TiNE × Eclos Titanium Headset Top Cap 4.2g | Darimo Compatible Ultra-Light Road Bike Stem Cap

TiNE × Eclos Ultra-Light Titanium Headset Top Cap

Upgrade your lightweight road bike build with the TiNE × Eclos Titanium Headset Top Cap, designed for riders who care about every gram.

Featuring a distinctive topology-inspired skeletal structure, this ultra-light headset top cap removes unnecessary material while maintaining the essential structure required for headset preload adjustment.

The lightest version weighs approximately 4.2g, making it an ideal upgrade for premium lightweight road bikes, custom builds, and selected Darimo handlebar / stem setups.

Key Features

• Ultra-Light Design – Lightest version weighs approximately 4.2g
• TC4 Titanium Construction – Made from high-strength Ti-6Al-4V titanium alloy
• Topology-Inspired Structure – Lightweight skeletal design with a distinctive premium appearance
• Darimo Compatible – Suitable for selected Darimo handlebar and stem configurations
• Universal-Style Fit – Designed for compatible conventional road bike stem and headset systems
• Corrosion Resistant – Titanium provides excellent durability and long-term resistance to corrosion
• Premium Road Bike Upgrade – Ideal for weight-focused and high-end custom builds

TC4 Titanium Alloy

Made from TC4 titanium alloy (Ti-6Al-4V), this headset top cap offers an excellent strength-to-weight ratio while maintaining the premium appearance expected from high-end titanium bicycle components.

Compared with conventional steel or aluminum components, titanium provides a balance of low weight, strength, corrosion resistance, and durability.

Approx. 4.2g Lightweight Construction

The lightest configuration weighs approximately 4.2g.

This makes it particularly suitable for:

• Lightweight road bikes
• Climbing bike builds
• Darimo-equipped bikes
• Weight-weenie projects
• Custom superbike builds
• Titanium component upgrades

Actual weight may vary slightly depending on version, bolt specification, finish, and production tolerance.

Compatibility

Designed for selected Darimo and compatible standard road bike stem / headset configurations.

Because stem, compression plug, bolt, and headset dimensions may vary between brands and models, please check your original component dimensions before ordering.

If you are unsure about compatibility, please contact us with:

• Handlebar / stem model
• Original top cap photo
• Top cap diameter
• Bolt specification

We can help confirm compatibility before purchase.

Specifications

Brand: TiNE × Eclos
Product Type: Headset Top Cap / Stem Top Cap
Material: TC4 Titanium / Ti-6Al-4V
Design: Topology-Inspired Lightweight Structure
Reference Weight: From approx. 4.2g
Application: Road Bike / Lightweight Cockpit
Compatibility: Selected Darimo and compatible standard stem systems

Package Includes

• Titanium Headset Top Cap ×1
  

Important Note

The stated 4.2g refers to the lightest version or reference configuration.

Actual weight may vary slightly depending on bolt size, finish, and production tolerance.

Do not overtighten the headset top cap bolt. It is used to adjust headset bearing preload before the stem is fully secured.

Compatibility Check: Due to the complexity of original equipment manufacturer (OEM) parts' models and batches, there may be instances where this product is incompatible.

Upon receiving this product, please compare it with the OEM specifications to ensure compatibility before installation.

Torque Specifications: Install this product strictly according to the torque values specified in the OEM parts manual.Installation Issues: If you encounter any discrepancies with the OEM specifications or face difficulties at the initial stage of installation, stop immediately and contact customer service for assistance with returns or exchanges.

No Forced Installation: Do not force installation under any circumstances.Liability: Any damages resulting from forced installation or unauthorized modifications of this product (or its components) will be the sole responsibility of the buyer.

All products are photographed to accurately represent the colors you will see upon receipt.

Due to differences in lighting, angles, or screen settings, slight color variations may occur.

The actual product should be considered the standard.For "colored" and "blue" products, the coloring process may result in uneven color distribution, making each product unique.