Ritchey Logic EC34/28.6 - EC34/30 Threaded Headset

Item number: 28885
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Ritchey Logic EC34/28.6 - EC34/30 Threaded Headset - black/EC34/28.6-26tpi - EC34/30
Ritchey Logic EC34/28.6 - EC34/30 Threaded Headset - black/EC34/28.6-26tpi - EC34/30
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.9 / 5.00
Use: for 1 1/8” upper and lower head tubes combined with standard 1 1/8" forks.

Specifications:


Application: Road, Cross Country
Upper Cup: 1 1/8"
Lower Cup: 1 1/8"
Pitch: 26 tpi
Steerer Tube: 1 1/8"
Design: external cup (EC)

Technical Information:


Material: steel (CrMo), composite
Bearings: ball bearing
Upper Outer Diameter: 34 mm
Upper Inner Diameter: 28.6 mm
Lower Outer Diameter: 34 mm
Lower Inner Diameter: 30 mm
Top Cap: 36.7 mm

Features:


- 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).

Nomenclature:


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).

Factory Numbers:


black: 33-230-191
silver: 33000877002

Contents:


- 1 x Ritchey Logic upper cup incl. bearings
- 1 x Ritchey Logic lower cup incl. bearings
- 2 x nut
- 2 x circlips
- 1 x compression ring
- 1 x crown race


Models:

in stock 2 to 7 days up to 10 days up to 20 days
  • black/EC34/28.6 - EC34/30
    9.20€
  • silver/EC34/28.6 - EC34/30
    12.56€

Customer Reviews (2)

5

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Customer Reviews (2)

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by cosmin r.  on 13.08.2019
verified purchase

I have used these on my 30y old MTB for almost 3 years in all conditions without any problems, they are the best you can get when it comes to price quality ratio.

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