2025 Salsa Cycles Blackthorn 145 C (High Default)
- Design
- Flat Bar, Full suspension
Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
SM | MD | LG | XL | |
Stack | 612mm | 621mm | 630mm | 639mm |
Reach | 452mm | 472mm | 492mm | 512mm |
Stack to Reach Ratio | 1.35:1 | 1.32:1 | 1.28:1 | 1.25:1 |
Seat Tube Length, C-T | 405mm | 430mm | 455mm | 480mm |
Top Tube Length, Effective/Horizontal Unknown | 589mm | 611mm | 633mm | 655mm |
Head Tube Angle | 63.9deg | 63.9deg | 63.9deg | 63.9deg |
Effective Seat Tube Angle, Seat Tube Top | 77.4deg | 77.4deg | 77.4deg | 77.4deg |
Head Tube Length | 100mm | 110mm | 120mm | 130mm |
Bottom Bracket Drop | 25mm | 25mm | 25mm | 25mm |
Bottom Bracket Height | 349.5mm | 349.5mm | 349.5mm | 349.5mm |
Chainstay Length | 432mm | 432mm | 432mm | 432mm |
Chainstay Length Horizontal | 431.3mm | 431.3mm | 431.3mm | 431.3mm |
Front-Center | 788.1mm | 812.1mm | 837.1mm | 861.1mm |
Front-Center Horizontal | 787.7mm | 811.7mm | 836.7mm | 860.7mm |
Wheelbase | 1219mm | 1243mm | 1268mm | 1292mm |
Fork Offset/Rake | 43mm | 43mm | 43mm | 43mm |
Fork Length (Axle-To-Crown) | 571mm | 571mm | 571mm | 571mm |
Trail | 135.6mm very high | 135.6mm very high | 135.6mm very high | 135.6mm very high |
Mechanical Trail | 121.8mm | 121.8mm | 121.8mm | 121.8mm |
Wheel Flop | 53.6mm | 53.6mm | 53.6mm | 53.6mm |
Standover Height | 746mm | 746mm | 747mm | 747mm |
Tire to Pedal Spindle | 248.6mm 165 mm cranks | 272.6mm 165 mm cranks | 292.6mm 170 mm cranks | 316.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 184.5mm 165 mm cranks | 184.5mm 165 mm cranks | 179.5mm 170 mm cranks | 179.5mm 170 mm cranks |
145 C (High Default) Build
SM | MD | LG | XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.5in | 2.5in | 2.5in | 2.5in |
Tire Outer Diameter | 749mm | 749mm | 749mm | 749mm |
Bike Length with Tires | 1968mm | 1992mm | 2017mm | 2041mm |
Crank Length | 165mm | 165mm | 170mm | 170mm |
Handlebar Width | 780mm | 780mm | 780mm | 780mm |
Stem Length | 40mm | 40mm | 40mm | 40mm |
Published Sizing Recommendations
Height | 157 cm to 170 cm | 168 cm to 180 cm | 178 cm to 191 cm | 188 cm to 201 cm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Full-suspension All-mountain/Enduro MTBSource:https://www.salsacycles.com/products/2025-blackthorn-145-c-xo-transmission