Honda CBR900RR

Honda CBR900RR

Manufacturer	Honda
Also called	Fireblade
Production	1992-2003
Successor	CBR1000RR
Class	Sport bike
Related	Honda CBR600RR Honda CBR1000RR Honda CB900F

The Honda CBR900RR, also known as the Fireblade, is a large displacement sport bike introduced in 1992 by Honda. It was the first of the Honda Fireblade models and was designed by Tadao Baba.

History

CBR900RR

The CBR900RR was introduced in 1992 and was fitted with an 893 cc (54.5 cu in) inline-four engine. When introduced, it set a precedent for light weight in the super bike class. At 453 lb (205 kg) with a full tank of gas, the CBR900RR was just 4 lb (2 kg) heavier than Honda's own CBR600F2, and 76 lb (34 kg) lighter than the next-lightest open-class machine at the time, the Yamaha FZR1000. Minor changes to the 1994 model included an improved shift drum to cure notchy shifting, and steadier mirrors.

In a move to refine the CBR900RR's handling traits on bumpy roads, the 1995 model's suspension was upgraded with revised spring and damping rates, and a compression adjuster was added to the front fork. More aggressive bodywork incorporated a "cut reflector" design headlight and fewer of the CBR's unique fairing holes. Slimmer and firmer footpegs were patterned after the RC45 and a shift linkage replaced the original model's backward pedal. A new instrument panel included an electronic speedometer that measured speed from the countershaft sprocket. The only engine change in 1995 was the replacement of the aluminum valve cover with a magnesium piece.

1997 CBR900RR

CBR919RR

1996 brought the first major changes to the CBR900RR. In order to achieve a more optimized balance of rigidity, Honda significantly altered the 1996 CBR's chassis and suspension. The frame and swingarm were fabricated from larger, thinner-walled extrusions for reduced torsional rigidity. The fork and shock internals were re-designed, and the swingarm pivot raised by 5 mm (0.2 in). Revised ergonomics brought the bars 10 mm (0.4 in) higher and swept back five degrees more than earlier models, along with a slimmer gas tank. Engine updates included a bump in displacement to 919 cc (56.1 cu in) via a 1 mm (0.039 in) bore increase, slightly higher compression, a curved radiator, larger exhaust, extra clutch plates, smaller alternator, and the addition of a throttle position sensor. The 1996 model carried over to 1997 unchanged except for the updates to color/graphics offerings.

1999 German type SC33 II

In 1998, Honda continued subtle refinements in the CBR919RR's chassis. It saw frame stiffness closer to the original model's, revised suspension internals, and 5 mm (0.2 in) 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.

CBR929RR

The CBR929RR had a completely new 929 cc (56.7 cu in) 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 330 mm (13 in) front discs; and the 16 in (410 mm) front wheel was replaced for a more common 17 in (430 mm) wheel.

CBR954RR

In 2002, a brand new engine was made which increased capacity to 954 cc (58.2 cu in) which resulted in the CBR954 name. Larger injectors and radiator, re-mapped electronic fuel injection, and a more powerful computer 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 riding position/pegs were raised to allow for greater lean angles. Dry weight reduced to 168 kg (370 lb).

The CBR954RR was replaced by an all new CBR1000RR in 2004.

Specifications

All specifications are manufacturer claimed unless specified.

Model	CBR900RR	CBR900RR	CBR919RR	CBR929RR	CBR954RR
Years	1993–1994	1995	1996–1999	2000–2001	2002–2003
Engine displacement	893 cc (54.5 cu in)	893 cc (54.5 cu in)	919 cc (56.1 cu in)	929 cc (56.7 cu in)	954 cc (58.2 cu in)
Engine type	inline-4
Stroke	4
Compression	11:1	11:1	11.1:1	11.3:1	11.5:1
Bore x stroke	70.0 × 58.0 mm (2.76 × 2.28 in)	70.0 × 58.0 mm (2.76 × 2.28 in)	71.0 × 58.0 mm (2.80 × 2.28 in)	74.0 × 54.0 mm (2.91 × 2.13 in)	75.0 × 54.0 mm (2.95 × 2.13 in)
Fuel control	4x Keihin CV carbs	4x Keihin CV carbs	4x 38 mm Keihin CV carbs	PGM-FI (Fuel Injection) w/ Automatic Choke	PGM-FI (Fuel Injection) w/ Automatic Enricher Circuit
Cooling system	liquid
Gearbox	6-speed
Final drive	chain	chain	#525 O-Ring Sealed Chain	#530 O-Ring Sealed Chain	#530 O-Ring Sealed Chain
Dry weight			396.8 lb (180.0 kg)	379 lb (172 kg)	370 lb (170 kg)
Seat height			810 mm (32 in)	32.3 in (820 mm)	32.1 in (820 mm)
Wheelbase			1,405 mm (55.3 in)	54.9 in (1,390 mm)	55.1 in (1,400 mm)
Front suspension travel			4.7 in (120 mm)	4.7 in (120 mm)	4.7 in (120 mm)
Rear suspension travel			4.9 in (120 mm)	5.3 in (130 mm)	5.3 in (130 mm)
Front tire	130/70-ZR16	130/70-ZR16	130/70-ZR16	120/70-ZR17	120/70-ZR17
Rear tire	180/55-ZR17	180/55-ZR17	180/55-ZR17	190/50-ZR17	190/50-ZR17
Front brakes			Dual disc, 310 mm (12 in)	Dual disc, 330 mm (13 in)	Dual disc, 330 mm (13 in)
Rear brakes			Single disc, 220 mm (8.7 in)	Single disc, 220 mm (8.7 in)	Single disc, 220 mm (8.7 in)
Fuel capacity			18 L (4.0 imp gal; 4.8 US gal) with 2 L (0.44 imp gal; 0.53 US gal) reserve	18 L (4.0 imp gal; 4.8 US gal) with 3.4 L (0.75 imp gal; 0.90 US gal) reserve	18 L (4.0 imp gal; 4.8 US gal) with 3.4 L (0.75 imp gal; 0.90 US gal) reserve
Performance
Max. Power Output (at the crankshaft)			128.0 hp (95 kW) @ 10,500 rpm	150.0 hp (112 kW) @ 11,500 rpm	154.0 hp (115 kW) @ 11,250 rpm