SHOCKING Truth About Akrapovic BMW GS Silencers EXPOSED

Don't waste your money on an Akrapovic muffler / silencer. Yes, it reduces weight, but is very thin and will break with aggressive riding. The deleted headers and mid pipe is all you need with the stock muffler / silencer.

BMW F 850 GS with Akrapovic slip on series parallel-twin
Manufacturer BMW Motorrad
Production F800GS (2008–19)
F800GSA (2013–19)
Predecessor F650GS (single-cylinder)
Successor BMW F850GS
Class Dual-sport
Engine 798 cc (48.7 cu in), parallel-twin, water cooled, 4-stroke, DOHC, 8 valves
Bore / stroke 82 mm × 75.6 mm (3.23 in × 2.98 in)
Compression ratio 12.0:1
Top speed 200 km/h (120 mph) (F800)[1]
Power 63 kW (85 hp) @ 7,500 rpm (F800)[1]
Torque 83 N⋅m (61 lbf⋅ft) @ 5,750 rpm (F800)[1]
Transmission 6-speed
Suspension Front:
Telescopic fork, Ø 45mm, 230mm travel (F800)
Rear:

Dual swing arm, WAD strut, adjustable spring pre-load and rebound damping, 215mm travel (F800)
Dual swing arm, spring strut, adjustable spring pre-load and rebound damping, 170mm travel (F700/650)
Electronic Suspension Adjustment (ESA) optional (2013–)
Brakes Front:
Twin 300mm floating discs, dual piston floating calipers (F800/700)

Rear:

265mm disc, single piston floating caliper
ABS (optional before 2013)
Tyres Front:
90/90-21, spoked wheel, tubed tyre (F800)
Rear:

150/70-17, spoked wheel, tubed tyre (F800)
Wheelbase 1,578 mm (62.1 in) (F800)
Dimensions L:
2,320 mm (91 in) (F800)
945 mm (37.2 in) (F800)
H:
1,350 mm (53 in) (F800)
Seat height 880 mm (35 in) (F800)
214 kg (472 lb) (F800, 2013–)
207 kg (456 lb) (F800, 2008–12)
Fuel capacity 16 L (3.5 imp gal; 4.2 US gal)
Related F800GT, F800ST, F800S, F800R
The BMW F series is a family of parallel-twin engine dual-sport motorcycles manufactured in Berlin, Germany by BMW Motorrad. Launched in 2008, the range comprises the F650GS, F700GS, F800GS, and F800GSA. In 2012, the F700GS replaced the discontinued F650GS, and in 2013, the F800GSA was introduced with a 24-litre (5.3 imp gal; 6.3 US gal) fuel tank and a larger front fairing and screen. The F800GT and F800S both have belt drive.

Models
Contrary to industry convention, each model's "number" does not refer to the engine capacity. Instead, each bike in the F-series range uses essentially the same 798 cc (48.7 cu in) engine, but with different power outputs and equipment levels. The parallel-twin engine was first used in the F800S,[4] and is also used in the F800GT, F800R and F800ST, although these bikes are tuned to deliver peak power at a different RPM from the GS models. The GS models have longer suspension travel, needed for offroad use.[5]
Although all bikes use the same basic engine, the F800 produces 85 hp (63 kW), which is 10 hp (7.5 kW) more power than the F700 and 14 hp (10 kW) more than the discontinued F650. Engines on both the F800 and F700 can be modified to deliver a reduced power output of 35 kW (47 hp) for European riders on restricted Category A2 licences.[6]
The F800 and F700 are fitted with twin brake discs on the front while the F650 was fitted with one disc.[5] Both bikes had anti-lock brakes (ABS), which were optional on the F800 before 2013 models and all years of the F650.
Previously, only the F650 had the option of lowered suspension,[7] which was not available on F800 models up to 2012. From 2013, both the F800 and F700 can be specified with a low seat and/or lowered suspension, the combination of which reduces seat height to 820–850 mm (32–33 in) (F800) or 765–790 mm (30.1–31.1 in) (F700), and makes the bikes suitable for shorter riders.
Special editions
F800GS Adventure (2013+)
Includes a larger 24 litre fuel tank, reinforced rear sub-frame.
F800GS Trophy (2012)
Desert Blue and Alpine White paintwork, Black and Rally Grey seat, aluminium engine guard plate and hand protectors with large spoilers.[8]
F800GS "30 Years GS" (2010)
Alpine White paintwork with white/blue/red decals, red seat with embossed GS logo, white direction indicators, aluminium engine guard plate, hand protectors with large spoilers, heated grips, onboard computer and tinted high windscreen.[11]

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