2024 TWITTER Bikes C4pro Base
- Category
- Performance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
48 | 510 | 540 | |
Stack | 518mm | 525mm | 539mm |
Reach | 373mm | 381mm | 382mm |
Stack to Reach Ratio | 1.39:1 | 1.38:1 | 1.41:1 |
Seat Tube Length, Unknown | — | 510mm | 540mm |
Top Tube Length, Effective/Horizontal Unknown | 516.7mm | 526.5mm | 536.5mm |
Top Tube Slope | — | 3.7deg | 2deg |
Head Tube Angle | 70.5deg | 71deg | 71deg |
Seat Tube Angle | 74.5deg | 74.5deg | 74.5deg |
Head Tube Length | 115mm | 120mm | 135mm |
Bottom Bracket Drop | 73mm | 73mm | 73mm |
Bottom Bracket Height | -59mm | 265mm | 265mm |
Chainstay Length | — | 406mm | 406mm |
Chainstay Length Horizontal | — | 399.4mm | 399.4mm |
Front-Center | — | 588.6mm | 594.4mm |
Front-Center Horizontal | — | 584mm | 589.9mm |
Wheelbase | — | 983.4mm | 989.3mm |
Fork Offset/Rake | — | 45mm | 45mm |
Fork Length, Unknown | — | 373mm | 373mm |
Trail | — — | 68.8mm high | 68.8mm high |
Mechanical Trail | — | 65mm | 65mm |
Wheel Flop | — | 21.2mm | 21.2mm |
Tire to Pedal Spindle | — 170 mm cranks | 80.6mm 170 mm cranks | 86.4mm 170 mm cranks |
Pedal Spindle to Ground Clearance | -229mm 170 mm cranks | 95mm 170 mm cranks | 95mm 170 mm cranks |
Base Build
48 | 510 | 540 | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 27mm | 27mm |
Tire Width Max | 28mm | — | — |
Tire Outer Diameter | 28mm | 676mm | 676mm |
Bike Length with Tires | — | 1659.4mm | 1665.3mm |
Published Sizing Recommendations
Height | — | 175 cm to 183 cm | 183 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:http://www.twitter-bikes.com/twbike/2143.html, -