Available in up to four sizes for a tailored fit, Quantum features great ventilation, excellent coverage, and of course Bontrager's signature out-of-the-box comfort and incredible ease-of-use. A removable visor adds to the value of a helmet that feels just as at home on the trail as it does on the road.

Price

$74.99 CAD

Features

  • In-mold composite skeleton allows a greater variation of vent shape and size
  • Micro-Manager - Fully-adjustable fit system fits a wide range of head sizes
  • Soft, comfortable, moisture-wicking and washable helmet pads
  • LockDown strap dividers - Helmet strap management made simple
  • Internal, recessed channels manage airflow through the helmet and over the head
  • Removable snap-on visor with visor port plugs
  • Crash Replacement Guarantee
Part No. MSRP* Size Certification Color Weight
433032 74.99 Bontrager S 52 - 56cm CE, CPSC Adult Red / White 310g
433033 74.99 Bontrager M 54 - 60cm CE, CPSC Adult Red / White 340g
433034 74.99 Bontrager L 58 - 64cm CE, CPSC Adult Red / White 350g
501173 74.99 Bontrager S 52 - 56cm CE, CPSC Adult Black 310g
501174 74.99 Bontrager M 54 - 60cm CE, CPSC Adult Black 340g
501175 74.99 Bontrager L 58 - 64cm CE, CPSC Adult Black 350g
501176 74.99 Bontrager XL 60 - 66cm CE, CPSC Adult Black 360g
501165 74.99 Bontrager S 52 - 56cm CE, CPSC Adult White 310g
501166 74.99 Bontrager M 54 - 60cm CE, CPSC Adult White 340g
501167 74.99 Bontrager L 58 - 64cm CE, CPSC Adult White 350g
501168 74.99 Bontrager XL 60 - 66cm CE, CPSC Adult White 360g
434467 74.99 Bontrager S 52 - 56cm CE, CPSC Adult Visibility Yellow 310g
434468 74.99 Bontrager M 54 - 60cm CE, CPSC Adult Visibility Yellow 340g
434469 74.99 Bontrager L 58 - 64cm CE, CPSC Adult Visibility Yellow 350g

*Pricing is set by Bontrager retailers and does not include freight, import duties or taxes for retailers outside of the US.

Pro Sizing

Measure the circumference of your head using a cloth tape measure or a piece of string and a ruler. Use the chart below to find the proper helmet size based on your measurement.

cm 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66
  Small                  
          Medium            
                  Large    
                      X-Large

1 Head

Take your measurement horizontally across your brow and over your ears.

Ride it and love it. If not, we’ll take it back.

Ride it and love it. If not, we’ll take it back.

It’s that simple.

If for any reason you’re not satisfied with your Bontrager products, return the item - along with the original sales receipt - to the place of purchase within 30 days of purchase date for exchange or store credit.