2005 Koga Miyata GentLux Base
- Category
- Performance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Rim brake
Geometry
58 | 52 | 54 | 56 | 60 | 63 | |
Stack | 567.7mm | — | — | — | — | — |
Reach | 396.4mm | — | — | — | — | — |
Stack to Reach Ratio | 1.43:1 | — | — | — | — | — |
Seat Tube Length, C-T | 580mm | 520mm | 540mm | 560mm | 600mm | 630mm |
Top Tube Length, Effective/Horizontal Center | 570mm | 535mm | 550mm | 565mm | 585mm | 600mm |
Top Tube Length, Actual C-C | 566.4mm | — | — | — | — | — |
Top Tube Slope | 1.3deg | — | — | — | — | — |
Head Tube Angle | 73deg | 71.5deg | 72deg | 72.5deg | 73deg | 73deg |
Seat Tube Angle | 73deg | 74deg | 74deg | 73.5deg | 73deg | 73deg |
Bottom Bracket Drop | 70mm | 70mm | 70mm | 70mm | 67.5mm | 65mm |
Bottom Bracket Height | 264mm | 264mm | 264mm | 264mm | 266.5mm | 269mm |
Chainstay Length | 406mm | 406mm | 406mm | 406mm | 406mm | 406mm |
Chainstay Length Horizontal | 399.9mm | 399.9mm | 399.9mm | 399.9mm | 400.4mm | 400.8mm |
Front-Center | 603mm | 594mm | 602mm | 606mm | 619mm | 632mm |
Front-Center Horizontal | 601.1mm | 590.1mm | 598.1mm | 604.1mm | 617.7mm | 633.2mm |
Wheelbase | 1001mm | 990mm | 998mm | 1004mm | 1018mm | 1034mm |
Fork Offset/Rake | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm |
Trail | 55.1mm mid/neutral | 64.3mm mid/neutral | 61.2mm mid/neutral | 58.1mm mid/neutral | 55.1mm mid/neutral | 55.1mm mid/neutral |
Mechanical Trail | 52.7mm | 61mm | 58.2mm | 55.4mm | 52.7mm | 52.7mm |
Wheel Flop | 15.4mm | 19.4mm | 18mm | 16.7mm | 15.4mm | 15.4mm |
Tire to Pedal Spindle | 99mm 170 mm cranks | 90mm 170 mm cranks | 98mm 170 mm cranks | 102mm 170 mm cranks | 115mm 170 mm cranks | 128mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks | 94mm 170 mm cranks | 96.5mm 170 mm cranks | 99mm 170 mm cranks |
Base Build
58 | 52 | 54 | 56 | 60 | 63 | |
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 |
Tire Width | 23mm | 23mm | 23mm | 23mm | 23mm | 23mm |
Tire Outer Diameter | 668mm | 668mm | 668mm | 668mm | 668mm | 668mm |
Bike Length with Tires | 1669mm | 1658mm | 1666mm | 1672mm | 1686mm | 1702mm |
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:Koga_Borchure_2005.pdf, Koga_Brochure_2005.pdf