Box One Carbon Sealed Integrated 1.5" Tapered Headset

Product Overview

The Box One Carbon Sealed Integrated 1.5" Tapered Headset is a sealed system built for tapered steerer tubes with premium bearing and material specifications. Featuring titanium-nitride coated 45×45 bearings, carbon fiber top cover, and an expander plug design, it delivers low friction performance with corrosion resistance. An included adapter allows compatibility with straight 1 1/8-inch steerer tubes.

Key Features

• Titanium-nitride coated bearings - Coating reduces friction coefficient, increases corrosion resistance, and extends bearing life compared to uncoated steel
• 45×45 bearing angle - Geometry optimized for BMX geometry and load angles, providing responsive steering feel and predictable handling
• Sealed bearing cartridges - Protects internal races from moisture, dirt, and salt contamination in varied riding conditions
• Carbon fiber top cover - Reduces weight while providing protection and visual distinction without structural compromise
• CNC-machined alloy top cap - Precision-manufactured with Box logo cutouts for weight reduction and consistent clamping surface
• Expander plug design - Eliminates need for star nut, simplifies installation, and works with all 1 1/8-inch steerer tubes including carbon fiber
• Split crown race - Two-piece design allows tool-free installation and removal from fork crowns without forcing or risk of damage

Technical Specifications

• Bearing type: Sealed, titanium-nitride coated 45×45
• Headset class: Integrated
• Steerer tube: 1 1/8" to 1.5" tapered
• Frame compatibility: IS 42/28.6 (lower) and IS 52/40 (upper) with tapered 1.5" steerer
• Alternative (with adapter): IS 52/30 for straight 1 1/8-inch steerer tubes
• Top cap material: CNC-machined alloy with anodized aluminum bolt
• Expander plug: Gold anodized aluminum
• Top bearing cover: Carbon fiber
• Weight: 107 grams (3.8 oz) standard | 111 grams (3.9 oz) with adapter
• Recommended torque: 9-10 Nm (expander) | 1.5 Nm (top cap)

Compatibility and Ideal Use Cases

Designed for frames and forks with tapered 1.5" steerer tubes (IS 52/40 upper, IS 42/28.6 lower). Standard version fits tapered geometry exclusively. Adapter allows use with straight 1 1/8-inch steerer tubes on compatible frames. Sealed construction makes it ideal for all riding conditions-street, park, and racing environments. Recommended for riders prioritizing smooth steering response, low maintenance, and corrosion resistance.