Gemini Alsak Factor OSTRO VAM Seatpost

Gemini Alsak Factor OSTRO VAM Seatpost

The Gemini Alsak Factor OSTRO VAM Seatpost is one of the lightest seatposts available. Built specifically for the current generation OSTRO VAM (compatible with the OSTRO VAM V1), it features a forged carbon fiber unishell body for maximum stiffness at minimal weight. Titanium hardware keeps the grams down while ensuring durability for road riding and racing. The saddle clamp is compatible with both round and oval rails, offering broad versatility across setups.

The Alsak seatpost is offered in 300 mm, 350 mm, and 400 mm lengths. It features Gemini’s UD finish, available in both gloss and matte. Riders can also choose the performance carbon layup, Gemini’s stiffest construction, recommended for those weighing between 198 lbs. and 264 lbs.

Please note the Alsak seatpost cannot be cut and the minimum insertion depth must be followed.

Product Details

Key Features of the Gemini Factor OSTRO VAM Seatpost

• Exceptionally Lightweight: Starting at under 100 grams, this is one of the lightest seatposts in the world.
• Premium Materials: Made from forged carbon fiber and uses titanium hardware.
• Saddle Compatibility: Works with round and oval saddle rails.

Compatibility

This Alsak seatpost is compatible with the current generation Factor OSTRO VAM. See Compatibility tab for more details.

Considerations

This is a premium seatpost that is handcrafted and requires an extensive manufacturing process. While it is exceptionally lightweight, it also has a premium price tag.

Advice From Our Staff

This is an excellent choice for Factor OSTRO VAM riders who are looking to save weight on their build. Not only is this seatpost very light, but it looks great and is available in matte and gloss colors to match your frame.