2023 Radical Bicycle Co. Grim Ripper 27.5 Tukt Regular
Build
650B/27.5 in × 2.4 in
Insights
Somewhat aggressive stack and reach vs trend of hardtail trail mtb bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 610mm |
| Reach | 455mm |
| Stack to Reach Ratio | 1.34:1 |
| Seat Tube Length, C-T | 400mm |
| Top Tube Length, Effective/Horizontal HT Top | 601mm |
| Top Tube Slope | 22deg |
| Head Tube Angle | 63.5deg |
| Seat Tube Angle | 77deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 55mm |
| Bottom Bracket Height | 298mm |
| Chainstay Length | 420mm |
| Chainstay Length Horizontal | 416.4mm |
| Front-Center | 782.8mm |
| Front-Center Horizontal | 780.9mm |
| Wheelbase | 1197.3mm |
| Fork Offset/Rake | 44mm |
| Fork Length, Unknown | 522mm |
| Trail | 126.8mm very high |
| Mechanical Trail | 113.5mm |
| Wheel Flop | 50.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 259.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 128mm |
27.5 Tukt Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 705.9mm |
| Bike Length with Tires | 1903.2mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 130mm |
| Suspension Sag | 0% |
| Frame Material | Steel |
| Fork Material | N/A |
| Brake Type | Disc |
| Features | Single-speed capable |
Published Sizing Recommendations
| Height | 5 ft 5.5 in to 5 ft 11.5 in |
Source:https://radicalbicycleco.com/products/grim-ripper