Are these the same helmet?

Yes. Both are the LS2 Advant X carbon flip-up. The Future II is a graphics version; the Solid Carbon is the plain glossy carbon version. The shell, chin bar and visor system are the same design.

Which is better for highway touring?

Neither is quiet. Testers rated the Advant X 3.0/5 for noise at 103 dB, with wind noise around the visor and chin at highway speed. If quiet matters most, a dedicated full-face helmet will beat both.

Is the Future II worth the savings?

Yes. It costs $338.02 at Champion Helmets as of November 4, 2026 versus $599.98 at Amazon as of November 4, 2026, and it includes a Pinlock insert and a dark smoke visor. You give up nothing in certification.

The Future II is listed at 1470 g +/- 50 g. The Solid Carbon is listed at 1.55 kg. That is roughly 80 g, which matters little on short rides but helps with neck fatigue on long ones.

Can I use either as an open-face helmet?

The Future II is ECE P/J certified, so it can be worn with the chin bar up. The Solid Carbon is listed as a flip-up with ECE 22.06 and DOT, but its P/J rating is not stated.

Do both fit Bluetooth intercoms?

The Future II has speaker cutouts and is listed as compatible with most Bluetooth intercoms. The Solid Carbon is listed as Bluetooth-ready, but check the ear pockets for your unit's speaker size.

LS2 Advant X Carbon Future II Helmet vs LS2 FF901 Advant X Solid Carbon

Both are the same LS2 Advant X flip-up in carbon, so the real choice is price and trim. The Future II at $338.02 at Champion Helmets as of November 4, 2026 is far cheaper than the Solid Carbon at $599.98 at Amazon as of November 4, 2026, and it ships with a Pinlock insert and a dark smoke visor. Buy the Future II unless you specifically want the plain glossy carbon look and can only find the Solid Carbon in your size.

Today the LS2 FF901 Advant X Solid Carbon costs $38.03 less at its best price.

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