Arrow 72612AKN Maxi Race-Tech Dark Silencer – BMW F 650 GS and F 800 GS 2008-2018

The Arrow 72612AKN exhaust is the black version of the Maxi Race-Tech slip-on: "Dark" aluminium body, carbon rear end cap, and stainless steel muffler interior, for BMW F 650 GS and F 800 GS / Adventure. It is homologated, mounts on original headers with the included connector, weighs 2.79 kg, and comes with a db-killer. Product code 72612AKN.

✓ Strengths

• Total black – "Dark" painted aluminum body and carbon fiber end cap: the GS tail remains dark even after changing the muffler.
• Homologated – on the official Arrow diagrams, the 72612AKN falls under the homologation marking, just like the natural aluminum version.
• No other purchases – it is classified among the exhausts for original headers and the Arrow technical sheet lists the stainless steel connector among the product materials.
• 2.79 kg – the weight declared by Arrow for this code, one hundred grams less than the natural version.
• Covers three generations – F 650 GS 2008-2012, F 800 GS / Adventure 2008-2016 and 2017-2018.
• Db-killer included – the noise reducer is provided in the supply.

Technical features

Vehicle compatibility

The list is taken from the official Arrow spare parts catalog. Always check your motorcycle's model and year before ordering.

Performance declared by Arrow

These are the values published by Arrow on the pages of the two models. For the F 800 GS / Adventure 2017-2018, Arrow does not publish dyno data. The 2.79 kg indicated as the weight of the Arrow exhaust system matches the weight of this exhaust.

Arrow also publishes two Dynojet graphs, which you can find among the product photos. On the F 800 GS graph, the maximum power increases from 81.01 HP with the original exhaust to 83.83 HP with only the Arrow exhaust, and reaches 85.15 HP with the complete kit (exhaust + racing headers). On the F 650 GS graph, where Arrow does not offer headers, it increases from 69.70 HP to 70.16 HP with the exhaust.

Products listed in the catalog

• 72612AK – the same Maxi Race-Tech exhaust with a natural aluminum body instead of "Dark"

Who it's perfect for

For those who have an F 650 GS or an F 800 GS — including Adventure — that is already dark and doesn't want the new exhaust to be the only shiny part of the motorcycle. The "Dark" painted body and carbon fiber end cap keep the tail color consistent, while underneath it's the same homologated slip-on as the natural version: 400 mm body, stainless steel connector included, db-killer supplied, and direct mounting on stock headers. It's the choice for those who change the muffler for sound and weight, but also want it to be discreet.

Frequently Asked Questions

Is the Arrow 72612AKN homologated?
Yes. On the official Arrow diagrams for the F 650 GS and F 800 GS / Adventure, the 72612AKN appears in the same table as the 72612AK, under the homologation marking. It can be used on the road with the db-killer in place.

What is the "Dark" finish?
It is the dark painted aluminum body that Arrow uses on this version. The rear end cap remains carbon fiber and the internal parts of the muffler stainless steel: only the external appearance changes compared to the 72612AK in natural aluminum.

Do I also need to change the headers?
No. On all three Arrow model pages, this exhaust is classified among the exhausts for original headers, and the connecting pipe is already included: it mounts on the standard system without any other purchases.

Which BMWs does it fit?
On the F 650 GS from 2008 to 2012 and on the F 800 GS, also in the Adventure version, for both the 2008-2016 and 2017-2018 series. Arrow identifies the first two with vehicle type E8GS, and the third with 4G80.

What are its measurements and weight?
Arrow declares a 400 mm long body, with an inlet diameter of 54 mm and an outlet of 50 mm, for a weight of 2.79 kg. Mounting to the frame is done with a steel clamp. There is no provision for a lambda sensor or a CO sensor.

How much does it change compared to the original?
On the F 800 GS / Adventure 2008-2016, Arrow declares 82.5 HP and 77.86 Nm compared to the 79.50 HP and 74.63 Nm of the standard system; on the F 650 GS, 68 HP and 73.84 Nm compared to 67 HP and 71.59 Nm. In both cases, the system weight decreases from 4.80 to 2.79 kg and the static noise increases by 2 dB. On the F 800 GS Dynojet graph, the exhaust alone increases maximum power from 81.01 to 83.83 HP.