Sidi AERON MTB Shoes - Black 2026

SIDI Aeron MTB Shoes: XC precision for the most demanding trails

The SIDI Aeron redefines XC performance standards through advanced construction and precision fit. Designed for riders who refuse to compromise between lightness and protection, it features an ultra-resistant Ripstop® fabric upper, complemented by rubber bumpers to tackle the steepest trails without adding unnecessary weight.

Firmor X Stability and High-Precision NUUN Closure

For responsive support, the Aeron combines Firmor X internal reinforcement with the new dual NUUN 001C aluminum closure system. These compact, aerodynamic dials allow for fast and precise tensioning. The adaptive instep, directly linked to the dials, molds the shoe to your foot shape for a "locked-in" fit without pressure points, even during explosive efforts.

Full Carbon Power and All-Terrain Traction

Equipped with the X2FC Full Carbon sole (stiffness index 11), the SIDI Aeron guarantees exceptional energy transfer. Its generous rubber lugs provide powerful traction during hike-a-bike sections, while Nexus Bridge technology ensures optimal structural balance. As with the brand's top-tier models, the heel retention device is tool-free adjustable for personalized rear-foot stability.

Why choose the SIDI Aeron?

• Ripstop® Upper & Protections: High tear resistance and impact protection.
• Dual NUUN 001C Dials: Micrometric aluminum closure, precise and robust.
• X2FC Carbon Sole: Level 11 stiffness with excellent ground grip.
• Firmor X Technology: Optimized lateral support for perfect XC stability.
• Heel Adjuster: Personalized foot lockdown for more efficient pedaling.

Technical characteristics

• Upper: Lightweight Ripstop fabric with protective rubber bumpers
• Closure: Dual aerodynamic NUUN 001C aluminum system
• Tongue: UNUM Ergo anatomical tongue for consistent comfort
• Support: Firmor X internal support and adaptive instep
• Outsole: X2FC Full Carbon with rubber lugs (stiffness index 11)
• Heel: Tool-free adjustable retention device
• Compatibility: 2-bolt MTB cleats (SPD)

Performance and stiffness indices

• Performance: 10 out of 10 (Designed for XC competition)
• Stiffness: 11 out of 12 (The perfect balance between power and shock absorption)

Sizing info: SIDI shoes run small. We recommend choosing one size larger than your usual shoe size.