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BMW · 1981

1981 BMW R 65

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1981 BMW R 65
Auction record
Average sale
$5,425
Sales
4
Low
$5,000
High
$6,000

Specifications

Category
Classic
Displacement
649.0 ccm (39.60 cubic inches)
Displacement (cc)
649.00
Engine details
Two cylinder boxer, four-stroke
Power
50.0 HP (36.5 kW) @ 7250 RPM
Top speed
175.0 km/h (108.7 mph)
Compression
9.2:1
Bore × stroke
82.0 x 61.5 mm (3.2 x 2.4 inches)
Valves/cyl
2.0
Fuel control
Overhead Valves (OHV)
Cooling
Air
Gearbox
5-speed
Transmission
Shaft drive (cardan) (final drive)
Front tyre
3.25-18
Rear tyre
4.00-18
Front brakes
Single disc
Rear brakes
Expanding brake
Wet weight
204.0 kg (449.7 pounds)
Fuel capacity
22.00 litres (5.81 US gallons)

The 1981 BMW R 65

1981 BMW R 65 sits near the entry point of BMW's Airhead boxer lineup, the smaller-displacement twin built for riders who wanted the marque's engineering without stepping up to the bigger touring machines. This is a bike that rewards patient, all-day riding rather than aggressive acceleration; the boxer twin delivers its power in a broad, easy-going spread that makes shaft-driven cruising on secondary roads feel effortless. Owners describe it as mechanically honest — low-strung, low-maintenance by period standards, and stable at speed thanks to that low center of gravity from the horizontally opposed engine layout. It's a bike you ride, not baby.

The 1981 model carried over without significant mechanical changes from the prior year, buyers comparing it to a 1980 example should focus on mileage, service history, and condition rather than spec differences.

The typical buyer here is a practical classic-bike owner rather than a pure investor: someone who wants a usable, affordable entry into Airhead ownership, perhaps stepping down from a larger modern twin. Collector interest remains moderate, with the 1981 BMW R 65 appealing mainly to riders who value character and heritage over outright rarity.

Auction history

DateListingPriceMileageSource
Jul 25, 2025860cc-Powered 1981 BMW R65$6,000—Bring a Trailer
Jun 18, 2025860cc-Powered 1981 BMW R65$5,600—Bring a Trailer
Apr 11, 2025Modified 1981 BMW R65$5,100—Bring a Trailer
May 12, 20221981 BMW R65$5,000—Bring a Trailer

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