2025 Salsa Cycles Blackthorn 145 C (High Default) XL
Build
700C/29 in × 2.5 in
Insights
Average stack and reach vs trend of full-suspension all-mountain/enduro mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 639mm |
| Reach | 512mm |
| Stack to Reach Ratio | 1.25:1 |
| Seat Tube Length, C-T | 480mm |
| Top Tube Length, Effective/Horizontal Unknown | 655mm |
| Head Tube Angle | 63.9deg |
| Effective Seat Tube Angle, Seat Tube Top | 77.4deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 25mm |
| Bottom Bracket Height | 349.5mm |
| Chainstay Length | 432mm |
| Chainstay Length Horizontal | 431.3mm |
| Front-Center | 861.1mm |
| Front-Center Horizontal | 860.7mm |
| Wheelbase | 1292mm |
| Fork Offset/Rake | 43mm |
| Fork Length (Axle-To-Crown) | 571mm |
| Trail | 135.6mm very high |
| Mechanical Trail | 121.8mm |
| Wheel Flop | 53.6mm |
| Standover Height | 747mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 316.6mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 179.5mm |
145 C (High Default) Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 749mm |
| Bike Length with Tires | 2041mm |
| Crank Length | 170mm |
| Handlebar Width | 780mm |
| Stem Length | 40mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | Unknown |
| Rear Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Published Sizing Recommendations
| Height | 188 cm to 201 cm |
Source:https://www.salsacycles.com/products/2025-blackthorn-145-c-xo-transmission