Timeless charm
The Basso story starts with the welding of a steel frame!
A new approach
Not content to take the current technology of the time as the Basso standard, Alcide Basso set forth to study, investigate and innovate new methods of construction, material preparation and frame building.
Tradition
That tradition has been maintained throughout Basso’s history and the Viper model represents all that was learned during that long journey that looked to perfect steel frame construction.
The experience in welding of our technicians are our best tool in obtaining lighter weights and major resistance to torsion and flexion.
The frame and fork are welded with lugs, tubes are internally tapered for extreme performances and aesthetical beauty.
Made by hand,
made in Italy
Made by hand, made in Italy, made by Basso the Viper blends traditional looks and style with the capability to build modern componentry, thus creating an elegant, sophisticated bike that begs for speed yet offers a ride quality without comparison.
Geometry
Every good bike fit starts with choosing the correct frame size for you. This will allow you to benefit best of the bike’s performance and comfort for an efficient riding position.
| 48 | 50 | 52 | 54 | 56 | 58 | 60 | |
|---|---|---|---|---|---|---|---|
| Seat Tube (A1) | 480 mm | 500 mm | 520 mm | 540 mm | 560 mm | 580 mm | 600 mm |
| Top Tube (B) | 510 mm | 520 mm | 535 mm | 545 mm | 560 mm | 570 mm | 580 mm |
| Seat Tube Angle (C) | 74,5° | 74° | 73,5° | 73,5° | 73° | 73° | 73° |
| Steering Tube Angle (D) | 71,5° | 72,5° | 72,5° | 73° | 73° | 73° | 73° |
| Chain-stay Length (E) | 406 mm | 407 mm | 409 mm | 411 mm | 411 mm | 413 mm | 415 mm |
| BB to Fork Length (F) | 570 mm | 572 mm | 583 mm | 584 mm | 594 mm | 599 mm | 609 mm |
| Headtube (H) | 90 mm | 104 mm | 120 mm | 136 mm | 155 mm | 174 mm | 194 mm |
