The Tange Seiki Terious ZST2 is a durable, semi-integrated (Zero Stack) threadless headset designed for 1-1/8" steerer tubes. It is widely recognized for its "Fully Sealed Mechanism," which protects the internal components from dirt and moisture, making it a reliable choice for daily commuting or mountain biking.
Features
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Zero Stack (ZS) System: This design places the bearing cups inside the head tube, allowing for a lower front end and increased front-end stiffness compared to traditional external headsets.
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Durability: Constructed from high-tension steel rather than alloy, it is built to withstand heavy use and high-stress riding.
-
Fully Sealed Mechanism: Even though it uses ball retainers rather than cartridge bearings, it features a seal system (including a pre-assembled seal ring and lower seal ring) to prolong the life of the grease and bearings.
-
Easy Installation: Features a Nylon/Plastic compression ring for simple adjustment and fitment.
Specifications
| Feature | Details |
| Type | Semi-Integrated / Zero Stack (ZS) |
| Steerer Size | 1-1/8" (28.6 mm) |
| Material | High-tension steel (Cups and Top Cone) |
| Bearing Type | Ball retainer type (#350, 5/32" x 16 balls) |
| S.H.I.S. Upper | ZS44 / 28.6 |
| S.H.I.S. Lower | ZS44 / 30 |
| Stack Height | ~10.9 mm |
| Cup Diameter | 44 mm |
| Weight | Approximately 93g – 120g |
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The Tange Seiki Terious ZST2 is a durable, semi-integrated (Zero Stack) threadless headset designed for 1-1/8" steerer tubes. It is widely recognized for its "Fully Sealed Mechanism," which protects the internal components from dirt and moisture, making it a reliable choice for daily commuting or mountain biking.
Features
-
Zero Stack (ZS) System: This design places the bearing cups inside the head tube, allowing for a lower front end and increased front-end stiffness compared to traditional external headsets.
-
Durability: Constructed from high-tension steel rather than alloy, it is built to withstand heavy use and high-stress riding.
-
Fully Sealed Mechanism: Even though it uses ball retainers rather than cartridge bearings, it features a seal system (including a pre-assembled seal ring and lower seal ring) to prolong the life of the grease and bearings.
-
Easy Installation: Features a Nylon/Plastic compression ring for simple adjustment and fitment.
Specifications
| Feature | Details |
| Type | Semi-Integrated / Zero Stack (ZS) |
| Steerer Size | 1-1/8" (28.6 mm) |
| Material | High-tension steel (Cups and Top Cone) |
| Bearing Type | Ball retainer type (#350, 5/32" x 16 balls) |
| S.H.I.S. Upper | ZS44 / 28.6 |
| S.H.I.S. Lower | ZS44 / 30 |
| Stack Height | ~10.9 mm |
| Cup Diameter | 44 mm |
| Weight | Approximately 93g – 120g |