2025 OnebyESU JFF #503 OBS-R11 fork
- Category
- Performance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Carbon/Composite
- Features
- Rim brake
Geometry
460mm | 480mm | 500mm | 520mm | 540mm | 560mm | 580mm | |
Stack | 485.6mm | 487.3mm | 500.3mm | 520mm | 538.1mm | 557.6mm | 576.7mm |
Reach | 355.8mm | 360.7mm | 362mm | 366mm | 375.3mm | 379.2mm | 383.2mm |
Stack to Reach Ratio | 1.36:1 | 1.35:1 | 1.38:1 | 1.42:1 | 1.43:1 | 1.47:1 | 1.5:1 |
Seat Tube Length, C-T | 460mm | 480mm | 500mm | 520mm | 540mm | 560mm | 580mm |
Top Tube Length, Effective/Horizontal HT Top | 495mm | 505mm | 515mm | 525mm | 545mm | 555mm | 565mm |
Top Tube Slope | 5.1deg | 3.1deg | 2.5deg | 2.5deg | 2.5deg | 2.5deg | 2.4deg |
Head Tube Angle | 71deg | 71.5deg | 72deg | 72.5deg | 72.5deg | 73deg | 73deg |
Seat Tube Angle | 74deg | 73.5deg | 73deg | 73deg | 72.5deg | 72.5deg | 72.5deg |
Head Tube Length | 80mm | 80mm | 92mm | 110mm | 130mm | 148mm | 168mm |
Bottom Bracket Drop | 70mm | 70mm | 69mm | 69mm | 68mm | 68mm | 68mm |
Bottom Bracket Height | 269mm | 269mm | 270mm | 270mm | 271mm | 271mm | 271mm |
Chainstay Length | 407mm | 407mm | 408mm | 408mm | 410mm | 410mm | 410mm |
Chainstay Length Horizontal | 400.9mm | 400.9mm | 402.1mm | 402.1mm | 404.3mm | 404.3mm | 404.3mm |
Front-Center | 559.3mm | 560.6mm | 559mm | 561.8mm | 576.9mm | 579.9mm | 589.7mm |
Front-Center Horizontal | 554.9mm | 556.2mm | 554.8mm | 557.5mm | 572.9mm | 576mm | 585.8mm |
Wheelbase | 955.8mm | 957.1mm | 956.9mm | 959.6mm | 977.2mm | 980.3mm | 990.1mm |
Fork Offset/Rake | 53mm | 53mm | 50mm | 47mm | 47mm | 45mm | 45mm |
Fork Length (On-Axis) | 366mm | 366mm | 366mm | 366mm | 366mm | 366mm | 366mm |
Trail | 60.7mm mid/​neutral | 57.5mm mid/​neutral | 57.6mm mid/​neutral | 57.6mm mid/​neutral | 57.6mm mid/​neutral | 56.6mm mid/​neutral | 56.6mm mid/​neutral |
Mechanical Trail | 57.4mm | 54.6mm | 54.8mm | 54.9mm | 54.9mm | 54.1mm | 54.1mm |
Wheel Flop | 18.7mm | 17.3mm | 16.9mm | 16.5mm | 16.5mm | 15.8mm | 15.8mm |
Standover Height | 720mm | 734.4mm | 752.3mm | 771.7mm | 790.7mm | 810mm | 829.2mm |
Tire to Pedal Spindle | 50.3mm 170 mm cranks | 51.6mm 170 mm cranks | 50mm 170 mm cranks | 52.8mm 170 mm cranks | 67.9mm 170 mm cranks | 70.9mm 170 mm cranks | 80.7mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 99mm 170 mm cranks | 99mm 170 mm cranks | 100mm 170 mm cranks | 100mm 170 mm cranks | 101mm 170 mm cranks | 101mm 170 mm cranks | 101mm 170 mm cranks |
OBS-R11 fork Build
460mm | 480mm | 500mm | 520mm | 540mm | 560mm | 580mm | |
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 | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm |
Tire Width Max | 30mm | 30mm | 30mm | 30mm | 30mm | 30mm | 30mm |
Tire Outer Diameter | 678mm | 678mm | 678mm | 678mm | 678mm | 678mm | 678mm |
Bike Length with Tires | 1633.8mm | 1635.1mm | 1634.9mm | 1637.6mm | 1655.2mm | 1658.3mm | 1668.1mm |
Published Sizing Recommendations
Height | 155 cm to 163 cm | 160 cm to 168 cm | 165 cm to 173 cm | 168 cm to 175 cm | 173 cm to 180 cm | 178 cm to 185 cm | 180 cm to 190 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
Performance RoadSource:https://onebyesu.tokyo-san-esu.com/category/frames/jff_503.html, https://onebyesu.tokyo-san-esu.com/category/forks/r11.html