The most common mistake in this category is buying riding kit and thinking you have bought protection.
A jersey is a shirt. It is a light abrasion and visibility layer, cut loose to go over armour, with no impact certification and no claim to one. MX pants are more substantial — reinforced seat and knee panels, cut to clear a knee brace — and they are still not protective equipment in the sense that a CE-rated guard is.
That is fine as long as the order is right. Base layer, then armour, then kit. The kit is what you see; the armour is what works.
Why e-moto riders need the wicking layer more than they expect
Trail riding on an electric bike tends to be slower, more technical and longer than the gas equivalent. There is less airflow at the speeds these bikes are actually ridden in the trees, and no engine noise or fuel stop to tell you two hours have passed.
The practical result is more sweat and more time in contact with armour. A cotton t-shirt under a chest protector is how people end up with chafing, and chafing is the single most common reason riders quietly stop wearing armour.
The least glamorous item on this page and the one most likely to change whether the protective gear gets worn.
Jerseys
All three below are cut loose over armour, which makes them the one clothing item that survives being bought without a measurement.
The value option and the one to buy in pairs. At $32.99 it is cheap enough that a torn sleeve is not an event.
The lightweight option, aimed at hot-weather riding where the mesh matters more than the durability.
For a young rider, the same cut in youth sizing:
Pants
This is where sizing starts to matter, and where the common error lives.
MX pants run one to two sizes below jeans. They are cut to sit over a knee brace and under armour rather than on the hip, so the waist number is not the jeans number. Measure the natural waist, not where a belt sits, and use the brand's own chart.
The reinforced knee panels are the functional part — they are what lets a knee brace or guard sit underneath without the pant binding. That is a real feature and it is still not impact protection.
What actually protects, worn underneath
Listed here because this is the page where people decide, and the decision is frequently wrong.
CE EN 1621-1 Level 1 at the hip, worn under the pants. The hip is what hits the ground in a low-side and it is the injury that takes an adult rider out for a season. Almost nobody owns a pair.
The Airframe carries CE Level 1 impact ratings for chest and back, which makes it protective equipment rather than a roost deflector — a distinction covered properly on our chest protector page.
What to spend
A jersey is a $33 to $45 item and there is little reason to spend more unless you want a specific cut or graphic. Buy two rather than one expensive one.
Pants are $90 to $120 for something that will last several seasons. The step above that buys race features and lighter materials rather than more protection.
A base layer is $105 and it is the piece most likely to be skipped and most likely to be worn every single ride.
The bottom line
Buy the base layer first, then the armour, then the kit. If the budget only stretches to two of the three, skip the jersey — a $10 technical t-shirt under a chest protector protects exactly as much as a $45 jersey does, which is to say nothing, and the money is better in the armour.
For measuring any of this without the rider present, see the gear sizing guide.
VoltRipper is independent and spec-verified. Prices are what we verified at the retailer on the date shown — confirm before you buy.
FAQ
Do dirt bike jerseys and pants protect you?
Barely, and not in the way people assume. A jersey is a light abrasion and visibility layer worn over armour, and MX pants add knee panels and reinforcement that tolerate a brace underneath. Neither carries an impact certification. The protection is the armour worn under them, which is why buying kit instead of armour is the common and expensive mistake.
What size MX pants should I buy?
Usually one to two sizes below your jeans size, because MX pants are cut to sit over a knee brace and under armour rather than on the hip. Measure the natural waist rather than where a belt sits, and use the brand's chart — the numbers do not carry across makers.
Do I need a base layer?
It is the most-skipped and least-regretted purchase in the category. A base layer wicks sweat, stops armour chafing directly against skin, and regulates temperature — and chafing is the reason people stop wearing armour, which makes the base layer indirectly protective.
Why do electric dirt bike riders run hotter?
Less airflow at the speeds these bikes are usually ridden, and no engine noise to signal that you have been out for two hours. Trail riding on an e-moto tends to be slower, more technical and longer than the equivalent gas ride, all of which favour a proper wicking layer over a cotton shirt.