2005 Koga Miyata Expression Base
- Category
- Commuter
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Fork
- Aluminum
- Suspension
- 45mm fork travel
- Features
- Rim brake
Very upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Suspension sag unknown Geometry may mis-represent actual riding geometry | Suspension sag unknown Geometry may mis-represent actual riding geometry | Suspension sag unknown Geometry may mis-represent actual riding geometry | Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
60cm | 50cm | 54cm | 57cm | 63cm | |
Stack | 632.7mm | — | — | — | — |
Reach | 372.8mm | — | — | — | — |
Stack to Reach Ratio | 1.7:1 | — | — | — | — |
Seat Tube Length, C-T | 600mm | 500mm | 540mm | 570mm | 630mm |
Top Tube Length, Effective/Horizontal Center | 590.6mm | — | — | — | — |
Top Tube Length, Actual C-C | 572mm | 539mm | 547mm | 565mm | 583mm |
Top Tube Slope | 6.5deg | — | — | — | — |
Head Tube Angle | 71deg | 70deg | 70deg | 71deg | 71deg |
Seat Tube Angle | 71deg | 72deg | 72deg | 71deg | 70deg |
Head Tube Length | 164mm | — | — | — | — |
Bottom Bracket Drop | 54mm | 54mm | 54mm | 54mm | 54mm |
Bottom Bracket Height | 289mm | 289mm | 289mm | 289mm | 289mm |
Chainstay Length | 450mm | 450mm | 450mm | 450mm | 450mm |
Chainstay Length Horizontal | 446.8mm | 446.8mm | 446.8mm | 446.8mm | 446.8mm |
Front-Center | 619mm | 613mm | 614mm | 614mm | 623mm |
Front-Center Horizontal | 616.3mm | 610.3mm | 611.3mm | 611.3mm | 621.3mm |
Wheelbase | 1063mm | 1057mm | 1058mm | 1058mm | 1068mm |
Fork Offset/Rake | 42mm | 42mm | 42mm | 42mm | 42mm |
Trail | 73.7mm high | 80.2mm very high | 80.2mm very high | 73.7mm high | 73.7mm high |
Mechanical Trail | 69.7mm | 75.3mm | 75.3mm | 69.7mm | 69.7mm |
Wheel Flop | 22.7mm | 25.8mm | 25.8mm | 22.7mm | 22.7mm |
Tire to Pedal Spindle | 106mm 170 mm cranks | 100mm 170 mm cranks | 101mm 170 mm cranks | 101mm 170 mm cranks | 110mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 119mm 170 mm cranks | 119mm 170 mm cranks | 119mm 170 mm cranks | 119mm 170 mm cranks | 119mm 170 mm cranks |
Base Build
60cm | 50cm | 54cm | 57cm | 63cm | |
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 |
Tire Width | 32mm | 32mm | 32mm | 32mm | 32mm |
Tire Outer Diameter | 686mm | 686mm | 686mm | 686mm | 686mm |
Bike Length with Tires | 1749mm | 1743mm | 1744mm | 1744mm | 1754mm |
Crank Length | 170mm | — | — | — | — |
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
CommuterSource:https://www.koga.com/en/service/brochures/2010-2001.htm