Gemini ÄLSAK Carbon Seatpost for Factor Ostro Gravel / Ostro VAM / Monza

The ÄLSAK aero post, built specifically for the Factor Ostro Gravel, Ostro VAM and Monza. Made to fit — not adapted to fit.

Same construction as every ÄLSAK: carbon monocoque, forged carbon clamp head pressed at over 100 tons, full titanium hardware — shaped to these frames' exact seat tube.

The essentials

• Frames: Factor Ostro Gravel / Ostro VAM / Monza
• Construction: unibody carbon monocoque · forged carbon head · titanium hardware
• Clamp: fits round and oval rails
• Laminates: Lightweight (up to 90 kg) / Performance (up to 120 kg)

Finish

UD matte standard; UD gloss, 12K gloss and 12K matte available, plus Custom Lab one-of-one finishes.

Made to order

Typically four weeks. We confirm the lead time in writing before taking payment — and your frame year and size in writing before production. Three-year warranty and crash-replacement programme.