Venn VAR 77mm, disc brake, 24h


Venn rims are designed using extensive applied and theoretical aerodynamics know-how acquired during many years of work in wind tunnels, and at the cutting edge of computational fluid dynamics (CFD)

Every rim undergoes tyre inflation test, dimensional accuracy testing, and batch testing using X-ray imaging to identify any potential lamination issues before the rims are released for sale. Venn standards are among the highest in the industry

Patented filament winding process ensures precise and accurate carbon fibre layup – each fibre is oriented exactly as intended. This ensures that every rim achieves maximal strength and durability

The rim shapes are formed using metal mandrels, not bladders or foam. Metal mandrels deliver much higher tolerance and molding accuracy, and prevent fibre migration during curing

VAR filament winding process utilises slit tape towpreg to accurately lay up the carbon fibre in an automated, computer controlled process. The use of pre-impregnated carbon fibre tape allows the use of the latest resins that offer the optimal blend of high glass transition (Tg) temperature exceeding 240° C in testing , toughness and impact resistance. VAR rims can therefore be used in challenging conditions where extended braking periods are expected.

The profile of the Var 77 TCD rim was developed using the world first artificial intelligence driven process to offer the best aerodynamics when used with 25-28mm tyres. The external width of 30mm optimizes the airflow in combination with wider tyres, while the internal width of 21mm ensures that the wider tires achieve a stable, round profile.

The Var 77 rim profile achieves excellent aerodynamics in the real world conditions where the wind comes from different directions during your ride, not in a orderly manner as seen in wind tunnels. In fact the drag of Var 77 wheels falls in presence of cross winds

Manufacturing technology: Machine filament wound

Brake compatibility: Disc

Tyre type: tubeless/clincher

Size: 29″, 700c

Width: 30m external, 21mm internal

Depth: 77mm

Rider weight limit: 110kg

Hole count: 24h

ERD: 484.2mm



Venn Var 77 TCD filament wound tubeless clincher disc brake carbon rim, 24h.

Parallel filament wound full carbon tubeless clincher rims. 77mm profile, disc brake compatible

Additional information

Hole count

20, 24