Triumph TR4A
Improved old wine in a nice new bottle aptly describes the Triumph TR4. The chassis, for example, came from the TR2/TR3, though handling was improved by three-inch wider tracks and a switch from antique cam-and-lever steering to more precise rack-and-pinion. Up front was a 2.1-liter four that owed much to the sturdy 2.0-liter engine of previous TRs. The same held for the four-speed manual gearbox, though a synchronized first gear struck a blow for modernity.

It may have been little more than a rebodied TR3, but it was that attractive
new body, by Italian Giovanni Michelotti, that made the TR4 special.
Inevitably, the TR4 was heavier and a bit slower than late TR3s, and stiff springing continued to give a rock-hard ride and some unwanted bump-steer. But Triumph had a fix for the latter: independent rear suspension, via coil springs and semitrailing links. It arrived in 1965 for a revised TR4A that also featured a permanently attached soft top that was much easier to operate. Although the new rear end tended to bottom easily, it improved handling and ride comfort, especially on rough surfaces. No wonder the independent suspension quickly went from optional to standard equipment.

Triumph built 40,253 TR4s before moving on for 1965 with the TR4A. This one
got a better soft top and a bump to 109 hp, but more importantly,
made available a coil-sprung independent rear suspension.
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