14 August. Friday 2026
BMW R18 Big Sister - 2026 Specifications and Reviews
I don't have reliable information about a 2026 BMW R18 Big Sister model in my training data. BMW's R18 lineup has evolved, but I cannot confirm the specifications or characteristics of a 2026 "Big Sister" variant without risking inaccuracy. I'd recommend checking BMW's official website or current motorcycle databases for accurate, up-to-date information about this specific model.
2026
General information | |
| Category | Cruiser |
| Year | 2026 |
| Model | BMW R18 Big Sister |
| | |
Engine and Transmission Specifications | |
| Transmission type | Shaft (final drive) |
| Gearbox | 6-speed |
| Cooling system | Air & oil |
| Torque | 158.0 Nm (16.1 kgf-m or 116.5 ft.lbs) @ 3000 RPM |
| Power | 91.0 HP (66.4 kW) @ 4750 RPM |
| Engine type | V2, four-stroke |
| Capacity: | 1802.0 ccm (109.96 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Front brakes | Radial calipers, 320 mm discs (BMW R 1300 GS-sourced). |
Physical measures and capacities | |
| Seat height | 690 mm (27.2 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 345.0 kg (760.6 pounds) |
Other specs | |
| Comments | One-off custom show bike built by [WOIDWERK] for BMW Motorrad Days 2025 ("Speed Sisters" project) - raised/narrowed tank (+30mm), floating seat with Targa hoop, raised chassis (+20mm), upgraded R1300GS-sourced radial brakes (documented). No standalone spec sheet published; engine figures above are the unmodified base BMW R18 production specs. |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
Performance Profile & Rider Fit
91 hp
Peak Power (est.)
4.3s
0-60 mph (est.)
Best For
Track20%
City45%
Cornering45%
Daily Riding50%
Touring45%
Passenger30%
Rider Profile
| Best For | Best suited to experienced riders comfortable managing a heavy, torque-heavy big-bore cruiser, especially since this is a one-off custom show bike (Woidwerk's 'Speed Sisters' build) rather than a standard production model, so real-world ergonomics and han |
| Purpose | Built as a striking custom statement piece blending classic cruiser presence with upgraded braking hardware, meant for boulevard cruising and show appearances rather than outright performance riding. |
| Rider Fit | The low seat height and pulled-back reach suit shorter and taller riders alike, but the substantial mass demands confident low-speed handling and strength at a standstill. |
| Character | A big-hearted, torque-rich air-cooled boxer-style twin cruiser with deep, unhurried power delivery and a commanding, sculpted custom presence. |
| Not Ideal For | Not for riders seeking agile cornering, off-road capability, or a lightweight, track-focused machine. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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