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Bontrager Circuit
  • Color: Charcoal/Black
  • Color: White/Silver
  • Color: Red/Black/White
  • Color: Black/Vis Yellow



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Bontrager Circuit

Bontrager's Circuit is a lightweight road helmet that features massive vents for maximum airflow. It features their one-hand-adjustable Headmaster fit system, plus it has an in-mold strap retention system with FlatLock strap adjusters for a superb fit and serious safety. The premium fit pads not only give you a custom feel, they also help keep your head dry on those hot rides.

Features and Information

  • Race-level performance, ridiculous price: That's the new Circuit helmet. Strong, light, highly ventilated, with simple adjustability - everything you need in your first real road helmet or as a spare for racers.
  • In-mold composite skeleton increases structural integrity and allows a greater variation of vent shape and size
  • Headmaster - Intuitive one-handed fit system adjustable by height and circumference
  • FormFit - Flexible head-conforming brow band has a tailored feel that also improves ventilation
  • FlatLock strap dividers - Helmet strap management made simpler and more comfortable with a fixed position and streamlined fit
  • Internal, recessed channels manage airflow through the helmet and over the head
  • NeoVisor-compatible - Allows easy installation of NeoVisor
  • Unconditional Bontrager Guarantee
  • Crash Replacement Guarantee - Free replacement if your helmet is involved in a crash during the first year of ownership


by PowerReviews
Option Barcode Manufacturer's Part Number Vendor Number Store SKU
Charcoal/Black / Small (51-57 cm) 00768682342961 433625 TRK-433625
Charcoal/Black / Medium (54-60 cm) 00768682342985 433626 TRK-433626 433626
Charcoal/Black / Large (58-63 cm) 00768682343005 433627 TRK-433627 433627
White/Silver / Small (51-57 cm) 00768682343029 433628 TRK-433628
White/Silver / Medium (54-60 cm) 00768682343043 433629 TRK-433629 433629
White/Silver / Large (58-63 cm) 00768682343067 433630 TRK-433630
Red/Black/White / Small (51-57 cm) 00768682343081 433631 TRK-433631
Red/Black/White / Medium (54-60 cm) 00768682343104 433632 TRK-433632 433632
Red/Black/White / Large (58-63 cm) 00768682343128 433633 TRK-433633 433633
Black/Vis Yellow / Small (51-57 cm) 00768682343142 433634 TRK-433634 433634
Black/Vis Yellow / Medium (54-60 cm) 00768682343166 433635 TRK-433635 433635
Black/Vis Yellow / Large (58-63 cm) 00768682343180 433636 TRK-433636 433636

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