Hammer TH-877
by FSA
FSA Hammer TH-877 – 1-1/8'' External Threadless Headset
Description
The Hammer TH-877 is a robust, heavy-duty external headset built for riders who need reliability and long service life.
It features a 12 mm deep-cup steel design, combined with a durable nylon top cover for added protection against dirt and moisture.
Oversized lower bearings improve load capacity, making this headset a great choice for MTB, commuting, touring, and urban bikes.
Specs
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Cup depth: 12 mm “Deep Cup” design
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Upper bearings: 5/32'' × 20 caged ball
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Lower bearings: 3/16'' × 20 oversized caged ball
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Stack height: 24.7 mm
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Headset weight: 149 g
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Cups: Forged and CNC-machined steel
Attributes
Bearing Grade: Heavy duty caged ball
Crown Race Diameter: 30 mm
Lower Cup: 34 mm
Headset Type: External, Threadless
Upper Cup: 34 mm
Headset Weight: 149 g
Primary Color: Black
S.H.I.S.: EC34/28.6 | EC34/30
Steerer Tube: 1-1/8''
Stack Height: 24.7 mm
Headset Position: Complete
SHIS Upper: EC34/28.6
SHIS Lower: EC34/30