LEGO 857 Motorbike with Sidecar is a vintage Technic set from 1979 valued at $1,511 for new and sealed sets, up 2953% from an original retail price of $49.50. Annual appreciation has averaged 7.55% since release. On the used market, values range from $106 to $132 based on condition.
LEGO 857-1 Motorbike with Sidecar is a Technic set released in 1979, containing 409 pieces. Issued in Europe under the Technical Set series, it builds a motorcycle with a sidecar, a steerable front fork, and a chain-driven 1-cylinder engine. The rear wheel drives the engine through a chain linked to a 16-tooth gear, producing a 3:1 final gear ratio, and turning the wheels makes the piston move up and down. The model uses pinned beams for the angled frame, while standard plates form the fenders and sidecar body, and it was later released in the United States in 1980 as set 8857 under the Expert Builder line.
A new and sealed Motorbike with Sidecar is currently valued at around $1,511, with annual growth of approximately 8%. The average used price is $110 for those in good overall condition. New and sealed listings currently range from $1,487 to $1,619. Based on current trends, this set could be valued near $1,616 within the next year.