In short
- What it is: the 2G Engineering washable polyester sport air filter for Ducati Monster 821, Dark, Stripe and Stealth (2014–2020), all versions. Designed and made by us.
- What it offers: more airflow than the stock paper filter. It's washable and lasts a lifetime: no more replacing it at every service.
- Plug & Play: it fits in place of the stock filter in the standard airbox, with no modifications.
- To get rid of the mid-range dip: pair it with the 2G enlarged intake kit.
⚠️ FOR RACE USE ONLY
This product is intended exclusively for competition use on closed circuits. It is not approved for road use: use on public roads is not permitted.
Why replace the stock paper air filter
The stock Monster 821 filter is made of paper: over the miles it clogs, loses permeability and has to be replaced at every service. The 2G Engineering filter is made of polyester fabric: it lets more air through, traps dirt and is cleaned with a blast of compressed air, with no oil. You buy it once and it lasts a lifetime.
What a performance filter can and can't do
A more permeable filter improves airflow, but on the Monster 821 the real limit is the stock intake inlet, narrow and very restrictive. If your goal is to get rid of the mid-range torque dip and the snatchy throttle at low revs, pair the filter with the 2G enlarged intake kit: together they make up our complete intake kit, which on the dyno delivered about +5–6 Nm from low revs up to 5,500 rpm and up to +4 HP in the mid-range with no remap.
The solution: 2G Engineering polyester air filter
The cylindrical filter has the same dimensions as the original Ducati filter: it fits the stock airbox or the 2G enlarged intake kit with no modifications. It is designed and made in Soliera (Modena), in the heart of the Motor Valley.
What changes
- More airflow: the polyester fabric is more permeable than the stock filter's paper.
- Lasts a lifetime: it's not a service part to replace: just clean it and refit it.
- Minimal maintenance: the filter is dry and needs no oil: just clean it with a blast of compressed air.
- Ready to upgrade: if you add the 2G enlarged intake kit later, you can reuse the filter.
Which version to choose
| Version | What's included | Who it's for |
|---|---|---|
| Kit with 2G performance air filter | Enlarged intake kit + 2G dry polyester filter | Riders still running the stock paper filter |
| Intake kit without filter | Enlarged intake kit (filter not included) | Riders who already have an OEM-size air filter |
| 2G sport air filter only (this page) | 2G dry polyester filter, washable | Riders who want a lifetime filter for the stock airbox |
Compatibility
Ducati Monster 821, Dark, Stripe and Stealth (2014–2020), all versions. It fits the stock airbox and the 2G enlarged intake kit.
Installation
The filter fits in place of the stock one, in the same position and with the same dimensions: nothing needs modifying and you can refit the stock filter at any time.
Technical specifications
| Compatible models | Ducati Monster 821, Monster 821 Dark, Monster 821 Stripe and Monster 821 Stealth, all versions |
|---|---|
| Years | 2014–2020 |
| Filter media | Polyester, dry, washable |
| Maintenance | Clean with compressed air, no oil |
| Service life | Lifetime: no replacement at services |
| Compatible airboxes | Stock Ducati airbox and 2G enlarged intake kit |
| Remap | Not required |
| Installation | Plug & Play, in place of the stock filter |
| Package contents | 2G Engineering performance air filter |
| Made in | Italy, Soliera (Modena) |
Frequently asked questions
Does the filter alone get rid of the mid-range dip?
On its own it makes little difference, because the limit is the stock intake inlet. To get rid of the torque dip and the snatchy throttle, pair it with the 2G enlarged intake kit.
Do I need to remap the ECU?
No. The filter fits in place of the stock one and works with the stock ECU.
How often does it need replacing?
It doesn't need replacing like a paper filter: just clean it with compressed air when it's dirty and refit it.
How do I clean the filter?
The filter is dry polyester and must not be oiled: clean it with a blast of compressed air against the direction of the intake flow.
Can I fit it with the 2G enlarged intake kit?
Yes. The filter has OEM dimensions and fits both the stock airbox and the 2G enlarged intake kit.
Does it fit every version of the Monster 821?
Yes: Monster 821, Dark, Stripe and Stealth from 2014 to 2020, both the first series and the 2018 facelift.
How long does shipping take?
All products are in stock and ship within 24 hours, worldwide. You have 15 days from delivery to return the product if you're not satisfied.
Replace the paper filter on your Monster 821 with one that lasts a lifetime: we ship it within 24 hours.
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