Quick Summary
The BNVB alloy bike seatpost shim is a 100 mm aluminum reducing sleeve for switching a seatpost from 27.2 mm to 30.4 mm. It is a simple adapter piece for matching seatpost and frame seat tube sizes.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | BNVB – helps identify the exact adapter. |
| Product type | Bike seatpost shim – used as a reducing sleeve. |
| Length | 100 mm – check that the length suits your seatpost and frame setup. |
| Size change | 27.2 to 30.4 mm – confirms the adapter is for this size switch. |
What to Compare Before Buying
- Seatpost size: This adapter is for a 27.2 mm seatpost. Compare that with the seatpost you plan to use.
- Frame seat tube size: The stated switch is to 30.4 mm. Compare that with the seat tube opening on the bike frame.
- Length: The shim is 100 mm long. Check that this length works with your seatpost insertion setup.
Compatibility, Size and Fit
Check the outside diameter of the seatpost and the inside diameter of the bike frame seat tube before choosing this shim. The product is intended for a 27.2 to 30.4 mm size change, so the selected bike must match those measurements.
Before You Decide
Confirm the 27.2 mm to 30.4 mm size change, the 100 mm length, and the seatpost and seat tube measurements before choosing an offer.
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