shocks improve riding comfort and give you greater control over all terrains. In conclusion, to increase your riding experience, get a bike with a rear shock if possible.
Wheels size
When leaving the production line, the Jeffsy Primus 27 model has 27.5″ aluminum wheels. The 27.5″ wheels are a great choice for smaller riders. However, the overall traction of 27.5″ wheels is lower than 29″ wheels.
Brakes
When you want to stop the bike in time, the brakes are vital. The Jeffsy Primus 27 has Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, these are ideal for anyone.
Sizes
YT Industries Jeffsy Primus 27 2023 is available in one size only. In short, make sure you double-check if it fits you.
Dropper post
Every bike should have a dropper post, and this one does. Therefore, climbing or descending will be a breeze.