Overfast Colnago Y1RS Carbon Fibre Ultralight Battery Port Cover - SRAM AXS

Complete the Build.

Designed exclusively for the Colnago Y1RS equipped with SRAM AXS wireless drivetrains, the 2026 Overfast Ultralight Battery Port Cover replaces the original battery port cover with an ultra-lightweight full carbon fibre alternative.

Weighing just 5g (±1g), it's engineered for riders who appreciate that the finest bike builds are defined by attention to every detail. Manufactured entirely from premium carbon fibre and supplied with a black titanium mounting bolt featuring a laser-etched OVERFAST logo, it's the perfect finishing touch for a truly uncompromising Y1RS.

Key Features

• New for 2026

• Designed exclusively for the Colnago Y1RS with SRAM AXS

• Ultra-lightweight construction

• Full carbon fibre design

• Weighs just 5g (±1g)

• Includes premium black titanium mounting bolt

• Laser-etched OVERFAST logo

• Direct replacement for the original battery port cover

• Precision engineered for a secure fit

• Available in Forged Carbon or 3K Carbon finishes

Full Carbon Construction

Manufactured entirely from premium carbon fibre, the Overfast Battery Port Cover delivers an exceptional combination of low weight, stiffness and premium finish.

Available in both Forged Carbon and 3K Carbon, it allows riders to match the finish to the rest of their Y1RS build while maintaining the clean, integrated appearance of the frame.

Precision Fit

Designed specifically for the Colnago Y1RS, the Overfast Battery Port Cover installs directly in place of the original component using the supplied black titanium mounting bolt.

The precision-moulded design ensures a secure fit while maintaining the sleek aerodynamic lines of the frame.

Premium Finishing Details

The smallest components often complete the best bike builds.

Every Battery Port Cover includes a lightweight black titanium fixing bolt, laser etched with the OVERFAST logo, adding another premium detail to one of the world's most advanced aero road bikes.

Technical Specifications

• Compatibility: Colnago Y1RS

• Drivetrain: SRAM AXS

• Weight: 5g (±1g)

• Material: Full Carbon Fibre

• Mounting Bolt: Black Titanium with laser-etched OVERFAST logo

• Finish Options:

  • Forged Carbon

  • 3K Carbon

Why We Stock It

The Overfast SRAM Battery Port Cover perfectly captures what the brand is about. Rather than accepting a standard finishing component, Overfast has re-engineered it using premium carbon fibre and titanium to create an ultra-lightweight replacement worthy of the Colnago Y1RS. It's another example of how thoughtful engineering and meticulous attention to detail can elevate an already exceptional bike.