The all-new Specialized Aethos 2 is here!

At Kaptein, we’re thrilled to introduce something truly special — the all-new Specialized Aethos 2.

At just 595 grams, it’s the lightest production road frame in the world. Paired with the all-new Roval Alpinist cockpit and Alpinist wheels, complete builds come in at under 6 kg — no gimmicks, just pure performance.

The Aethos 2 isn’t about chasing medals or rules. It’s about the joy of riding — effortless climbs, confident descents, and a ride so responsive it feels like the bike disappears beneath you.

The Aethos 2 has arrived at Kaptein. We’d love to welcome you in, show it to you, and let you experience the ride for yourself.

What's new

• Refined Geometry — tuned with decades of Body Geometry fit data
• 35 mm Tire Clearance — more comfort, grip, and versatility
• All-New Roval Components — lighter, smoother, fully integrated cockpit + wheels

What Hasn’t Changed

• Still World’s Lightest Disc Road Frame — just 595 g
• Sublime Ride Feel — the same effortless, responsive handling riders loved in Aethos 1
• Builds Under 6 kg — size 56, tubeless, with no gimmicks

Key Upgrades

Geometry

• +15 mm taller stack = more comfort, less hand pressure
• +7 mm longer wheelbase = stable at speed
• 0.5° slacker headtube = smoother control
• -3 mm bottom bracket = more planted in corners

Clearance

• Fits up to 35 mm tires with no added weight
• Engineered layup refined down to fractions of a millimeter
• Re-engineered details save grams everywhere:
  • Seatpost clamp (-9 g)
  • Brake mounts (-2 g)
  • BB shell (-6 g)
  • UDH derailleur hanger (-2 g)

Components

Alpinist II Cockpit (270 g)

• Oval tops reduce hand pressure
• 4° flare supports natural wrist angles
• 28.3% more damping for less fatigue
• Internal cable routing for a clean, timeless look
• Compatible with standard bar + stem setups

Alpinist CLX III Wheels (1,131 g)

• Roval Aero Composite spokes save 103.5 g, stronger than steel
• New lightweight hubs with DT Swiss 180 internals
• Hooked rims = secure tire fit, durability, and flat protection

Now available at Kaptein. Come in and experience the Aethos 2 for yourself.