2025 YT Industries Jeffsy Primus 26 base
- Category
- Full-suspension Trail MTB
- Design
- Flat Bar, Full suspension
- Frame
- Aluminum
- Fork
- Aluminum
- Suspension
- 140mm fork travel, 140mm rear travel
- Features
- Disc brake
Geometry
FlipChipLow | FlipChipHigh | |
Stack | 549mm | 549mm |
Reach | 397mm | 397mm |
Stack to Reach Ratio | 1.38:1 | 1.38:1 |
Seat Tube Length, Unknown | 355mm | 355mm |
Top Tube Slope | 23deg | 23.1deg |
Head Tube Angle | 65.5deg | 66deg |
Seat Tube Angle | 76.5deg | 77deg |
Bottom Bracket Drop | -5mm | 4mm |
Bottom Bracket Height | 345.5mm | 336.5mm |
Chainstay Length | 415mm | 415mm |
Chainstay Length Horizontal | 415mm | 415mm |
Front-Center | 690.1mm | 690mm |
Front-Center Horizontal | 690mm | 690mm |
Wheelbase | 1105mm | 1105mm |
Fork Offset/Rake | 36.9mm | 46mm |
Trail | 114.6mm very high | 101.2mm very high |
Mechanical Trail | 104.3mm | 92.5mm |
Wheel Flop | 43.2mm | 37.6mm |
Tire to Pedal Spindle | 184.6mm 165 mm cranks | 184.6mm 165 mm cranks |
Pedal Spindle to Ground Clearance | 180.5mm 165 mm cranks | 171.5mm 165 mm cranks |
26 base Build
FlipChipLow | FlipChipHigh | |
Wheel Size | 26 in 559 mm BSD | 26 in 559 mm BSD |
Tire Width | 2.4in | 2.4in |
Tire Outer Diameter | 680.9mm | 680.9mm |
Bike Length with Tires | 1785.9mm | 1785.9mm |
Crank Length | 165mm | 165mm |
Handlebar Width | 760mm | 760mm |
Stem Length | 40mm | 40mm |
Stem Angle | 0deg | 0deg |
Published Sizing Recommendations
Height | 145 cm to 160 cm | 145 cm to 160 cm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Full-suspension Trail MTBSource:https://www.yt-industries.com/Bikes/Junior-Primus/26/