Tacx Ciro carbon bottle cage, Matte Black, ultralight 29 g with reinforced clamp

The Tacx Ciro Bottle Cage is an ultralight, matt-black carbon-and-glass-fiber cage engineered for secure bottle retention with just 29 g of weight.

Compact, low-profile and finished in a matte black that blends with any frame, the Ciro pairs a carbon shell with a glass-fiber core to balance stiffness and resilience. Its reinforced carbon contact points focus clamping where it matters, so bottles stay put without bulky material. The minimalist silhouette keeps weight down and appearance unobtrusive while providing reliable function for road, gravel and commuter bikes.

How does the Tacx Ciro keep a bottle secure during rough rides?

The Ciro uses a reinforced carbon shell at the clamp area to concentrate grip where the bottle is most likely to move. The combination of a rigid outer shell and a slightly compliant glass-fiber core creates a firm hold that resists bounce without overly tight insertion force.

• Reinforced carbon at contact points for targeted clamping
• Glass-fiber core provides controlled flex for consistent retention
• Minimal geometry reduces leverage that can eject bottles

Will this cage fit different bottle sizes and shapes?

The Ciro’s open, tapered profile accepts common road and MTB bottles, plus many insulated bottles with standard diameters. Its design favors a secure mid-to-upper grip rather than a one-size-fits-all squeeze, so very oversized or nonstandard bottles may feel tighter or need a different cage.

• Tapered opening accommodates standard cycling bottles
• Slim interior suits narrow bottles and many insulated models
• Not intended for extremely wide or irregularly-shaped containers

How light and durable is the Ciro compared with other cages?

At 29 g the Ciro sits among the lighter cages available, achieved by pairing a carbon outer shell with a glass-fiber core that reduces material without sacrificing necessary stiffness. The reinforced shell at the clamp points preserves durability where loads are highest.

• Total weight: approximately 29 grams for reduced rotational mass
• Carbon shell for surface stiffness and impact resistance
• Glass-fiber core lowers weight while providing controlled flex

How easy is installation and compatibility with bike frames?

Installation follows the standard two-bolt bottle cage mounting pattern found on most frames and seat tubes. The Ciro’s slim footprint keeps it clear of narrow downtubes and fits cleanly on bikes with limited space.

• Standard two-bolt mounting (M5 spacing) for universal compatibility
• Slim profile reduces interference with compact frames
• Matt black finish blends with most paint schemes

Who is this for? The Tacx Ciro Bottle Cage is aimed at cyclists who want a nearly invisible, ultralight bottle cage that still grips reliably: road racers chasing grams, gravel riders who need durable retention, and commuters who prefer a low-profile look. If you regularly use very wide or uniquely shaped bottles, test fit first; otherwise the Ciro is a strong, lightweight choice for most modern bikes.