Akrapovič BMW M340i G20 and G21: price, sound and alternative

Akrapovič catalogue checked on 6 November 2026 on the brand's official website, which publishes no prices; prices from the official Akrapovič dealer in France checked the same day; sources at the end of the article.

The short answer. For a BMW M340i G20 or G21, the Rog system is a valved cat-back made from your VIN, in stainless steel or titanium, from €2,490, with free delivery and a 3-year warranty. At the official Akrapovič dealer in France, the M340i titanium Slip-On is listed from around €6,500, and the brand also requires a BMW valve actuator.

Your vehicle.

Choose your model: we show you its exhaust, its options and the lead time.

Make Choose a make Model Choose a model See my exhaust

Or simply enter your VIN

We check compatibility with your VIN before manufacturing.

Valved Exhaust System for BMW M340i B58 G20 / G21 3.0T (2019+)From $4,117 · 20 working days See my exhaust

Contents 7

1. The M340i Akrapovič: a titanium Slip-On.
2. The price of the Akrapovič on the M340i.
3. The B58 sound: your choice.
4. Akrapovič or Rog on the M340i: the table.
5. Which one for your M340i.
6. Frequently asked questions.
7. Sources.

What Akrapovič offers for the M340i, what it costs, and what changes with a Rog system made from your BMW's VIN.

The M340i Akrapovič: a titanium Slip-On.

As of 6 November 2026, Akrapovič's catalogue offers a titanium Slip-On Line for the M340i G20 and G21 with particulate filter, the rear part of the system, with carbon tips. The brand states that an original BMW valve actuator, ordered separately, must be added, and that its CE certification only applies to cars with a particulate filter. For M340i cars without a filter, it offers an Evolution Line, with link pipes on top.

The Rog system replaces everything after the downpipe, on the G20 saloon as on the G21 Touring, with the same system.

The price of the Akrapovič on the M340i.

Akrapovič publishes no prices on its official website. At its official dealer in France, at the retail price checked in November 2026 and subject to promotions, the M340i titanium Slip-On is listed from around €6,500, excluding the BMW valve actuator.

At Rog, the price is shown on the product page: from €2,490 in stainless steel and €2,990 in titanium, with free delivery.

The B58 sound: your choice.

The M340i gets the B58, a 3.0-litre turbocharged straight six: 374 hp and 500 Nm, and since November 2025, 392 hp and 540 Nm. Its round voice arrives muted as standard. The Rog system lets you choose:

• the character, at the same price: straight pipe for the raw sound of the straight six, or resonator for a rounder, slightly softer voice;
• the material: 304 stainless steel, or titanium about 40% lighter for the same design (+ €500), in a brushed, gold or purple finish;

The BMW M340i G20 system in titanium: brushed, gold or purple.

• the control, at the same price: your original valves, refitted on the system and still controlled by the drive modes, or Rog valves already fitted, with their remote;
• the front section, as an option: 200-cell or 100-cell catalysed downpipe (+ €820), or decat (+ €530).

The M340i downpipe, catalysed or decat.

Valves open, the straight six makes itself heard from start-up, climbs cleanly through the revs and crackles on lift-off. Valves closed, the M340i stays the everyday tourer, without drone. The system fits without welding, with clamps and gaskets, in about two hours at the garage of your choice.

Rog tips with the engraved R: black, burnt titanium or polished stainless steel.

Akrapovič or Rog on the M340i: the table.

Which one for your M340i.

If you want a complete system, controllable valves and the choice of character, material and front section, the Rog system is made for that: from €2,490, remote included, with free delivery and a 3-year warranty. It is made in 20 working days from your VIN, which confirms the model year before manufacture.

Configure everything on the BMW M340i G20 / G21 exhaust product page, see all our systems for this generation on the BMW 3 Series G20 / G21 exhaust page, and find every option explained in the M340i guide. Also worth reading: Akrapovič M3 G80 / M4 G82 and Akrapovič vs Rog: how to choose.

See also: Akrapovič BMW M140i · Fi Exhaust M340i.

Frequently asked questions.

How much is the Akrapovič exhaust on the M340i?
Akrapovič publishes no prices. At its official dealer in France (November 2026), the titanium Slip-On is listed from around €6,500, and the brand requires a BMW valve actuator to be added. The Rog system is listed from €2,490.

Can my M340i Touring G21 take the Rog system?
Yes. The G20 saloon and the G21 Touring take the same Rog system. Your VIN confirms the model year before manufacture.

Does the M340i need a remap?
Not for the cat-back: the B58 keeps its map. With the downpipe and a remap at an approved tuning centre, the published figures reach 440 hp and 620 Nm.

Can I keep the BMW valve control?
Yes, if your M340i has it: the system takes over its control. Otherwise, the Rog valves are operated with their remote, which is included.

Does the Rog system drone on the motorway?
No. With the valves closed, the gases flow through the whole rear silencer and the cabin stays calm at a steady speed.

Sources.

1. Akrapovič, official website: BMW M340i (G20, G21) catalogue with and without particulate filter, "Slip-On Line (Titanium)" S-BM/T/30H, consulted on 6 November 2026. Akrapovič publishes no prices.
2. Auto Racing France, official Akrapovič dealer in France: retail price including VAT for reference S-BM/T/30H, checked on 6 November 2026.
3. Rog, BMW M340i G20 / G21 product page (price and options), read on 6 November 2026: BMW M340i G20 / G21 exhaust.