Contents
History [ edit ]
CBR900RR [ edit ]
The first generation RR, the CBR900RR, was introduced in 1992 with an 893cc (54.5cuin) inline-four engine set a precedent for light weight in the super bike class. The CBR900RR was based on an advanced research stage model known within Honda as the CBR750RR. With the objective of equaling the acceleration of competitors’ flagship sport bikes, Honda increased the stroke of its inline 4-cylinder 750cc engine and raised displacement to 893cc.
Complementing this excellent power performance were the bike’s dry weight of 185 kg, wheelbase of 1,405 mm and body almost identical to that of the advanced research stage model. At 453lb (205kg) with a full fuel tank, the CBR900RR was just 4lb (2kg) heavier than Honda’s own CBR600F2. and 76lb (34kg) lighter than the next-lightest open-class machine at the time, the Yamaha FZR1000 .
CBR900RR (918) [ edit ]
1999 German type SC33 II
In 1998, Honda continued subtle refinements in the fourth generation CBR900RR’s chassis. It saw frame stiffness closer to the original model’s, revised suspension internals, and 5mm (0.2in) less triple clamp offset (an almost universal aftermarket upgrade to previous models). New brake calipers acted on larger front discs, the fairing was re-shaped and raised footpegs subtly changed ergonomics again.
Eighty percent of the engine’s internals were all-new to reduce weight and minimize friction; other updates included redesigned combustion chambers and porting, aluminum composite cylinders, new pistons, a smaller and lighter clutch pack, revised gearbox ratios, larger radiator, and a new stainless steel exhaust header.
CBR900RR (929) [ edit ]
The fifth generation of RR, known as the CBR929RR in North America, was introduced in 2000 and had a completely new 929cc (56.7cuin) engine incorporating fuel injection, more oversquare cylinder dimensions, larger valves set at a narrower included angle, lighter internals, and an all-titanium, HTEV-equipped exhaust system. The pivotless chassis had the swingarm mounted to the engine cases but incorporated a brace underneath the engine. Updated suspension and brakes included an inverted front fork and 330mm (13in) front discs; and the 16 inch front wheel was replaced with a more common 17 inch wheel.
CBR900RR (954) [ edit ]
The sixth generation of the RR was introduced in 2002 (known as the CBR954RR in North America and Japan), cylinder bore was increased from 74mm to 75mm, increasing capacity to 954cc (58.2cuin). Larger fuel injectors and radiator, re-mapped electronic fuel injection, and a more powerful ECU were also added. The bodywork and fairings were reworked for a sleeker, more aerodynamic feel.
The frame was strengthened and a more rigid swingarm added and the footpegs were raised to allow for greater lean angles. Dry weight was reduced to 168kg (370lb).
The CBR900RR was replaced by an all new CBR1000RR in 2004.
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