Description
14th Feb, 2025 11:00
The February 2025 Auction
1961 Triumph Twenty One
3TA 350cc
Estimate
£2, 000 - £2, 500
Buyer's premium: 18. 00%
Lot details
349cc Twin
Recent rebuild
Part of private collection
Small amount of work needed to finish off
V5
HPI clear
The Triumph Twenty One (also known as the 3TA) is a standard motorcycle made by Triumph Engineering Co Ltd in Coventry. The Model Twenty One was the first of the Triumph unit construction twin cylinder motorcycles. Rebranded as the Triumph 3TA in 1959 it continued in production until 1966 when it was survived by the Triumph T90, its sports version
Launched in 1957 the Model Twenty One was the first of the Triumph unit construction twin cylinder motorcycles from the Meriden factory. With a capacity of 349 cc, the engine was a classic Edward Turner design with a 360 degree crankshaft, twin gear driven camshafts and twin plunger oil pump. The cylinder block was cast iron with an alloy head and separate rocker boxes. The engine was dry sump lubrication and there was a single Amal Monobloc carburettor. Drive was by a conventional four speed gearbox, with a right foot gear lever
The owner has carrier out most of the work needed on this bike…. In his own words
“wheels tyre’s, exhaust, tin wear ok. Engine runs , all gears select , new battery fitted, returns oil, V5c in my name, just needs a little bit of t. l. c. Electrical , ect.
Could be a simple project for someone”.
