Quick Summary
The Ritchey Comp 2-Bolt Bike Seatpost is a bike seatpost with a 2-bolt saddle clamp, 25mm offset, and 27.2mm x 400mm sizing. It is described as a 6061 alloy seatpost, and the opening size check is the frame’s inside seat tube diameter.
The main buyer decision points here are fit, offset, and clamp style. This seatpost also includes a 100mm minimum insertion marking, which is useful when checking how far it must sit inside the frame.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | Ritchey. Useful for matching the correct model and finish across offers. |
| Model | Comp. This identifies the seatpost line. |
| Product type | 2-bolt bike seatpost. The clamp style affects saddle adjustment. |
| Size | 27.2mm x 400mm. Check frame diameter before choosing. |
| Offset | 25mm. This affects saddle setback position. |
| Material | 6061 alloy. A key specification for comparing the seatpost build. |
| Minimum insertion marking | 100mm. Helps confirm how much of the post must remain inside the frame. |
What to Compare Before Buying
- Seat tube diameter: This model is 27.2mm. Match that to the frame’s inside seat tube diameter.
- Seatpost length: The stated length is 400mm. Compare that with your frame and riding position needs.
- Offset: The 25mm offset changes saddle setback. Compare it with the position you want.
- Clamp style: The 2-bolt clamp supports saddle angle adjustment. Check that this is the style you want.
- Insertion depth: The 100mm minimum insertion marking is part of the fit check.
Before You Decide
Confirm that your frame takes a 27.2mm seatpost and that the 400mm length works with your setup. Check whether the 25mm offset matches the saddle position you want, and make sure the 100mm insertion marking fits your frame requirements.
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