Custom BMW R100RT by Upcycle Garage

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This custom BMW motorcycle is one of two cafe racers recently designed and constructed by the seller’s workshop, Upcycle Garage. Finished in two-tone green with a leather solo seat, the bike started out as a 1988 R100RT with a monolever swingarm. It now features an R90S-style quarter fairing, a Kawasaki ZX-6R front end, custom rear sets, and LED lighting. The 980cc opposed-twin is paired with a five-speed gearbox and equipped with a high-mount, 2-into-1 exhaust system. Modern electronics and instrumentation were sourced from motogadget, including their motoscope pro display and m.unit digital control panel. This custom R100 is now being offered with a clear California title.

Custom BMW R100RT by Upcycle Garage

AirTech Streamlining supplied the R90S-style fairing, which the seller re-profiled and modified with a single, offset headlamp. The two-tone seafoam green finish features white accent striping. Black powder coat has been applied to the frame and swingarm, and a stitched leather solo seat is supported by a custom subframe with LED lights integrated below. Front turn indicators are positioned on the handlebars, and the BMW roundels have been deleted from the fuel tank.

Custom BMW R100RT by Upcycle Garage

The 18” factory front wheel and twin brake rotors have been adapted to an inverted fork sourced from a donor 2007 Kawasaki ZX-6R with Nissin radial calipers. Rider controls include low-mount, clip-on handlebars and custom rear sets. An upgraded rear shock with a remote reservoir was sourced from Öhlins.

Custom BMW R100RT by Upcycle Garage

A motogadget m-unit replaces a traditional fuse panel, and a Shorai lithium-ion battery is located below the gearbox. Instrumentation is provided by a motoscope pro digital multifunction display, also from motogadget and secured to the upper triple tree.

Custom BMW R100RT by Upcycle Garage

The 980cc opposed-twin is paired with a five-speed gearbox and enclosed driveshaft. A streamlined cover from BMW-Bayer replaces the factory top cover and airbox, while the engine and gearbox cases have been painted gloss black. The 2-into-1 stainless headers are designed to hug the engine and are constructed with TIG-welded pie sections. A single Akrapovič silencer is mounted below the seat.

Custom BMW R100RT by Upcycle Garage

BIKEEXIF.com and ForRide.jp have featured both of the seller’s custom-built BMWs. The metallic silver R100RS is also currently being auctioned on BaT

No Reserve: 1977 Honda CB550K Four

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This 1977 Honda CB550K was recently acquired by the selling dealer from the believed third owner. The bike is powered by a 544cc SOHC 4-cylinder with a 5-speed transmission, and the seller recently performed a tune-up with a carburetor rebuild and adjustments to the cam chain, valves, and ignition timing. A new ignition switch was also fitted, and the battery, chain, and seat cover were replaced. 12k miles are currently shown, of which the seller has added approximately 50. This CB550 is offered by the selling dealer at no reserve with the owner’s manual, factory tool kit, and a clean Wisconsin title.

No Reserve: 1977 Honda CB550K Four

Finished in Excel Black with red and gold striping, the bike features a 4-into-4 exhaust and a replica seat cover and hand grips. The right side cover noted to have holes for a zip tie to hold it in place, and the lower fork tubes show oxidation to the aluminum finish. Chrome wire spoke wheels wear tires that are believed to be 3 or 4 years old.

No Reserve: 1977 Honda CB550K Four

The instrument cluster contains a 150-mph speedometer and a tachometer with a 9k-rpm red line. The face of the tachometer appears faded, and the seller notes a replacement ignition switch has been fitted. Just under 13k miles are shown on the odometer.

No Reserve: 1977 Honda CB550K Four

The 544cc SOHC 4-cylinder was rated at 50 horsepower when new and is coupled with a 5-speed transmission. The seller recently rebuilt the carburetors with new seals and performed a tune up consisting of new spark plugs, an oil change, and adjustments to the cam chain tensioner, valves, and ignition timing. The drive chain and battery were also replaced, but no previous service records are available. A walk-around video can be seen below.

No Reserve: 1959 Harley-Davidson Hummer 125

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This 1959 Harley-Davidson Hummer is a 125cc single-cylinder two-stroke motorcycle based on the DKW RT125. Following the Second World War DKW’s patents were released to the allies, and copies of the DKW were also made in the UK as the BSA Bantam, and in the Soviet Union as the MMZ M-1A Moskva, or Minsk.  This example has been with the current owner for 15 years, and a recent engine rebuild, reportedly with new-old-stock parts, included a new piston, bearings, and seals. This Harley-Davidson Hummer is now offered at no reserve on behalf of the current owner with an Oregon bill of sale.

No Reserve: 1959 Harley-Davidson Hummer 125

Though the American-made, single-cylinder two-stroke bikes are colloquially known as Hummers, only the lightweight 125cc Harley models made from 1955-1959 were actually branded as such. The basic DKW design was outfitted with a Harley-designed tank and fenders upon release as the Model 125 in 1948. This example is finished in red with white accents and a black frame and per the seller, has not been refinished.

No Reserve: 1959 Harley-Davidson Hummer 125

The bike is equipped with a rigid rear-end and a sprung seat at the rear, and a telescopic front fork which was introduced in 1951. Braking is handled by mechanical drums front and rear, and the 18″ wheels are finished in black and fitted with 3.50″ Firestone tires.

No Reserve: 1959 Harley-Davidson Hummer 125

This model is not equipped with a speedometer or a battery, and the upper plate on the triple clamp carries the Hummer name. Handlebar mounted controls include just a hand throttle and the clutch and brake levers. The seller estimates that about 3,000 miles have been added under current ownership.

No Reserve: 1959 Harley-Davidson Hummer 125

While Harley’s other DKW-based models moved to a 165cc engine in 1953, the Hummer model carried over the earlier 125cc powerplant, which is paired with a 3-speed transmission. Hummers were built with a basic electrical system, with magneto ignition and no battery. This example was recently rebuilt by the current owner with a new piston, bearings, and seals. A factory air filter assembly has been retained, and close-up photos are provided of the engine case, cooling fins, and other driveline components.

A cold-start video is viewable above.

No Reserve: 1995 Ducati 916

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This 1995 Ducati 916 was purchased new in New York and traded to the selling dealer one month ago for a vintage convertible. Powered by a fuel injected 916cc V-twin with a 6-speed transmission, the bike features the addition of a Corbin seat and carbon fiber silencers. A new battery was recently fitted, and the timing belts, tires, rear axle, and temperature gauge were replaced by the previous owner. Now showing just over 8k miles, this 916 is offered at no reserve by the selling dealer in Canada with a clean Ontario title.

No Reserve: 1995 Ducati 916

The 916 featured a chrome-moly trellis frame with a single-sided swingarm and under seat exhaust. This example is finished in Ducati red and features an adjustable Ohlins shock, an aftermarket Corbin seat, and slip-on carbon fiber silencers. The rear axle and both tires were replaced under previous ownership, and the seller recently installed a new battery.

No Reserve: 1995 Ducati 916

The front end is equipped with Showa forks and dual Brembo 320mm discs with 4-piston calipers.

No Reserve: 1995 Ducati 916

Instrumentation consists of a 180-mph speedometer, a 13k-rpm tachometer, and a water temperature gauge. 8k miles are shown on the 5-digit odometer.

No Reserve: 1995 Ducati 916

The liquid-cooled 916cc V-twin produced 114 horsepower when new and features fuel injection, desmodromic valves, and 4-valve cylinder heads. A 6-speed transmission transfers power to the rear wheel via chain drive, and service receipts from the previous owner are said to document replacement of the timing belts,
 brake light switch,
 temperature gauge, spark plugs, and adjustment of the valves.

No Reserve: 1982 Honda CB650SC Nighthawk

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This 1982 Honda CB650SC Nighthawk was recently acquired by the selling dealer from the believed third owner. Powered by a 626cc SOHC 4-cylinder with a 5-speed transmission, the bike is a one-year-only model with a single cam and chain drive. The tires, battery, and chain were recently replaced by the seller, and the seat cover, grips, and mirrors replaced under previous ownership. 16k miles are currently shown, of which the seller has added approximately 50. This Nighthawk is offered by the selling dealer at no reserve with a factory tool kit and a clean Pennsylvania title.

No Reserve: 1982 Honda CB650SC Nighthawk

The Nighthawk was the successor to the CB650 Custom, and this example is finished in Candy Flair Blue with chrome striping. The seller notes that paint chips are visible on the fuel tank, and corrosion can be seen on the center stand, kick stand, and passenger pegs. A replica seat cover and hand grips are fitted, and the mirrors are aftermarket items.

No Reserve: 1982 Honda CB650SC Nighthawk

Features include a 4-into-4 exhaust, adjustable shocks, and air assisted forks. A new drive chain is fitted, and the Comstar wheels wear new tires.

No Reserve: 1982 Honda CB650SC Nighthawk

Instrumentation consists of an 85-mph speedometer and a 10k-rpm tachometer with a centrally-mounted odometer. 16k miles are currently shown.

No Reserve: 1982 Honda CB650SC Nighthawk

This first year Nighthawk was unique with a 626cc SOHC 4-cylinder engine, 5-speed transmission, and chain drive. The engine was factory rated at 62 horsepower and features include four 26mm Keihin carburetors and an electronic ignition. No service records are available, but the seller performed a mechanical inspection, added a new battery and spark plugs, and changed the oil. A walk-around video with the bike running can be seen below.

No Reserve: 1982 Honda CB900C Custom

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This 1982 Honda CB900C Custom was traded by the first owner to the selling dealer 6 months ago. The bike is powered by a 902cc DOHC 4-cylinder with a dual range 5-speed transmission and shaft drive, and the selling dealer recently performed a mechanical inspection with new spark plugs and an oil change. Just under 13k miles are shown, and the seller has added approximately 200 since the work was completed. This CB900C is now offered by the selling dealer at no reserve with the owner’s manual, factory tool kit, and a rebuilt Wisconsin title.

No Reserve: 1982 Honda CB900C Custom

The bike is finished in Candy Empire Blue, and the seat and fuel tank were reportedly replaced in 1990 due to vandalism, resulting in the rebuilt title. Features include a 4-into-4 exhaust, triple disc brakes, and air adjustable suspension.

No Reserve: 1982 Honda CB900C Custom

The front end features air assisted forks and dual 280mm brake discs with twin piston calipers. Comstar wheels wear older tires.

No Reserve: 1982 Honda CB900C Custom

The instrument cluster contains an 85-mph speedometer, a 10k-rpm tachometer, and various warning lights. Just under 13k miles are shown on the 5-digit odometer.

No Reserve: 1982 Honda CB900C Custom

The 902cc DOHC 4-cylinder was factory rated at 84 horsepower and features 4-valves per cylinder, 32mm Keihin carburetors, and electronic ignition. A dual range 5-speed transmission offers a high and low range resulting in 10 gear choices, and power is transferred to the rear wheel via shaft drive. The underside of the mufflers shows corrosion and signs of a previous welding repair. No service records are available, but the selling dealer has performed a mechanical inspection with new spark plugs and an oil change. A walk around video can be seen below.

Square Four w/ Double Adult: 1954 Ariel “Squariel” & Tandem Sidecar

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This 1954 Ariel Square Four comes attached to an ultra-cool Canterbury tandem seat sidecar and what looks like most of its original furnishings. Powered by one of the most unusual engines ever dropped between two wheels, the “Squariel” features what’s in essence two OHC parallel twins occupying the same crankcase. These MkIIs (introduced the previous year) had separate cylinder barrels and four exhaust pipes as opposed to the monobloc and twin pipe setup of the MkI, but both designs utilized dual, geared crankshafts and a single cylinder head, and Squariels were some of the fastest bikes in Europe during the era. This one looks like it could be a survivor or an older restoration–either way it’s super cool, super unusual and would likely be a great way to strike up conversations at your next local cruise-in. Find it here at Yesterdays in Nederweert, Netherlands for 14,950 euros (~$16,500 USD today). Special thanks to BaT reader Kyle K. for this submission.

Square Four w/ Double Adult: 1954 Ariel "Squariel" & Tandem Sidecar

The pair exhibit the sort of warm, gentle patina typical of machinery left unattended in a clean, quiet corner of a garage or workshop for a long time–virtually all of brightwork is dulled and paint could use a good compounding, but there’s nothing which suggests that the duo have been neglected or abused. No word is given on when the bike was last started or taken out on the road.

Square Four w/ Double Adult: 1954 Ariel "Squariel" & Tandem Sidecar

There were a large number of sidecar manufacturers in Postwar Britain, and Canterbury and Watsonian were two of the more prominent. These rather awkwardly named “Double Adult” models were constructed over a steel tube frame and featured tandem bench seating for two, a single entry door, a small trunk, no less than seven windows, and a removable canvas roof for the occasional sunny day. An outboard wheel brake was an available option, but it’s not clear whether this one is so equipped.

Square Four w/ Double Adult: 1954 Ariel "Squariel" & Tandem Sidecar

The door looks big enough for easy entry, and we’re guessing the front seat back folds down for access to the rear bench. Legroom for both occupants looks generous, with a bit of extra room for a couple of small bags.

Square Four w/ Double Adult: 1954 Ariel "Squariel" & Tandem Sidecar

The engine is essentially two parallel twins sharing a crankcase. It displaces 1000cc and powers the Ariel with roughly 40 horsepower and a good deal of torque–these machines were known to be capable of getting underway from a standstill in top (4th) gear. They could also easily surpass the 100 mph mark, though we’d imagine even going half that speed in a flimsy old sidecar would be equal parts fun and terrifying.

1,660-Mile 2006 Ducati Paul Smart 1000LE

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This 2006 Ducati Paul Smart 1000LE is finished in silver with a green frame and is one of approximately 2,000 built to commemorate racer Paul Smart’s win at Imola in 1972. The Paul Smart model was part of Ducati’s SportClassic series, and is powered by a 992cc 90-degree twin with desmodromic valve drive and two-valves per cylinder. The bike was first sold by Big Twin Cycles in Boise, Idaho, and the seller acquired it from the original owner in 2016. A Termignoni exhaust is equipped, and maintenance under current ownership has included new drive belts, fuel lines, fuel pump seals, and a recent oil and filter change. This Ducati is offered with a replacement fuel tank, factory keys, and a clean Idaho title in the seller’s name.

1,660-Mile 2006 Ducati Paul Smart 1000LE

Like Paul Smart’s 1972 Imola 200km bike, the Paul Smart 1000LE is finished in silver with a blue-green steel trellis frame. The bike is equipped with a front bikini faring, a solo seat with faring, and an exposed engine and transmission. The seller notes that the factory fuel tank has swollen, though it remains within the bounds of the tank pucks as shown in the gallery. A replacement fuel tank is included.

1,660-Mile 2006 Ducati Paul Smart 1000LE

The front forks and single rear coilover assembly are adjustable units from Öhlins. The spoked wheels are equipped with aluminum hoops, and braking is handled by twin front and a single rear Brembo disc brake. Older Pirelli Phantom Sportscomp tires are fitted.

1,660-Mile 2006 Ducati Paul Smart 1000LE

The rear clamshell has been signed by Paul Smart and shows his race number for the 1972 Imola event. The seller had the clamshell clear-coated to protect the signature. Intact warning labels and other markings are shown in the gallery below.

1,660-Mile 2006 Ducati Paul Smart 1000LE

The bike is equipped with clip-on handlebars, and the controls and fluid reservoirs are shown in the gallery. Analog instrumentation consists of a 160-mph speedometer and an 11k-rpm tachometer, with a small metal panel housing the warning lights mounted between the gauges. Approximately 1,660 miles are shown on the digital odometer.

1,660-Mile 2006 Ducati Paul Smart 1000LE

The air-cooled 992cc 90-degree twin with desmodromic valve actuation and two valves per cylinder. The bike was factory rated at 92 horsepower and 67 lb-ft of torque, which is sent to the rear wheel via a 6-speed transmission with chain drive. The bike is equipped with a Termignoni exhaust system and fuel map installed by Big Twin Cycle. Under current ownership the bike has received new timing belts, and the fuel lines and fuel pump seals were recently replaced.

1,660-Mile 2006 Ducati Paul Smart 1000LE

Three factory keys and the key code card are pictured above, and a walk-around video is viewable below.

No Reserve: 1969 Triumph Bonneville T120

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This 1969 Triumph Bonneville T120 was refurbished by the previous owner in Colorado just prior to the seller’s purchase two years ago. The 650cc parallel twin and 4-speed transmission were overhauled by Vintage Twins of Arvada, who also fitted new Amal Concentric carburetors, Boyer electronic ignition, .020″ over pistons, and more detailed in the listing, with additional contributions by The Bonneville Shop in Lousville, Colorado. This Bonneville is offered with records of the refurbishment and a clean Colorado title in the seller’s name.

No Reserve: 1969 Triumph Bonneville T120

The bike has been repainted in orange and silver over a black frame, with black side covers carrying the Bonneville name. The bike retains a factory-style exhaust system with peashooter silencers, as well as factory head and tail lamp assemblies.

No Reserve: 1969 Triumph Bonneville T120

Vintage twins rebuilt the front shock assemblies and fitted new seals. Dunlop Gold Seal K70 tires were also mounted on the 19″ front and 18″ rear spoked wheels. Braking is handled by a twin leading shoe drum at the front and a single expanding drum at the rear.

No Reserve: 1969 Triumph Bonneville T120

Instrumentation includes a 120-mph speedometer and a 10k-rpm tachometer, with a charging gauge mounted in the headlamp housing. The 5-digit odometer shows 97 miles, though the seller reports that he has added about 120 miles during his ownership.

No Reserve: 1969 Triumph Bonneville T120

The 650cc parallel twin was overhauled by Vintage Twins of Arvada, including new .020″ over pistons, stock-sized rod bearings, valves and guides, a copper head gasket, and more detailed on a pair of attached documents. The seller reports that new engine side covers were fitted, and the bike is equipped with Boyer electronic ignition and replacement Amal concentric carburetors. The 4-speed transmission and clutch were also serviced by Vintage Twins.

No Reserve: 1969 Triumph Bonneville T120

A sample of records from Vintage Twins of Arvada and The Bonneville Shop is provided in the gallery below. A video from the seller showing startup is viewable below.

No Reserve: 1982 BMW R100RT

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This 1982 BMW R100RT was sold new at Country Cycle Shop in Montoursville, Pennsylvania and was acquired by the seller 3 years ago from the believed first owner. The bike is powered by a 980cc opposed twin with a 5-speed transmission and shaft drive, and the seller has fitted new handlebars, shocks, and a fresh battery. In preparation for sale the seller cleaned the carburetors, re-torqued the cylinder heads, and adjusted the valves. 29k miles are shown, of which the seller has added approximately 2,500. This R100RT is now offered at no reserve with the factory tool kit, owner’s manual, and a clean South Carolina title in the seller’s name.

No Reserve: 1982 BMW R100RT

The bike is finished in black with red and white striping, and the seller has replaced the handlebars and added aftermarket Ikon shocks. Stone chips are noted on the fairing, along with paint blemishes near the base of the left mirror and spider cracks on the lower corner of the windscreen. The paint at the rear of the fuel tank is worn from contact with the seat, which the seller notes is visible only when the seat is open.

No Reserve: 1982 BMW R100RT

Instrumentation consists of an 85-mph speedometer, a tachometer with a 7k-rpm redline, a volt meter, and a clock. The fairing also contains ventilation and dual storage compartments. 29k miles are shown on the odometer.

No Reserve: 1982 BMW R100RT

The front end features Brembo brakes with dual drilled discs and fresh brake fluid. BMW cast alloy “snowflake” wheels wear Avon Road Rider tires that are reportedly less than 
one year old.

No Reserve: 1982 BMW R100RT

The air-cooled 980cc opposed twin was factory rated at 70 horsepower and features dual 40mm Bing carburetors. A 5-speed transmission transfers power though a drive shaft to a 32/11 final drive. Recent work performed by the seller included cleaning and synchronizing the carburetors, re-torqing the cylinder heads, and adjusting the valves. An Odyssey battery was fitted, and the oil pan gasket and lubricants replaced. No service records are available, but the prior owner kept notation of the services performed in the owner’s manual. Walk around, cold start, and riding videos are provided below.