



The BiGolden4 is a tandem designed for professionals by professionals.
For our design team coming up with a new tandem wasn’t just a pleasure, but also a challenge, especially after the success of the BiGolden3.
DESIRE TO FLY


FLY ZEN
The BiGolden4 was developed for professionals by professionals. Its easy takeoff characteristics, excellent in-flight handling, and deceptively soft landing potential makes this a glider with qualities that stand out easily.
SOARING
The glider turns precisely and efficiently, and the force needed on the controls is notably lighter than on previous versions, making it a great soaring glider.
HIKE AND FLY
It’s easy takeoff characteristics make it a fine glider for mountain flying. Nonetheless the ‘Light’ version is even more adapted to hike-and-fly activities.
CROSS COUNTRY
The new design allows us a glider which is very stable in every phase of flight with very light brake controls and inputs. The new attachment points on the leading edge allow for easier and more comfortable takeoffs, and the new trim system allows us a slightly higher cruising speed.
FREESTYLE
The BiGolden4 is capable of accomplishing certain freestyle maneuvers like wing overs.
ACRO
This glider was not designed with acro in mind.
COMPETITION
This glider was not designed with competition in mind.










TECHNOLOGY
MATERIALS
DESIGN
Gradient is dedicated to using the highest quality materials in the construction of all our products in order to furnish the very best compromise between safety, weight, and longevity.
Leading edge……………………Skytex Everlast 42 g/m²
Upper surface……………Porcher Marine Skytex 38 g/m²
Lower surface…………..Porcher Marine Skytex 32 g/m²
Diagonals…………………….Skytex 32 g/m² et 40 g/m²
Lines
Top……………………..Liros Dyneema / Edelrid Aramid
Middle……………………………………….Edelrid Aramid
Low………………………………………….Liros Dyneema
Leading edge……………………Skytex Everlast 42 g/m²
Upper surface……………Porcher Marine Skytex 38 g/m²
Lower surface…………..Porcher Marine Skytex 32 g/m²
Diagonals…………………….Skytex 32 g/m² et 40 g/m²
Lines
Top……………………..Liros Dyneema / Edelrid Aramid
Middle……………………………………….Edelrid Aramid
Low………………………………………….Liros Dyneema












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