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TRIUMPH T120TT Bonneville (1964-67) E/COAST SPECIAL (USA)
TRIUMPH T120TT Bonneville (1964-67) E/COAST SPECIAL (USA)
1963-1967 Triumph T120 TT Specials
Engine: 650cc OHV parallel twin, 71mm x 82mm bore and stroke. Compression ratio 12:1 (1963)/11:2 (1964/some say 11:1)/11:1 (1965-1967), 52hp @ 6,500rpm
Top speed: 120mph (period test)
Carbs: Twin 389/95 1-3/16in Amal Monobloc (1963-early 1967)/Twin Amal Concentric (late 1967)
Transmission: 4-speed, chain final drive
Electrics: Lucas ET Energy Transfer
Frame/wheelbase: Single downtube steel cradle/55in (1,397mm)
Suspension: Telescopic forks front at 65-degree angle (later 62-degree); dual Girling shocks w/adjustable preload
Brakes: 8in (203mm) SLS full width drum front, 7in (178mm) SLS drum rear
Wheels: 3.5 x 19in front, 4 x 18in rear
Weight (dry/approx.): 350lb (159kg)
Seat height: 32.5in (826mm)
Fuel capacity (approx.): 3gal (1963-1965)/ 2-1/2gal (1966-1967)
Introduced in 1963 and running until 1967, the Triumph TT Special was built solely for the American market, where just about every manufacturer was selling seriously competitive sports motorcycles. The TT Special had definite appeal to riders interested in going fast in offroad events such as TT racing. In that style of competition, the rules of AMA flat track racing dictated at least one right hand turn and a jump, with a dirt course that could be any length.
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1963-1967 Triumph T120 TT Specials
Engine: 650cc OHV parallel twin, 71mm x 82mm bore and stroke. Compression ratio 12:1 (1963)/11:2 (1964/some say 11:1)/11:1 (1965-1967), 52hp @ 6,500rpm
Top speed: 120mph (period test)
Carbs: Twin 389/95 1-3/16in Amal Monobloc (1963-early 1967)/Twin Amal Concentric (late 1967)
Transmission: 4-speed, chain final drive
Electrics: Lucas ET Energy Transfer
Frame/wheelbase: Single downtube steel cradle/55in (1,397mm)
Suspension: Telescopic forks front at 65-degree angle (later 62-degree); dual Girling shocks w/adjustable preload
Brakes: 8in (203mm) SLS full width drum front, 7in (178mm) SLS drum rear
Wheels: 3.5 x 19in front, 4 x 18in rear
Weight (dry/approx.): 350lb (159kg)
Seat height: 32.5in (826mm)
Fuel capacity (approx.): 3gal (1963-1965)/ 2-1/2gal (1966-1967)
Introduced in 1963 and running until 1967, the Triumph TT Special was built solely for the American market, where just about every manufacturer was selling seriously competitive sports motorcycles. The TT Special had definite appeal to riders interested in going fast in offroad events such as TT racing. In that style of competition, the rules of AMA flat track racing dictated at least one right hand turn and a jump, with a dirt course that could be any length.
