2025 BTR Fabrications Belter 650b/27.5 XL
Build
650B/27.5 in × 2.5 in
Insights
Very upright stack and reach vs trend of hardtail all-mountain/enduro mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 671.5mm |
| Reach | 470mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, Unknown | 420mm |
| Top Tube Length, Effective/Horizontal Unknown | 649.9mm |
| Top Tube Slope | 24.7deg |
| Head Tube Angle | 61.5deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 150mm |
| Bottom Bracket Drop | 60.5mm |
| Bottom Bracket Height | 295mm |
| Chainstay Length Horizontal | 420mm |
| Front-Center | 851.7mm |
| Front-Center Horizontal | 849.5mm |
| Wheelbase | 1269.5mm |
| Fork Offset/Rake | 42mm |
| Fork Length (Axle-To-Crown) | 554mm |
| Trail | 145.2mm very high |
| Mechanical Trail | 127.6mm |
| Wheel Flop | 60.9mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 326.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 125mm |
650b/27.5 Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 711mm |
| Bike Length with Tires | 1980.5mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://www.btr-fabrications.com/products/belter-frame/#frame-options