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Setting
: B3F Seatpost installation and setting
Above is a video explaining the configuration and installation of B3F Seatpost.
Please take a look below to select the best bike seat to match your body type.
In order to get benefit from B3F seatpost, choosing the right bike seat to combine with B3F seatpost is very important.

High Flexibility Body Type (< 70 degrees) All of 1,2,3 are available |
1. Side view: Flat bike seat (Front view: Curved-upward bike seat) |
Moderate Flexibility Body Type (< 80 degrees) Both 2, 3 are available |
2. Side view: Curved-down bike seat (Front view: Flat bike seat) |
Low Flexibility Body Type (< 110 degrees) Only 3 is available |
3. Side view: Significantly Curved-down bike seat (Front view: Curved-down bike seat) |
Saddle recommended by B3F
Recommend | Not Recommend | |
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Bicycle saddles with less than 4-degrees slant |
Bicycle saddles with greater than 4-degrees slant
(But, triathlon is recommended) |
Restrictions
Aero Seatpotst | |
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The B3F can only be mounted on a circular seatpost setting. |
Tund Seat Mast Cap | |
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B3F is not compatible with Tund Seat Mast Cap. (ex: Trek Emonda, Domane) |
Diameter less than 27.2mm | |
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B3F can't be mounted on a bicycle with less than 27.2mm seatpost setting. (ex: Cannondale 25.2mm). On the other hand, an adaptor(shim) will be required if the bicycle has greater than 27.2mm seatpost setting. |
Specification
: Details of B3F Seatpost
Specification | |
---|---|
Diameter | 27.2mm (Standard) / 25.4mm (Brompton) |
Offset | 0mm (Zero setback) / 20mm (Setback) / 0mm (Brompton) |
(From the Bottom to the Saddle Rail) Total Length | 350mm (Standard) / 80mm (Brompton) |
Tube Length | 305mm (Standard) |
Width | 55mm |
Height | 70mm |
Weight | 278g (Standard) / 198g (Brompoton) |
Material | |
---|---|
Seatpost Tube | UD Carbon |
Brompton Pentaclip Main Frame | Hard Anodized CNC Alloy |
Formega | Elastic Rubber |
Saddle-Rail Plate | Hard Anodized CNC Alloy |
Bolt | Titanium (Grade 5) |
Nut | Stainless steel |
* All parts are 100% manufactured in Korea.
The B3F seatpost is assembled with carefully selected parts to match the highest quality. It is a small part to be noticed hardly, that's our aim to keep it running as best as it could be for long instead of short term. VAZALAB wants riders to ride safely and enjoyable.