Strummer 1SI3181530 Semi-Integrated Headset

Strummer 1SI3181530 Semi-Integrated Headset

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Product Discontinued

Replacement for Polygon Trid CR Frameset.

3XX Series Strummer Headset.


ACB Bearing

Bearing Size: 41+51.9

Fork Steerer: 1-1/8+1-1/2

Headtube Inner / Outer Diameter: 44/50 or 55/61

Cap: Alloy

Cup: Alloy

Crown Race: Alloy

Stack Height: 12.9 mm

ZS44/28.6 │ ZS55/30

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Where can I Buy This?

You can get our products via our network of dealers and resellers. To locate the nearest store in your city or town, simply click the link provided below.


Innovation, Since Day One

Since our inception in 2008, we strive to make better products that can be depended on. Starting with our CAD technology. Our headsets removes  unnecessary clamping to fork axle whilst providing identical performance. We are also one of the first to sell convertable hubs in Indonesia.

Focus on The Details

We obsessively focus on the details. Improving by the millimeter. Adding the stiffness of our hubs by widening the flange our hubs, thus increasing wheelset stability and strength.



Upgrade kaliper pakai Strummer V2 Hydro Mechanical disc brake pakem sih..


Saya Strummer Holic. Dari saddle, handgrip, hub HM-380, botol minum, dll banyak lagi.

Trenggalek, Indonesia

Saya pengguna bottom bracket Strummer. Loncer dan enteng. Sangat memuaskan.

Wulida Janjang

Dengan harga yang ekonomis, tapi memberikan kualitas yang kompetitif di kelasnya.

Aanri Atama


Teguh Triyono

Pulley 11T, Pulley 14T, Hub Freehub HR-360. Terpasang di road bike dan sangat memuaskan.


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