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Speed and Strength SS400 Solid Speed Gloss Black Half Helmet

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Sizing Chart


Measuring the Size You Need

Speed and Strength SS400 Solid Speed Gloss Black Half Helmet

• ATPA (Advanced Thermo-poly Alloy Shell)

• DVD! (Drop Visor Design)

• Speed Strap - quick release chin strap

• Ear protector with rigid back included

• Dark smoke shield included


Product Specs

DOT Approved: Yes

Gender: Men's

Manufacturer Part Number: 877150

Sold in Units: Each


Speed & Strength Helmet Size Chart

Size Hat Size Head Measurement
X-Small 6 1/2"–6 5/8" 20 7/8"–21 1/4"
Small 6 3/4"–6 7/8" 21 5/8"–22"
Medium 7"–7 1/8" 22 1/2"–22 7/8"
Large 7 1/4"–7 3/8" 23 1/4"–23 5/8"
X-Large 7 1/2"–7 5/8" 24"–24 3/8"
2X-Large 7 3/4"–7 7/8" 24 3/4"–25 1/4"

Head Measurement:

To measure your head size, wrap a tape measure horizontally around your forehead. Select the helmet that is the closest fit to that size. A helmet should fit snug ony our head. If it moves while wearing, it is too large. If it is painful to wear, it is too small.


Open the chin straps and slide the helmet onto your head starting at the forehead. A helmet should feel snug. If it slides on easily it is too big. It should feel tight to pull down. Make sure the inner padding fits snug all around. You should feel the padding pressing against your cheeks and head. The last check for a proper fit is to test if it moves while wearing, there should be no movement if you shake your head. Place your hands on the helmet and move it front to back and side-to-side. If there is a lot of movement, try a size down.

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