CE armor is rated under EN 1621 for impact protection. Level 1 and Level 2 both certify as motorcycle armor — but Level 2 transmits roughly half the force to your body. Level 1 caps at a 35 kN maximum transmitted force in testing; Level 2 caps at 20 kN (lower is better). Level 2 is more protective; Level 1 is thinner, more flexible, and lighter. For most riders, Level 2 at the impact points (back, shoulders, elbows, knees, hips) is worth the small trade in bulk. Armor handles impact; it's separate from the abrasion protection of your jacket or jeans.
Two different protection systems
First, a clarification that prevents most confusion: your gear protects you two different ways, and they're rated separately.
1. Abrasion resistance — the fabric (Kevlar, Dyneema, Cordura, leather) that resists scraping in a slide. Rated under EN 17092 (the AAA/AA/A classes).
2. Impact protection — the armor inserts that absorb the force of hitting the ground or an object. Rated under EN 1621 (the CE Level 1/Level 2 classes).
This article is about the second one — the armor. The CE Level 1 vs Level 2 question is purely about impact, not abrasion. You need both systems: abrasion-resistant fabric and impact armor. See AA vs AAA for the abrasion side.
What the CE armor ratings actually measure
CE armor is tested under EN 1621 (EN 1621-1 for limb armor, EN 1621-2 for back protectors). The test is straightforward: a standardized impact is delivered to the armor, and the machine measures how much force passes through to what's behind it.
The less force transmitted, the better the armor absorbed the impact. The ratings cap the maximum transmitted force allowed:
| Rating | Max Transmitted Force (Limb Armor, EN 1621-1) | Meaning |
|---|---|---|
| Level 1 | ≤ 35 kN (with no single value above ~50 kN) | Baseline certified protection |
| Level 2 | ≤ 20 kN (with no single value above ~30 kN) | Roughly half the transmitted force |
Lower transmitted force is better. Level 2 armor lets through roughly half the force that Level 1 allows. In impact terms, that's a meaningful difference in how much energy reaches your bones and joints.
(Back protectors under EN 1621-2 use slightly different thresholds but the same principle: Level 2 transmits less force than Level 1.)
Level 1 armor
Characteristics
- Thinner and lighter — less material
- More flexible — moves more naturally, less noticeable when worn
- More comfortable for all-day wear
- Certified protection — still passes the EN 1621 standard
Drawbacks
- Transmits up to ~35 kN — significantly more force than Level 2
- Less protective in higher-energy impacts
Best for
Riders prioritizing comfort and flexibility, lower-speed urban riding, and those who find Level 2 too bulky. Level 1 is genuinely protective — it's a certified standard, not a token. It's just the lower of the two tiers.
Level 2 armor
Characteristics
- Transmits ~20 kN or less — roughly half the force of Level 1
- More protective in impacts, especially higher-energy ones
- The recommended standard for highway and higher-speed riding
Drawbacks
- Thicker and often heavier — more material to absorb force
- Can feel bulkier until broken in
- Slightly more noticeable when worn
Best for
Most riders, most of the time — especially highway, sport, and mixed riding. The additional impact protection is worth the modest trade in bulk. Modern Level 2 armor (especially the temperature-adaptive types) has narrowed the comfort gap significantly.
Side-by-side comparison
| Factor | Level 1 | Level 2 |
|---|---|---|
| Max Transmitted Force (Limb) | ≤ 35 kN | ≤ 20 kN |
| Relative Protection | Baseline | ~2× (half the force through) |
| Thickness | Thinner | Thicker |
| Weight | Lighter | Heavier |
| Flexibility | More flexible | Less, but improving |
| Comfort | Higher | Good, improving with modern materials |
| Best For | Urban, comfort priority | Highway, sport, most riders |
The temperature-adaptive option (D3O and similar)
A note worth making because it changes the comfort calculation: some modern armor — D3O is the best-known — uses materials that are soft and flexible at rest but stiffen instantly on impact. The molecules flow freely under normal movement and lock together when struck.
This means you can get Level 2 protection in a package that feels closer to Level 1 comfort when you're just riding. These adaptive armors have largely closed the old comfort gap that pushed riders toward Level 1. If comfort was your reason for considering Level 1, look at temperature-adaptive Level 2 first.
Where armor goes
A complete impact-protection setup covers the impact points:
| Position | Priority | Notes |
|---|---|---|
| Back Protector | High | Spine protection; often a separate purchase from the jacket. |
| Shoulders | High | Usually included in jackets. |
| Elbows | High | Usually included in jackets. |
| Knees | High | In riding pants/jeans armor pockets. |
| Hips | Medium-High | Often optional in jeans; important for highway riding. |
| Chest | Optional | Available for jackets; less commonly fitted. |
Many jackets ship with shoulder and elbow armor but not a back protector — that's frequently a separate $50-100 purchase. Don't assume your jacket has back protection; check. Highway-speed back/spine impact is among the most serious injury mechanisms.
Which should you choose?
| If You... | Choose |
|---|---|
| Ride highway or sport regularly | Level 2 |
| Want maximum protection | Level 2 |
| Ride mostly low-speed urban, prioritize comfort | Level 1 (or adaptive Level 2) |
| Find standard Level 2 too bulky | Temperature-adaptive Level 2 (e.g., D3O) |
| Are building a first kit | Level 2 at back, shoulders, elbows, knees |
For most riders, the answer is Level 2 at the major impact points, ideally in a temperature-adaptive material that keeps the comfort of Level 1. The protection difference (half the transmitted force) is significant, and modern materials have made the comfort trade-off small.
FAQ
- What's the difference between CE Level 1 and Level 2 armor?
- Both are certified motorcycle impact armor under EN 1621. Level 1 transmits up to ~35 kN of force; Level 2 transmits ~20 kN or less — roughly half. Level 2 is more protective; Level 1 is thinner, lighter, and more flexible. Lower transmitted force is better.
- Is Level 2 armor worth it over Level 1?
- For most riders, yes — Level 2 transmits about half the impact force, a meaningful protection difference. The trade-off is slightly more bulk, but modern temperature-adaptive Level 2 armor (like D3O) has largely closed the comfort gap. For highway and sport riding especially, Level 2 is recommended.
- Does CE armor cover abrasion protection?
- No. CE armor (EN 1621) covers impact protection only. Abrasion resistance is a separate system rated under EN 17092 (the AAA/AA/A classes) and comes from the fabric — Kevlar, Dyneema, Cordura, or leather. You need both: armor for impact, fabric for abrasion.
- What is D3O armor?
- D3O is a brand of temperature/impact-adaptive armor. The material is soft and flexible during normal movement but stiffens instantly on impact, then returns to flexible. It allows Level 2 protection with comfort closer to Level 1. SAS-TEC, Forcefield, and Knox make similar adaptive armors.
- Do I need a back protector if my jacket has armor?
- Often yes — many jackets include shoulder and elbow armor but not a back protector, which is a separate purchase. Spine protection matters, especially at highway speed. Check whether your jacket has a back protector or just a pocket for one.
- Where should I prioritize Level 2 armor?
- Back/spine first, then shoulders, elbows, and knees — the high-priority impact points. Hips are next, especially for highway riding. A complete setup uses Level 2 at all major impact points.
