2025 Rat Bikes Dad Rat Base Large
Build
700C/29 in × 2.25 in
Insights
Very aggressive stack and reach vs trend of progressive gravel bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 694.5mm |
| Reach | 520mm |
| Stack to Reach Ratio | 1.34:1 |
| Seat Tube Length, Unknown | 530mm |
| Top Tube Length, Effective/Horizontal Unknown | 719mm |
| Top Tube Slope | 15.5deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 170mm |
| Bottom Bracket Drop | 63mm |
| Bottom Bracket Height | 305.2mm |
| Chainstay Length Horizontal | 430mm |
| Front-Center | 802.4mm |
| Front-Center Horizontal | 799.9mm |
| Wheelbase | 1229.9mm |
| Fork Offset/Rake | 35mm |
| Fork Length (Axle-To-Crown) | 510mm |
| Trail | 103.8mm very high |
| Mechanical Trail | 96.9mm |
| Wheel Flop | 34.7mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 264.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 135.2mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.25in |
| Tire Outer Diameter | 736.3mm |
| Bike Length with Tires | 1966.2mm |
| Suspension Type | Rigid, suspension corrected |
| Bar Type | Flat Bar |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.btr-fabrications.com/products/dad-rat