Strummer HS-EC34-BT is an External Cup (EC) headset designed for frames with a 34 mm head tube diameter and a 1-1/8-inch threaded fork. This headset uses an sealed Angular Contact Bearing (ACB) to provide smooth, stable steering and greater resistance to dust and water.

The aluminum alloy with a glossy anodized finish combines light weight, good strength, and a clean appearance. This headset is compatible with a 25.4 mm diameter quill stem, making it suitable for bicycles with a classic threaded fork system.

The bearing can be replaced and serviced, making maintenance easier and extending the component's service life.

Strummer HS-EC34-BT Specifications

Headset Standard
1-1/8" Threaded External Cup

Headset Type
External Cup (EC)

SHIS Standard
EC34/28.6 | EC34/30

Frame Compatibility
Head Tube Diameter: 34 mm

Fork Compatibility
Threaded Fork Steerer: 1-1/8 inch x 26T (28.6 mm)

Crown Race Diameter
30 mm

Crown Race
Included (Removable)

Stem Compatibility
Quill Stem Diameter: 25.4 mm

Total Stack Height
37.5 mm

Top Stack Height
25.5 mm

Bottom Stack Height
12 mm

Bearing Type
Angular Contact Bearing (ACB)

Bearing Size
ACB Ø41/30.15 mm x 6.5 mm Height × 45°

Bearing
Replaceable & Serviceable

Material
Aluminum Alloy

Finish
Glossy Anodized Finish

Product Weight
±100 grams

Compatibility Notes

This headset is designed for frames with a 34 mm head tube and a 1-1/8-inch threaded fork with a 30 mm crown race.
Make sure the frame and fork dimensions are compatible before purchasing or installing.