⟲ 360° — drag meThe facts.
| Brand | Akrapovic |
|---|---|
| Part number | S-B10SO9-CUBT |
| Fitment | BMW S 1000 R and M 1000 R (2017–2020) |
| Line | Slip-On Line (Titanium) |
| Material | Titanium |
| Weight | 1.1 kg (stock 2.7 kg, saving 1.6 kg / 59.3 %) |
| Power | gain 1.4 PS at 9,050 rpm (peak 161.9 PS against 161.8 stock) |
| Torque | 114.1 Nm (stock 113.6 Nm, gain 1.3 Nm at 9,000 rpm) |
| Installation | Approx. 40 minutes |
| Road approval | None — track use only |
DescriptionThe whole story▼
One point one kilograms. BMW's standard silencer on the S 1000 R weighs 2.7 kg, which is already light for a Euro-compliant litre bike, and this titanium replacement takes 59.3 per cent of that away.
Key Features
- 1.1 kg against the standard 2.7 kg: 1.6 kg and 59.3 per cent less
- Titanium construction
- 1.4 PS more at 9,050 rpm and 1.3 Nm at 9,000 rpm
- Covers both the S 1000 R and the M 1000 R
- Forty minutes to fit
- No road approval — circuit use only
The Peak Does Not Move
Peak output goes from 161.8 PS to 161.9 — a tenth, which is nothing. The 1.4 PS figure is the gain measured at 9,050 rpm, not an increase in maximum power.
We give both because only one of them describes what happens. A slip-on on a modern litre roadster lifts a section of the curve; it does not raise the ceiling, and any page claiming otherwise is reading its own data selectively.
What You Actually Get
1.6 kg and a change of sound. On an S 1000 R that is a fair proposition — the standard silencer is a large flat box under the tail, and replacing it with a compact titanium unit changes the rear of the motorcycle noticeably.
It is not a performance purchase, and this page will not sell it as one.
S or M
BMW's M 1000 R carries carbon wheels, different suspension and more electronics, and shares the engine and exhaust mounting with the S 1000 R. Both take this silencer. The published figures were taken on the S.
Forty Minutes
Longer than a typical slip-on, because BMW mounts the S 1000 R's silencer under the tail rather than beside it, with the rear bodywork partly over the bracket. The right-hand side panel comes off first.
An Older S 1000 R
These are 2017 to 2020 machines, which makes them used motorcycles today. On a bike past its warranty and its steepest depreciation, a track-only silencer is a more defensible purchase than it would be on something new.
1.6 Kilograms, High and Rearward
The S 1000 R's silencer sits under the tail, behind the rear axle. Weight in that position works against the motorcycle twice: it adds to the total and it sits at the far end of the wheelbase, where it resists changes of direction most.
That is why 1.6 kg from here is worth more than 1.6 kg from anywhere central.
Titanium Throughout
No carbon end cap here — the whole silencer is titanium. On a bike whose standard unit already weighs only 2.7 kg, the material had to do all the work, and titanium is what gets 59.3 per cent out of a part that was never heavy.
Fitment and Compatibility
S-B10SO9-CUBT covers the BMW S 1000 R and M 1000 R from 2017 through 2020. BMW revised the S 1000 R for 2021, and later machines take a different part.
Road Approval
None. This product does not meet emission compliance requirements for street or highway use.
Specifications
- Part number: S-B10SO9-CUBT
- EAN: 3831113545372
- Fitment: BMW S 1000 R, M 1000 R (2017–2020)
- Line: Slip-On Line (Titanium)
- Material: titanium
- Weight: 1.1 kg (stock 2.7 kg, saving 1.6 kg / 59.3 %)
- Power: gain 1.4 PS at 9,050 rpm; peak 161.9 PS against 161.8 stock
- Torque: 114.1 Nm (stock 113.6 Nm, gain 1.3 Nm at 9,000 rpm)
- Installation time: approx. 40 minutes
- Road approval: none — track use only
- Country of manufacture: Slovenia
FitmentWhich bikes this fits▼
- BMW S 1000 R (2017–2020)
- BMW M 1000 R
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Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
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