Overdrive Adult Bike Helmet

star(s) from 1 reviews.

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Overdrive Adult Bike Helmet

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The Overdrive is a performance mountain bike helmet with superior ventilation, removable visor and the TS+ dial fit retention system (use the adjustment dial at the back to customize the fit of your helmet). 21 large vents help manage heat on extra hot days, adding comfort to protection. The Overdrive is perfect for mountain bikers looking for a high performance helmet that stays comfortable and secure all day.

Extras Removable visor, cam-lock strap dividers, moisture wicking seam sealed pad set.
Fit System TS+ dial fit retention system with height adjustable occipital basket.
Ventilation 21 vent holes with deep internal air channels


Use a soft tape measure to measure the circumference (around) your head.

If you don’t have a soft tape measure a piece of string or yarn is a good substitute, make sure to have a ruler or tape measure handy that is at least 24 inches or 2 ft. long.

Measure your head just above your eyebrows, make sure the tape or string is level from front to back.

Compare the measurement to the chart, if using a string check the length of the string with your ruler or tape measure.

EXAMPLE: Results showed a 56cm head circumference (around your head). Which makes for a 7 Hat Size.


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Overall Quality

Style and comfort all in one

Review by Alanne.
Overall Quality

I’ve ridden bikes for 10+ years before making the decision to wear a helmet while riding. I wanted something that wasn’t the stereotypical dorky helmet. This helmet is stylishly discreet and beyond that the build quality is fantastic. The helmet adjustment system is very easy to operate and allows you to quickly dial in your perfect fit. The chin straps adjust to form-fit your face for a cleaner/sleeker look. The top is very low profile and the matte black looks amazing on the frame. In addition this helmet protects the back of your head which is a major feature to feel good about having. Overall fantastic design, thank you DiamondBack!

(Posted on 4/13/2019)