2025 Esker Cycles Hayduke Base
- Category
- Hardtail Trail MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Suspension
- 120mm fork travel, 30% sag
- Features
- Disc brake, Single-speed capable
Geometry
S1/SM | S2/MD | S3/LG | S4/XL | |
Stack | 615mm | 620mm | 630mm | 645mm |
Reach | 420mm | 450mm | 470mm | 500mm |
Stack to Reach Ratio | 1.46:1 | 1.38:1 | 1.34:1 | 1.29:1 |
Seat Tube Length, C-T | 380mm | 435mm | 485mm | 530mm |
Top Tube Length, Effective/Horizontal HT Top | 597mm | 626mm | 649mm | 683mm |
Top Tube Slope | 25.5deg | 19.5deg | 15.2deg | 11.9deg |
Head Tube Angle | 67.5deg | 67.5deg | 67.5deg | 67.5deg |
Seat Tube Angle | 74deg | 74deg | 74deg | 74deg |
Head Tube Length | 105mm | 110mm | 120mm | 140mm |
Bottom Bracket Drop | 65mm | 65mm | 65mm | 65mm |
Bottom Bracket Height | 312mm | 312mm | 312mm | 312mm |
Chainstay Length | 440mm | 440mm | 440mm | 440mm |
Chainstay Length Horizontal | 435.2mm | 435.2mm | 435.2mm | 435.2mm |
Front-Center | 697.9mm | 727.7mm | 750.7mm | 785.5mm |
Front-Center Horizontal | 694.8mm | 724.8mm | 747.8mm | 782.8mm |
Wheelbase | 1130mm | 1160mm | 1183mm | 1218mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 44mm |
Fork Length (On-Axis) | 495mm | 495mm | 495mm | 495mm |
Trail | 108.6mm very high | 108.6mm very high | 108.6mm very high | 108.6mm very high |
Mechanical Trail | 100.3mm | 100.3mm | 100.3mm | 100.3mm |
Wheel Flop | 38.4mm | 38.4mm | 38.4mm | 38.4mm |
Tire to Pedal Spindle | 150.8mm 170 mm cranks | 180.7mm 170 mm cranks | 203.6mm 170 mm cranks | 238.5mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 142mm 170 mm cranks | 142mm 170 mm cranks | 142mm 170 mm cranks | 142mm 170 mm cranks |
Base Build
S1/SM | S2/MD | S3/LG | S4/XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.6in | 2.6in | 2.6in | 2.6in |
Tire Width Max | 3in | 3in | 3in | 3in |
Tire Outer Diameter | 754.1mm | 754.1mm | 754.1mm | 754.1mm |
Bike Length with Tires | 1884.1mm | 1914.1mm | 1937.1mm | 1972.1mm |
Stem Length | 50mm | 50mm | 50mm | 50mm |
Published Sizing Recommendations
Height | 5 ft 3 in to 5 ft 7 in | 5 ft 6 in to 5 ft 10 in | 5 ft 9 in to 6 ft 1 in | 6 ft 0 in to 6 ft 4 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
Hardtail Trail MTBSource:https://eskercycles.com/pages/hayduke