OFFICIAL SIZE GUIDE
FIND THE RIGHT FIT BEFORE YOU RIDE
Size charts for helmets, motocross gear, boots, gloves, and apparel from the brands riders trust.
✓ Official Brand Fitment
✓ Rider Support Available
✓ Shop With Confidence
Sizing may vary by brand, model, and rider preference. If you're between sizes or need help choosing the right fit, contact the AOMC.mx customer support team before ordering.
At AOMC.mx, riders can compare motorcycle and motocross size charts from trusted powersports brands all in one place. Whether you're shopping for helmets, boots, gloves, riding jerseys, motocross pants, protective equipment, or casual riding apparel, our goal is to help riders choose the right fit before placing an order.
Because sizing may vary between manufacturers, riders should always review brand-specific fitment information before purchasing new riding gear. If you need additional help choosing the correct size, the AOMC.mx support team is available to assist with fitment recommendations and sizing questions.
Rider Fitment Guide
How To Measure For Motocross Gear
Use these measurement tips to help find the right fit for motocross helmets, riding gear, boots, gloves, and motorcycle apparel.
Head Measurement
Measure around the widest part of your head, just above your eyebrows and ears. Compare your measurement to the manufacturer’s helmet size chart for the best fit.
Chest Measurement
Wrap a measuring tape around the fullest part of your chest while keeping the tape level. This measurement is commonly used for jerseys, jackets, and riding apparel.
Waist Measurement
Measure around your natural waistline without pulling the tape too tight. Accurate waist measurements help riders choose the correct motocross pant size.
Inseam Measurement
Measure from the crotch down to the ankle while standing straight. Inseam measurements can help improve pant fit and overall riding comfort.
Hand Measurement
Measure around the widest part of your palm excluding your thumb. Proper glove sizing helps improve grip, comfort, and control while riding.
Foot Measurement
Measure heel-to-toe length while standing flat on the ground. Compare your measurement with the manufacturer’s motocross boot size chart for accurate fitment.
Our team wears what we sell and can help you find the right fit before you order.
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How do I know what size motocross gear to order?
Start by taking your chest, waist, and hip measurements with a soft tape measure. Compare those measurements to the brand size chart for the specific item you are buying. If you are between sizes, most riders prefer sizing up for a more comfortable riding fit.
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Do motocross brands size the same?
No, sizing varies between brands like KTM, Alpinestars, Leatt, FLY Racing, and others. A medium in one brand may fit like a small or large in another, which is why we always recommend checking the individual brand chart before ordering.
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Should I size up in motocross jerseys and pants?
In most cases, jerseys are designed to fit loose, so your normal size usually works. For pants, if you are between sizes or plan to wear knee braces, sizing up is often the better option for mobility and comfort.
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How tight should a motocross helmet fit?
A motocross helmet should feel snug and secure with even pressure all around your head. It should not move when you shake your head, but it also should not create pressure points or discomfort. A proper fit will feel tight at first and slightly break in over time.
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What if I am between two sizes?
If you fall between sizes, consider your riding style and comfort preference. For a tighter race fit, go smaller. For all-day comfort or layering gear underneath, go up a size.
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Why does my usual clothing size not match motocross gear sizing?
Motocross gear is built for performance and movement, not everyday casual wear. That means the fit is often more athletic or race-specific, which is why standard clothing sizes do not always translate directly.