R107 received its first update in 1985 with deeper front air dam, revised brake system with larger discs and four piston calipers, driver's side airbag (standard for US market and extra-cost option for the European market), and, for the European market, catalysator option. The 5-mph bumpers and four round sealed-beam headlamps fitted to the US models remained unchanged despite the revised US FMVSS regulations that allowed the 2.5-mph bumpers and form-fitting headlamps, starting with 1982 and 1983 model years respectively. The US model received the third brake lamp mounted on the trunk in 1986. The 560 SL was sold in the United States, Canada, Japan, and Australia only. Model Range 280 SL: 1974–1985, 2.8 L I6 300 SL: 1986–1989, 3.0 L I6 350 SL: 1971–1980, 3.5 L V8 350 SL (4.5): 1972, 4.5 L V8 (exclusive for the US market) 380 SL: 1981–1985, 3.8 L V8 420 SL: 1986–1989, 4.2 L V8 450 SL: 1973–1980, 4.5 L V8 500 SL: 1981–1989, 5.0 L V8 560 SL: 1986–1989, 5.5 L V8 R129 (1989–2001) The R129, introduced in 1989, soley as a two-passenger convertible with a removable hardtop. The R129 was the first Mercedes to feature a fully automatic, hydraulically-operated fabric convertible top; V8 and (later) V12 engines with four valves per cylinder; projector lens HID headlamps (introduced in 1995); and an automatic rollbar, which self-deployed in a rollover event. The retractable rollbar could also be raised or lowered manually using a switch on the console, and facilitated occupant safety without compromising aesthetics. In 1992, R129 was the first SL-Class to offer an optional a V12 engine (600 SL/SL 600) and to have official AMG variants (500 SL 6.0 AMG, SL 60 AMG (V8), SL 70 AMG (V12), SL 73 AMG (V12), and then SL 55 AMG (V8)). The R129 was the last SL-Class offered with a manual gearbox. For the US market, R129 was the first SL-Class offered with six-cylinder inline engine from 300 SL-24 (named as 300SL) since the 1971. For 1995, a larger 3.2-litre engine was introduced in the SL 320, subsequently dropped from the US market in 1998. The 1994 R129 introduced a minor cosmetic and technical updates; revised engine optionas; as well as a new nomenclature. The 3.0-litre six inline engines, initially fitted with 12-valve (300 SL) and 24-valve (300 SL-24) heads, was revised to one engine in two displacements (2.8 and 3.2 litres) with both utilizing