2018 YT Industries Jeffsy Jeffsy 27 AL
- Category
- Full-suspension Trail MTB
- Design
- Flat Bar, Full suspension
- Frame
- Aluminum
- Suspension
- 150mm fork travel, 150mm rear travel, 20% sag
- Features
- Disc brake
Geometry
M | M | L | L | |
Stack | 597mm | 597mm | 611mm | 611mm |
Reach | 440mm | 440mm | 460mm | 460mm |
Stack to Reach Ratio | 1.36:1 | 1.36:1 | 1.33:1 | 1.33:1 |
Seat Tube Length, C-T | 450mm | 450mm | 480mm | — |
Seat Tube Length, Unknown | — | — | — | 480mm |
Top Tube Length, Effective/Horizontal Center | — | 602mm | 625mm | — |
Top Tube Length, Effective/Horizontal Unknown | 602mm | — | — | 625mm |
Top Tube Slope | 16.3deg | 16.3deg | 14.2deg | 14.2deg |
Head Tube Angle | 66.5deg | 66.5deg | 66.5deg | — |
Seat Tube Angle | 75deg | 75deg | 75deg | 75deg |
Head Tube Length | 110mm | 110mm | 125mm | 125mm |
Bottom Bracket Drop | 15mm | 15mm | 15mm | 15mm |
Bottom Bracket Height | 338mm | 338mm | 338mm | 338mm |
Chainstay Length | 430mm | 430mm | 435mm | 435mm |
Chainstay Length Horizontal | 429.7mm | 429.7mm | 434.7mm | 434.7mm |
Front-Center | 739mm | 739mm | 765mm | 765mm |
Front-Center Horizontal | 739.3mm | 739.3mm | 765.3mm | 765.3mm |
Wheelbase | 1169mm | 1169mm | 1200mm | 1200mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | — |
Trail | 105.5mm very high | 105.5mm very high | 105.5mm very high | — — |
Mechanical Trail | 96.7mm | 96.7mm | 96.7mm | — |
Wheel Flop | 38.6mm | 38.6mm | 38.6mm | — |
Standover Height | 737mm | 737mm | 752mm | 752mm |
Tire to Pedal Spindle | 211mm 175 mm cranks | 211mm 175 mm cranks | 237mm 175 mm cranks | 237mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 163mm 175 mm cranks | 163mm 175 mm cranks | 163mm 175 mm cranks | 163mm 175 mm cranks |
Jeffsy 27 AL Build
M | M | L | L | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Width Max | 2.6mm | 2.6mm | 2.6mm | — |
Tire Outer Diameter | 705.9mm | 705.9mm | 705.9mm | 705.9mm |
Bike Length with Tires | 1874.9mm | 1874.9mm | 1905.9mm | 1905.9mm |
Crank Length | 175mm | 175mm | 175mm | 175mm |
Handlebar Width | 780mm | 780mm | 780mm | 780mm |
Stem Length | 50mm | 50mm | 50mm | 50mm |
Published Sizing Recommendations
Height | 5 ft 3 in to 5 ft 7 in | 5 ft 3 in to 5 ft 7 in | — | — |
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:geometrygeeks.bike, 99spokes.com