Tange-Seiki

Terious STR Headset - EC34/28.6 Upper, EC34/30 Lower, Satin Silver

The Tange-Seiki Terious STR Headset delivers smooth, consistent steering performance with the reliability riders expect from one of cycling’s most trusted component makers. Built from durable high-tensile steel, it’s designed to withstand demanding conditions while maintaining precise handling. The fully sealed mechanism keeps out dirt and moisture, reducing maintenance and extending service life—ideal for riders who value long-term performance and low upkeep.

With an EC34/28.6 upper and EC34/30 lower configuration, this headset fits standard 34mm head tubes and 1-1/8" straight steerer forks, making it a versatile option for a wide range of road, touring, or mountain bikes. Its compact stack height also helps maintain a clean, balanced front-end profile.

• Durable high-tensile steel construction built for long-term reliability
• Fully sealed design keeps out contaminants for smoother performance
• Fits 34mm straight head tubes and 1-1/8" straight steerer forks
• #800 upper and lower bearings for consistent steering feel
• Total stack height: 23.4mm (12.1mm upper / 11.3mm lower)
• Classic satin silver finish complements a wide range of builds