Sidi Aeron XC Shoe

Description

Engineered for the Hardest Lines

The Sidi Aeron redefines XC performance through advanced construction and precision fit. The ripstop upper with rubber bumpers offers protection without added weight, while dual NUUN 001C dials and internal Firmor reinforcement ensure secure, responsive support. A fast-adapting instep and UNUM tongue deliver a pressure-free fit, complemented by a tool-free heel adjuster for fine-tuned stability. The sole, with stiffness index 11 and generous rubber coverage, offers powerful traction and efficient energy transfer.

Designed for Every Foot

Millennium Fit is Sidi's latest innovation in cycling shoes. The new generation of Sidi shoes are designed with a slightly wider shape, offering enhanced comfort and better adaptability for more riders.

Features:

• Stability meets airness – made for XC riders seeking lateral stability in a lightweight, ventilated structure that ensures consistent climate control
• Toughness made light – Ripstop® upper with rubber bumper offers high tear resistance and protection in a lightweight, durable structure
• Tailored fit made simple – adjustable instep connects to NUUN dials, shaping to the foot with an internal system for easy, secure fit
• Locked in – heel adjuster and Firmor X combine to stabilize the foot, providing a secure, unified fit through every pedal stroke
• Aero-built, power-tight, SIDI precision – NUUN 001C is a compact, aero aluminum dial with SIDI's handle system for fast, precise tension and maximum hold

Specs:

• Upper: Ripstop fabric with rubber bumpers – lightweight, tear-resistant, and protective
• Closure: Dual NUUN 001C aluminum dials – aerodynamic, precise, and secure fit control
• Instep: Adaptive instep linked to dials – molds to foot for a personalized fit
• Fit system: Firmor X internal support + tool-free heel adjuster – enhanced foot stability and alignment
• Tongue: UNUM Ergo anatomical tongue – relieves pressure for consistent comfort
• Outsole: X2FC full carbon with rubber lugs – stiffness index 11, built for grip, impact support, and efficient power transfer
• Cleat setup: Independent cleat adjustment for personalized positioning
• Replaceable parts: Heel pads and dials

Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for continental US customers (not applicable for AK, HI, APO, FPO) if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. Cleats may have been mounted leaving minor marks on the soles. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.