Ritchey WCS Logic EC34/28.6 - EC34/30 Headset

Item number: 28893

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to the delivery destination: USA

black/EC34/28.6 - EC34/30
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Ritchey WCS Logic EC34/28.6 - EC34/30 Headset - black/EC34/28.6 - EC34/30
Ritchey WCS Logic EC34/28.6 - EC34/30 Headset - black/EC34/28.6 - EC34/30
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.84 / 5.00
Use: for 1 1/8" upper and lower head tubes combined with standard 1 1/8" forks.


Application: Gravel
Upper Cup: 1 1/8"
Lower Cup: 1 1/8"
Steerer Tube: 1 1/8"
Design: external cup (EC)

Technical Information:

Material: aluminium
Bearings: cartridge bearings (titanium-coated)
Upper Outer Diameter: 34 mm
Upper Inner Diameter: 28.6 mm
Lower Outer Diameter: 34 mm
Lower Inner Diameter: 30 mm


- Series: WCS (World Championship Series)
- Sealed bearings
- Total Stack Height: 28.3 mm
- Bearing Angle: 45°

Standardized Headset Identification System (S.H.I.S.):

The Standardized Headset Identification System (S.H.I.S.) creates a common language for describing modern bicycle headsets. The system provides comprehensive and scalable headset fitment information in a standardized format; making it easy to communicate headset requirements based on frame and fork interfaces. The system addresses the critical interface dimensions required to fit a fork to a frame, as well as bearing location/cup type. To determine fit, four dimensions are needed: (1) stem-clamp diameter of fork, (2) crown-race seat diameter of fork, (3) head-tube top inside diameter, and (4) head-tube bottom inside diameter. Bearing location and cup-type are identified as (a) external cup (EC), (b) semi-integrated or zero stack (ZS), or (c) integrated (IS).


EC: Bearings contained within cups that are located outside of the frame (external cup).
ZS: Bearings contained within pressed-in cups where the cup and bearings rest inside the frame (zero stack).
IS: Bearings that fit directly into a bonded or machined interface that is integrated into the frame (integrated).

Manufacturer Part Number:



- 1 x Ritchey WCS Logic upper cup incl. bearings
- 1 x Ritchey WCS Logic lower cup incl. bearings
- 1 x top cap
- 1 x Ahead cap with bolt and star nut
- 1 x compression ring
- 1 x crown race


  • black/EC34/28.6 - EC34/30: 103 g


in stock 2 to 7 days up to 10 days Out of stock inform me
  • black/EC34/28.6 - EC34/30

Customer Reviews (4)


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Customer Reviews (4)


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by Adrian v.  on 14.06.2016
verified purchase
3 of 3 customers found this review helpful.

Gut gemachter, wertiger Steuersatz. Verbaue (und fahre) den Ritchey WCS-Steuersatz an fast all meinen Rädern. Bei korrekter Montage butterweicher Lauf. Noch nie ein Problem gehabt. Kann diesen Steuersatz uneingeschränkt empfehlen!

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by Ulf K.  on 08.02.2016
verified purchase
1 of 1 customers found this review helpful.

Kann nur gutes sagen, läuft seit Jahren am Stadtrad einwandfrei bei jedem Wetter, normaler Wartungsaufwand, bisher keine erhöhten Verschleißanzeichen. Läuft wie am ersten Tag!

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by Adrian v.  on 30.10.2015
verified purchase

Top Qualität für einen noch recht passablen Preis.

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by Philipp M.  on 15.05.2013
1 of 1 customers found this review helpful.

Ich kann die schlechte Bewertung nicht bestätigen. Ich habe ihn jetzt 3 Jahre an meinem Stadtrad bei Schnee, Regen und was sonst noch so von oben kommt, gefahren. Außerdem bin ich ihn mal ein halbes Jahr bei Rennen und im Training gefahren und er läuft völlig unbeeindruckt und einwandfrei wie am ersten Tag. Ich würde ich wieder kaufen.

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