The Tangeseiki Technoglide IS247 is a fully integrated headset designed for modern frames using a 1-1/4” lower steerer interface. It is engineered to deliver precise steering performance while maintaining a clean, integrated appearance within the head tube.

Fully Integrated Design: Built around a true integrated system, the IS247 sits directly inside the frame without external cups. This design reduces stack height, improves aesthetics and ensures accurate alignment between the frame and fork.

Lightweight Duraluminum Construction: The headset is manufactured from high-strength duraluminum alloy, offering an excellent balance of low weight and long-term durability. This construction helps maintain stiffness under load while supporting smooth, responsive handling.

Sealed Bearing System: It features a Campagnolo-sized 4T5 cartridge bearing on the upper and a Tange Seiki original 4T5 cartridge bearing sized for a 1-1/4” lower interface. The fully sealed mechanism protects the bearings from dirt and moisture, ensuring consistent performance with minimal maintenance.

Designed for riders who value smooth steering and dependable operation, the Technoglide IS247 delivers lasting performance and precise control in a compact, integrated format.

Features

• Fully Integrated IS Design: True integrated system sits directly in the frame, reducing stack height and delivering a clean, modern cockpit.
• Lightweight Duraluminum Construction: High-strength duraluminum alloy balances low weight with durability for smooth, responsive handling.
• Sealed 4T5 Bearing System: Campagnolo-sized 4T5 upper bearing and Tange Seiki 4T5 lower bearing ensure smooth, consistent rotation.
• Protection Against Contaminants: Fully sealed mechanism blocks dirt and moisture, extending bearing life with minimal maintenance.
• Built for Reliable Control: Designed to deliver precise steering and dependable performance in compact integrated setups.

Specifications

• Model: TGIS247
• Product Type: Fully Integrated Headset
• Intended Use: Road, Performance-Oriented Bicycles
• Headset Type: Threadless
• Upper Bearing: Sealed Cartridge Bearing (4T5, Campagnolo Size)
• Lower Bearing: Sealed Cartridge Bearing (4T5, 1-1/4")
• Steerer Size: 1-1/8" / 1-1/4"
• Material: Duraluminum Alloy
• Stack Height: 16.7 mm
• L1 (Upper Stack): 15.9 mm
• L2 (Lower Stack): 0.8 mm
• Weight: 101.0 g