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Suzuki RB50 GAG (GSX-R50)

I have put some Suzuki RB50 GAG info on this page. Please send me more stuff to put here. I want tips, photos, magazine articles, brochures and adverts from all over the world!

Suzuki RB50 GAG extras

Suzuki 1986More Suzuki models from 1986
Suzuki model year code: G

RB50 GAG is an interesting small bike. It's one of those mini bikes the Japanese motorcycle manufacturers introduced for about three decades ago. But unlike RV50 Van Van or the PV50, RB50 wasn't a naked bike. No, it took the design from the racing track and its own GSX-R or RG/RGV Gamma models.

The RB50 GAG (A-LA41A) was introduced in 1986 and there were four different graphics available: bomber styled white, rabbit ”Little Racing” pink, GSX-R replica blue/white (also called GSX-R50, the minigixxer) and red/white (see pictures below). All four shared the same machinery.

The frame of the RB50 GAG was advanced. Like a ”real” racer, the mini-replica had also a welded aluminum box frame, hydraulic disc brake (at the front) and Full-Floater aluminum box-type swingarm.

The four-stroke engine came from the Birdie scooterette, and its power output didn't match the looks of the bike. It looked like it would be very fast but it wasn't. The air-cooled engine delivered 5,2 hp at 7.000 rpm and the dry mass of the bike was 64 kg (141 lbs). According to the service book, the European version was 1 kg (2.2 lbs) lighter. The variation can be caused by a different way of rounding the figure up or down, I don't know the reason. Anyway, according to Andrew, the webmaster of the Babygixxer homepage the model was sold under the name GSX-R50 in the United Kingdom.

Though the competition could beat it in most performance aspects, the RB50 is easy to ride and maintain. At the time, there were trim kits available for the engine but the Suzuki Motor Company discontinued the bike after only a couple of years of production and the go-fast parts produced in the 1980's are long gone. Current owners have to get by with custom-made parts or adapting parts from other bikes. It is not uncommon to see owners swapping-in parts from the competitors, NSRs and YSRs.

Suzuki had launched a model called RB even in the late 1950's but had not been used in decades. I wonder if the American radar/weather/photographic reconnaissance aircraft, Boeing RB50, had inspired the Suzuki engineers to give the bike its model name. Anyway, the bomber styled graphics of the bike must have had something to do with the fact that the RB50 reconnaissance planes were modified Boeing B50 bomber planes.

Some sources claim that the production of the RB50 ended after 1987. Still, the model was sold in Finland from 1987 to 1989 under the model Solifer-Suzuki R (the spare parts catalogs knew model name Solifer-Suzuki RB50). The specs of the Finnish version of GAG are not the same. The Soilfer-Suzuki had a lighter 2-stroke engine and the bike was stripped from some details to make it weigh less. Nevertheless the design of the bike was the same (the GSX-R replica version). Here's more info about the model.

Jarmo Haapamäki, August 2002

Suzuki RB50 RB-50 GSX-R50 GAG50 GAG-50RB 50 GAG 1986
Overall Length: 1 540 mm (60.6 in)
Overall Width: 610 mm (24.0 in)
Overall Height: 870 mm (34.3 in)
Wheelbase: 1 080 mm (42.5 in)
Dry Weight: 64 kg (141 lbs)
Engine type: Air-cooled 49 cc 1-cylinder, 4-stroke. 5,2 hp/ 7.000 rpm, 0,57 kg-m/ 6.000 rpm.

Click on the image for larger format.

Suzuki RB50 RB-50 GSX-R50 GAG50 GAG-50RB 50 GAG 1986
Overall Length: 1 540 mm (60.6 in)
Overall Width: 610 mm (24.0 in)
Overall Height: 870 mm (34.3 in)
Wheelbase: 1 080 mm (42.5 in)
Dry Weight: 64 kg (141 lbs)
Engine type: Air-cooled 49 cc 1-cylinder, 4-stroke. 5,2 hp/ 7.000 rpm, 0,57 kg-m/ 6.000 rpm.

Click on the image for larger format.

Suzuki RB50 RB-50 GSX-R50 GAG50 GAG-50RB 50 GAG 1986
Overall Length: 1 540 mm (60.6 in)
Overall Width: 610 mm (24.0 in)
Overall Height: 870 mm (34.3 in)
Wheelbase: 1 080 mm (42.5 in)
Dry Weight: 64 kg (141 lbs)
Engine type: Air-cooled 49 cc 1-cylinder, 4-stroke. 5,2 hp/ 7.000 rpm, 0,57 kg-m/ 6.000 rpm.

Click on the image for larger format.

Suzuki RB50 RB-50 GSX-R50 GAG50 GAG-50RB 50 GAG 1986
Overall Length: 1 540 mm (60.6 in)
Overall Width: 610 mm (24.0 in)
Overall Height: 870 mm (34.3 in)
Wheelbase: 1 080 mm (42.5 in)
Dry Weight: 64 kg (141 lbs)
Engine type: Air-cooled 49 cc 1-cylinder, 4-stroke. 5,2 hp/ 7.000 rpm, 0,57 kg-m/ 6.000 rpm.

Click on the image for larger format.




1986-1987 RB50 GAG (A-LA41A) specifications (Japan)
Engine Type: Air-cooled single cylinder SOHC 4-stroke
Cylinder Volume: 49 cc
Bore x Stroke: 39,0 x 41,8 mm (1.535 x 1.646 in.)
Compression Ratio: 10,3 :1
Power output: 5,2 hp/ 7.000 rpm
Torque: 0.57 kg-m/ 6.000 rpm
Engine oil capacity: 800 ml (0.85/0.70 US/Imp qt)
Overall Length: 1 540 mm (60.6 in.)
Overall Width: 610 mm (24.0 in.)
Overall Height: 870 mm (34.3 in.)
Wheelbase: 1 080 mm (42.5 in.)
Seat Height: 610 mm (24.0 in.)
Ground Clearance: 115 mm (4.5 in.)
Dry Weight: 64 kg (141 lbs)
Fuel tank capacity: 7,0 liter incl. reserve
Reserve: 0,8 liter
Carburetor: Mikuni VM13
Air cleaner: Polyurethane foam element
Lubrication system: Wet sump
Starting System: Kick start
Generator type: A.C. generator
Headlight: 6V 25W/25W
Tail/Brake light: 6V 3W/10W
Ignition type: Suzuki PEI (Pointless Electric Ignition)
Ignition timing: 27deg. +/- 2deg. B.T.D.C. at 6,000 rpm
Spark plug: NGK C6HA or Nippon Denso U20FS-L
Clutch type: Wet, multi-plate
Transmission type: 4-speed constant mesh
Gearshift pattern: 1-down, 3-up
Drive chain: Takasago RK420 or Daido D.I.D.420, 100 links
Primary reduction: 3.842 (73/19)
Final reduction: 2.642 (37/14)
Gear ratios: 3.400/1.933/1.315/1.095
Front suspension: Telescopic, coil spring, oil-damped
Rear suspension: Full-Floater aluminum box-type swingarm, oil-damped
Front fork oil capacity: 94ml (3.18/3.31 US/Imp oz)
Caster: 26°
Trail: 80 mm (3.15 in.)
Front tire size: 3.50-10 2PR
Rear tire size: 3.50-10 2PR
Front brake: Single disc, hydraulically operated
Rear brake: Internal expanding
Fuel consumption: 121,0 km/liter (30 kph)
Braking distance : 3,0 m (Initial speed 20 kph)
Turning radius: 2,5 meter (8.0 ft.)
Steering angle from left to right: 30°
Seating capacity: 1 person
Retail price 1986 in Japan: 183.000 Yen


Different GSX-R50/RB50 (European) service manual specifications GAG:

1986-1987 RB50 specifications (Europe)
Dry Mass: 63 kg (139 lbs)
Carburetor: Mikuni VM13SH, single
Fuel tank including reserve: 7.0 liter (1.8/1.5 US/Imp gal)
Fuel tank reserve 1.6 liter (1.7/1.4 US/Imp qt)


Suzuki 1987More Suzuki models from 1987
Suzuki model year code: H

As far as I know, the RB50 GAG was dropped from the Suzuki program after 1987.
No changes were made for the second model year.




Here's a couple of '87 RB50 pictures on the Visitors' Suzuki page, sent by Philip Murphy, USA.




More: RB50 GAG brochures & adverts

More: Suzuki RB50 GAG

More: Solifer-Suzuki R (RB50)

More: Pictures of Pertti's Solifer-Suzuki R (RB50)


More: Pictures of Andreas' Solifer-Suzuki R (RB50)


More: All Suzuki models

Sources: Fatbros Planning, My Babygixxer Homepage etc.


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