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HJC Adwatt TT Helmet

★★★★★ ★★★★★
MSP £275.00 Save 15%

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Adwatt TT Helmet

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Product ID: 1151817

The HJC Adwatt TT Helmet offers performance that's been proven in a successful UCI Hour Record attempt.

It's aerodynamic profile slices through the air, saving you precious watts, and two vents work to keep you cool in the process. Safety is taken care of by the In-Mold construction.

HJC Adwatt TT Helmet

Extensive wind-tunnel testing results in the HJC Adwatt TT Helmet being incredibly fast. It has UCI Hour Record winning credentials and is designed to be equally efficient aerodynamically, with or without the shield attached. Two vents keep the air flowing so you won't overheat during big efforts, and an In-Mold construction keeps you well protected in the event of an impact.


  • HJC Adwatt TT Helmet
  • Spare pads
  • Premium case


  • Wind tunnel tested
  • Aerodynamic design
  • In-Mold construction method for rider protection
  • Internal reinforcement structure
  • Two vents
  • Manufacturer claimed weight: 280 grams (without shield) / 340 grams (with shield) (size M/L)
  • Includes: Spare pads / premium case

HJC Adwatt TT Helmet Sizing

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