Akrapovic exhaust BMW R1250R S-B12SO22-HALAGTBL 360° — drag me
5.28 k g
02 · Data & docs

The facts.

Technical data
BrandAkrapovic
Part numberS-B12SO22-HALAGTBL
FitmentBMW R 1250 R and R 1250 RS (2019–2024)
System typeSlip-on silencer, black coated
Weight5.28 kg (stock 5.43 kg, saving 0.15 kg / 2.8 %)
Power133.9 PS at 7,700 rpm (stock 132.7 PS, gain 2.4 PS / 1.8 kW at 3,650 rpm)
Torque139.1 Nm (stock 138.2 Nm, gain 4.7 Nm at 3,650 rpm)
Side casesCompatible with the BMW side cases
Installation timeApprox. 30 minutes
Road approvalEC type approval and ECE type approval
DescriptionThe whole story

Four point seven newton metres and 2.4 PS, both at 3,650 rpm. On a boxer twin that is exactly where the engine lives, and it is by some margin the most useful gain of any type-approved slip-on for this machine. What this system does not do is save weight — and that is said here up front rather than buried.

Key Features

  • 4.7 Nm more torque and 2.4 PS (1.8 kW) more power, both measured at 3,650 rpm — the working range of a 1,254 cc boxer
  • Peak torque crosses 139 Nm: 139.1 Nm against the standard 138.2 Nm
  • Black-coated titanium muffler, shaped to sit inside the lines of the R and RS
  • Compatible with the BMW side cases
  • EC and ECE type approved, certificates supplied
  • Noise insert included, installation about 30 minutes with no remapping
  • Two optional headers available for owners who want to go further

The Weight, Honestly

5.28 kg against the standard 5.43 kg — 150 grams, or 2.8 per cent. That is not a weight saving in any meaningful sense, and this page is not going to call it one. BMW's standard silencer on the R 1250 R is already a relatively light unit, so there was little to take out.

The argument for this exhaust is the torque low down, the black-coated titanium finish, and the sound. If a large weight reduction is what you are after, a full system is the honest answer, not this.

R and RS, and the Bike on the Dyno

The R 1250 R and the R 1250 RS are the same motorcycle with different clothes: identical ShiftCam boxer, identical frame, one naked and one half-faired with a taller screen and a longer tank cover. The silencer bolts to the same point on both.

Akrapovic measured on a 2019 R 1250 R, the naked version and the first year of the ShiftCam engine. The RS shares that engine exactly, so the figures transfer, and the black-coated finish was drawn to work against both the R's exposed frame and the RS's bodywork. Installation is 30 minutes, needs no remapping, and the standard silencer goes back on just as quickly.

Fitment and Compatibility

S-B12SO22-HALAGTBL covers the BMW R 1250 R and R 1250 RS from model year 2019 through 2024. The BMW side case system mounts over it unchanged. Two optional headers are available separately: E-B12R7/1 in stainless steel and E-B12E4/1 in titanium; fitting either ends the type approval of the silencer.

Road Approval

EC type approval and ECE type approval, with the certificates supplied and downloadable here. Fitted on its own, without an optional header, the silencer is a legal road part in the European Union.

Specifications

  • Part number: S-B12SO22-HALAGTBL
  • EAN: 3831113569231
  • Fitment: BMW R 1250 R and R 1250 RS (2019–2024)
  • System type: slip-on silencer
  • Material: titanium, black coated
  • System weight: 5.28 kg (stock 5.43 kg, saving 0.15 kg / 2.8 %)
  • Power: 133.9 PS at 7,700 rpm (stock 132.7 PS, gain 2.4 PS / 1.8 kW at 3,650 rpm)
  • Torque: 139.1 Nm (stock 138.2 Nm at 6,600 rpm, gain 4.7 Nm at 3,650 rpm)
  • Noise insert: included
  • Side case compatible: yes
  • Installation time: approx. 30 minutes
  • Road approval: EC type approval and ECE type approval
  • Country of manufacture: Slovenia
FitmentWhich bikes this fits
  • BMW R 1250 R (2019–2024)
  • BMW R 1250 RS (2019–2024)
07 · Support

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