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Bike Specs

BMW Motorrad specs

The R 18 Big Boxer cruiser and the R nineT / R 12 nineT heritage roadsters.

R 18Big Boxer 1802

The R 18 is BMW Motorrad's return to a classic large-capacity cruiser, built around the 1,802cc air/oil-cooled "Big Boxer" twin, the largest boxer BMW has produced. It pairs exposed shaft drive and a double-loop steel frame with retro styling nodding to the 1936 R 5. The core R 18 is the stripped bar-and-shield roadster-cruiser; touring variants (Classic, B, Transcontinental) share the engine but add bodywork.

EngineAir/oil-cooled two-cylinder four-stroke "Big Boxer", two chain-driven camshafts, OHV
Displacement1,802cc
Bore x Stroke107.1 x 100 mm (4.22 x 3.94 in)
Compression Ratio9.6:1
Horsepower91 HP (67 kW) @ 4,750 rpm
Torque158 Nm (117 lb-ft) @ 3,000 rpm
Fuel SystemElectronic intake-pipe injection, digital engine management, electronic throttle (ride-by-wire)
Transmission6-speed constant-mesh; single-disc dry clutch
Final DriveShaft (exposed cardan)
FrameDouble-loop tubular steel with bolted rear section
Front Tyre120/70 R19
Rear Tyre180/65 B16
Front SuspensionTelescopic fork, 49 mm, 120 mm travel
Rear SuspensionCantilever swingarm with central spring strut, 90 mm travel
Front BrakeTwin 300 mm discs, 4-piston fixed calipers
Rear BrakeSingle 300 mm disc, 4-piston fixed caliper
Wheelbase1,731 mm (68.1 in)
Seat Height690 mm (27.2 in)
Wet Weight345 kg (761 lb), fully fuelled
Fuel Tank16 L (4.2 US gal)
ABSBMW Motorrad Integral ABS (partial-integral, front lever actuates both)
Rider AidsASC traction control and MSR engine-drag control standard; Hill Start Control and Reverse Assist optional; Keyless Ride
Riding ModesRain, Roll, Rock
MSRPapprox US$17,495 (2021 base)
Notes & conventions
  • •Australian/British spelling used throughout (tyre, aluminium, colour).
  • •Metric-first with imperial in parentheses; BMW quotes crank output.
  • •Final drive is shaft (cardan/Paralever) on every model listed.
  • •Figures are for the base/core model of each family; variants (R 18 Classic/B/Transcontinental, R nineT Pure/Scrambler/Urban G/S) differ.
  • •MSRP is approximate launch USD for the noted model year and excludes freight/options.

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