2026BMW R12 Little Sister

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The 2026 BMW R12 Little Sister is a one-off custom show bike built by WOIDWERK for BMW Motorrad Days 2025 as part of the "Speed Sisters" project, not a regular production trim. Starting from the standard air/oil-cooled 1170cc boxer twin (95 HP), the build shortens the rear into a bobber-style tail, raises the chassis 15mm on a Wilbers shock, and adds a custom Alcantara-and-leather seat, sportier bars and a ceramic-coated Hattech exhaust - a styling exercise on the R12 platform rather than a distinct model with its own spec sheet.

Capacity: 1170.0 ccm
Engine: Boxer, four-stroke
Gearbox: 6-speed
Wet weight: 227.0 kg
Seat height: 754 mm
Power: 95.0 HP (69.3 kW) @ 6500 RPM

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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail15%

Cornering60%

City riding68%

Daily riding62%

Touring48%

Two-up40%

Track25%

Best for: It's built as a striking, low-slung boxer cruiser for style-focused street riding and show presence rather than long-distance or performance use.
Built for: It has the torquey, characterful pulse of a BMW boxer twin wrapped in a custom, minimalist bobber aesthetic that prioritizes attitude and visual drama.
Not ideal for: This is not the right choice for riders wanting off-road capability, serious touring range, or a widely available bike with standard aftermarket support.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 754mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2026 BMW R12 Little Sister, with a cramped knee angle of around 80 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine

Capacity: 1170.0 ccm
Power: 95.0 HP (69.3 kW) @ 6500 RPM
Torque: 109.8 Nm (11.2 kgf-m) @ 6000 RPM
Engine type: Boxer, four-stroke
Power/weight ratio: 0.4185 HP/kg (wet)
Bore x stroke: 101.0 x 73.0 mm
Cooling system: Oil & air

Transmission

Gearbox: 6-speed
Transmission type: Manual
Clutch: Dry

Dimensions & weight

Wheelbase: 1520 mm
Seat height: 754 mm
Wet weight: 227.0 kg
Fuel capacity: 14.00 litres
Dry weight: Not on record - add it

Brakes & wheels

Front brakes: Double disc. 310 mm.
Rear brakes: Single disc. 265 mm.

Other

Comments: One-off custom show bike built by [WOIDWERK] for BMW Motorrad Days 2025 ("Speed Sisters" project) - bobber-style rear, raised chassis (+15mm), custom seat/exhaust. No standalone spec sheet was published for the custom build; engine/chassis
Comments: One-off custom show bike built by [WOIDWERK] for BMW Motorrad Days 2025 ("Speed Sisters" project) - bobber-style rear, raised chassis (+15mm), custom seat/exhaust. No standalone spec sheet was published for the custom build; engine/chassis figures above are the unmodified base BMW R12 production specs the custom is built on.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.