2025 YT Industries Jeffsy Primus 26 base FlipChipHigh
Build
26 in × 2.4 in
Insights
Very aggressive stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of YT Industries Jeffsy Primus
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 549mm |
| Reach | 397mm |
| Stack to Reach Ratio | 1.38:1 |
| Seat Tube Length, Unknown | 355mm |
| Top Tube Slope | 23.1deg |
| Head Tube Angle | 66deg |
| Seat Tube Angle | 77deg |
| Bottom Bracket Drop | 4mm |
| Bottom Bracket Height | 336.5mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 415mm |
| Front-Center | 690mm |
| Front-Center Horizontal | 690mm |
| Wheelbase | 1105mm |
| Fork Offset/Rake | 46mm |
| Trail | 101.2mm very high |
| Mechanical Trail | 92.5mm |
| Wheel Flop | 37.6mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 184.6mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 171.5mm |
26 base Build
| Wheel Size | 26 inch (559mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 680.9mm |
| Bike Length with Tires | 1785.9mm |
| Crank Length | 165mm |
| Handlebar Width | 760mm |
| Stem Length | 40mm |
| Stem Angle | 0deg |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Rear Travel | 140mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 145 cm to 160 cm |
Source:https://www.yt-industries.com/Bikes/Junior-Primus/26/