Arrow 71407MI 2:1 Stainless Steel Racing Collectors – BMW F 800 GS and Adventure 2008-2016

The Arrow 71407MI racing collectors form a 2:1 stainless steel exhaust system that replaces the original collectors of the BMW F 800 GS and F 800 GS Adventure 2008-2016 (Arrow vehicle type E8GS). They have a 54 mm outlet and a lambda sensor housing. Arrow labels them as racing: they are not homologated and should only be used on closed circuits. Product code 71407MI.

✓ Strengths

• 2:1 configuration – the two pipes of the twin-cylinder merge into a single 54 mm outlet.
• Stainless steel – the entire body of the assembly, from the two pipes to the merge.
• Lambda sensor housing – the sensor fits on the Arrow collector; there is no housing for the CO sensor.
• 2.61 kg declared – official Arrow weight of the complete assembly.
• The step missing from the silencer alone – the Dynojet graph published by Arrow for this motorcycle compares three configurations (original exhaust, Arrow silencer kit, complete Arrow kit) and the curve of the complete kit remains above that of the silencer alone.

Technical features

Vehicle compatibility

The list is taken from the official Arrow catalog (B2B area). If you have any doubts, send us your motorcycle's VIN and we will verify the correct code.

What they combine with

The 71407MI collectors work with the two Maxi Race-Tech silencers with carbon end caps provided by Arrow for this motorcycle: the 72612AK in natural aluminum and the 72612AKN in "Dark" aluminum, both homologated. However, the Arrow mounting diagram connects collectors and silencer with a dashed arrow and adds the note "silencers also fit on original collectors": the combination is optional, and those who want to stay compliant on the road can stick to the homologated silencer while keeping the standard collectors.

Who it's perfect for

For those who take their F 800 GS to the track or on closed circuit days and have already installed an Arrow silencer: the racing collectors are the step that completes the system and frees up the section upstream of the silencer. However, those who use the motorcycle on the road should keep them off the list: without homologation, the motorcycle is not compliant and will not pass inspection.

Frequently Asked Questions

Are the 71407MI collectors homologated?
No. On the model page of the Arrow catalog, this code is marked Racing, and the official Arrow legend defines that mark as: does not comply with any regulations, is not approved for road use, is only usable on closed circuits. They should therefore be considered a part for track use.

Which BMWs do they fit?
On BMW F 800 GS and F 800 GS Adventure from the 2008-2016 series, which Arrow identifies with vehicle type E8GS. This is the only application provided by the official catalog for this code: subsequent F 800 GS models, from 2017 onwards, have a different vehicle type and different codes.

What's the difference compared to the original collectors?
The Arrow collectors replace the entire standard assembly with a 2:1 stainless steel system that merges into a single 54 mm outlet. They retain the lambda sensor housing, do not include a CO sensor housing, and do not have a db-killer. The assembly weighs 2.61 kg.

Which silencers do they pair with?
With the two Maxi Race-Tech silencers with carbon end caps provided by Arrow for this motorcycle: the 72612AK in natural aluminum and the 72612AKN in "Dark" aluminum, both homologated. However, the Arrow diagram warns that these silencers also fit on the original collectors, so the pairing is not mandatory.

What are their measurements and weight?
Arrow declares an outlet diameter of 54 mm and a weight of 2.61 kg for the assembly. The body is entirely made of stainless steel. The length and insertion diameter are not among the data published by the manufacturer, so we do not report them.

Are they strictly necessary to install an Arrow silencer?
No. The official mounting diagram connects collectors and silencer with a dashed arrow and adds the note "silencers also fit on original collectors": the connection is optional. The racing collectors serve to complete the system on the track, not to make the silencer mountable.