Halcyon 50 #34 (used)


Halcyon 50 #34 
This is a unique opportunity to add one of the rarest Janus motorcycles to your collection. Only 43 Halcyon 50 motorcycles were ever made! This example only has 14 miles on the clock and it won’t last long. 
The 50 is fully road-legal and can be registered in all states, excluding California (yep, two-stroke).


This product is currently out of stock and unavailable.

SKU: halcyon-50-34 Categories: ,


Halcyon 50 #34 is for sale!
The Halcyon 50 was the first Janus model and the origin of the Halcyon concept of a modern, lightweight, classically-styled motorcycle that has defined the brand from day one. Beginning in the spring of 2012, we built a total of forty-three Halcyon 50’s, with the last 50 leaving our shop in 2015. This 50 was built in 2014 and is production number 34. It features all of the improvements we made to the 50cc model over the years, including an updated headlight (the same one we use on our 250 and 450 lines), a side stand (early 50’s only had the vintage-style rear center stand), and the second generation mechanical speedometer (yes, this one is in miles per hour, not kilometers like the first bikes). In addition to these improvements, this particular 50 also features a couple of unique upgrades including chromed fenders and headlight, deluxe (polished) fuel and oil tank, a number plate, and a polished battery box.The Halcyon 50 is powered by a 49.9cc, water-cooled, case-inducted two-stroke engine made by the Spanish Derbi brand. It uses a 6-speed unit transmission and puts out a whopping 10hp (and plenty of two-stroke whine) and will top out at 55mph. Carburation is via a 17mm Dellorto PHBG carburetor and the exhaust is a tuned expansion chamber. The bike can be either kick or electrically started, however, the kick is so easy and fun that we rarely use the starter. Fuel and oil are mixed automatically through a small oil pump running off the water pump. The round tank in front of the seat and below the tank is for the two-stroke oil. The 50 is fully road-legal and can be registered in all states, excluding California (yep, two-stroke).

We recently acquired this pristine example from the original owner and are excited to list it for sale. This Halcyon 50 has a whopping 15 miles on the odometer and has been fully factory-restored this fall. It is ready to be added to any collection of unique and rare motorcycles.

Engine & Transmission:

Type: Water-cooled, case-inducted, 2-stroke single

Displacement: 49.9cc

Bore/Stroke: 39.86 X 40mmCarburation: 17mm Dellorto PHVA carburetor

Lubrication: Mechanical oil pump

Starting System: Kick and electric

Exhaust: Tuned expansion chamber with stinger

Final Drive: Chain

Clutch Wet, multi-plate

Gearbox: 6-speed

Fuel Capacity: 3 gallons

Oil capacity: 1 quart

Frame, Running Gear, & Displays:

Frame: Tubular steel cradle

Wheels: Cast aluminum hubs with steel 36-spoke rims


See and hear it in action in this YouTube video:



Shipping is a flat rate of $900 unless within the region. Also available for pickup (free).

Place a $3,750 deposit (non-refundable) to reserve. Balance (including sales tax and shipping if applicable) is due before pickup or shipment.

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