2026 RSD Bikes MiddleChild V3 Base Small
Build
650B/27.5 in × 2.8 in
Insights
Average stack and reach vs trend of hardtail cross-country mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 614mm |
| Reach | 420mm |
| Stack to Reach Ratio | 1.46:1 |
| Seat Tube Length, C-T | 395mm |
| Top Tube Length, Effective/Horizontal HT Top | 585mm |
| Top Tube Slope | 24deg |
| Head Tube Angle | 64.5deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 40mm |
| Bottom Bracket Height | 323.1mm |
| Chainstay Length Horizontal | 415mm |
| Front-Center | 749.1mm |
| Front-Center Horizontal | 748mm |
| Wheelbase | 1163mm |
| Fork Offset/Rake | 51mm |
| Fork Length, Unknown | 551mm |
| Trail | 116.7mm very high |
| Mechanical Trail | 105.3mm |
| Wheel Flop | 45.3mm |
| Standover Height | 690mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 216mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 153.1mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.8in |
| Tire Outer Diameter | 726.2mm |
| Bike Length with Tires | 1889.2mm |
| Stem Length | 50mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | Aluminum |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 155 cm to 170 cm |
Source:www.rsdbikes.com