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Suzuki RG125 Gamma 1985—1991
Suzuki RG125F Gamma 1992—


I have started to collect some RG125 Gamma information on this page. I would be grateful of any contributions — sales brochures, magazine ads, magazine articles, pictures, specs, facts, corrections etc. Please scan the material in JPEG format (large enough that all the details are visible) and send them to me. Please tell me the source and the publication date if possible. If you send me pictures of your own bike, please follow these instructions.

Suzuki RG125 Gamma


The little and spicy member of the Gamma-family

In March 1983 Suzuki presented the RG250 Gamma to show who's the king of the road track and a couple of years later the RG125 Gamma was introduced to give a match to the Italian 125cc racers.

RG125 Gamma was introduced in Europe at IFMA '84, the International Bike Show in Cologne, West-Germany, in late 1984 (see the picture above). The bike at the show had only a 80cc engine and the 125cc version was to be introduced later. There's nearly no market at all for 125cc motorcycles in West-Germany but the 80cc bikes sold very well.

The RG125 Gamma borrowed a lot from its bigger brothers, RG250 and RG500 Gamma but the single cylinder RG125 was very narrow, making it almost impossible for the sides of the motorcycle to touch the tarmac when leaning the bike in corners. The maximum leaning angle is whole 55 degrees! The first model had only 105 kg (231 lbs) dry mass. Its steel frame was almost fragile but it worked well. The brakes were good at the time and had a great feeling.

Riding a RG125 Gamma is quite unpleasant experience for the taller riders. The small dimensions of the bike gives a great racing feeling but it certainly isn't a bike for touring.

The water-cooled two-stroke engine vibrates a lot and the rear mirrors are blurry at all speeds. It delivers a lot of power, though (25 hp, 19 Nm). For more powerful mid-range the engine has a system called AEC, that opens an extra exhaust chamber.

Only cosmetic changes were made to the RG125 Gamma between 1985 and 1991. The 1992 year's RG125 Gamma was totally redigned. The frame, the suspension and everything of the bike were better. The engine was upgraded to deliver 33 hp at 11.250 rpm. The new RG125 Gamma borrowed a lot from the RGV250. The engine can be described a s a RGV250 engine with a single cylinder instead of two. Even the 125cc engine got an electric starter and balance axel to reduce vibrations.

A naked version called RG125U Wolf was also introduced in 1992.

Note: The different measurements below may be caused by differencies between different countries. If you have anything to contribute, please don't hesitate to contact me.

Jarmo Haapamäki



Suzuki 1985More Suzuki models from 1985
1985 Suzuki year code: F
 
A model with a white fuel tank anf fairing was sold in some countries besides the blue-white models. There were some problems in getting started with the mass production of the RG125 Gamma, as it was for the RG500 Gamma. The first bikes arrived to Sweden in late 1985 and were sold as 1986 year's model.

The RG125 Gamma models up to 1991 were sold in Japan without the lower fairing (option) in Japan.
 
Suzuki RG125 GammaRG 125 Gamma 1985
Overall Length: 1 950 mm (76.8 in)
Overall Width: 660 mm (26.0 in)
Overall Height: 1 155 mm (45.5 in)
Wheelbase: 1 310 mm (51.6 in)
Dry Weight: 95 kg (209 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 25 hp/ 9.500 rpm, 1,95 kg-m/ 8.500 rpm.

Click on the image for larger format.
Suzuki RG125 GammaRG 125 Gamma 1985
Overall Length: 1 950 mm (76.8 in)
Overall Width: 660 mm (26.0 in)
Overall Height: 1 155 mm (45.5 in)
Wheelbase: 1 310 mm (51.6 in)
Dry Weight: 95 kg (209 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 25 hp/ 9.500 rpm, 1,95 kg-m/ 8.500 rpm.

Click on the image for larger format.


Suzuki 1986More Suzuki models from 1986

1986 Suzuki year code: G
 
Because of the late start in mass production of the RG125 Gamma, no new model for 1986 was presented in Japan. In many countries, as in Sweden, 1986 was the first model year for the RG125 Gamma.

There are small differencies in the specs between model sold on different markets. The wheelbase and tyhe mechanics are still the same.
 
Suzuki RG125 GammaRG 125 Gamma 1986
Overall Length: 1 960 mm (77.2 in)
Overall Width: 650 mm (25.6 in)
Overall Height: 1 155 mm (45.5 in)
Seat Height: 720 mm (28.3 in)
Wheelbase: 1 310 mm (51.6 in)
Dry Weight: 94 kg (207 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 25 hp (18,4 kW)/ 9.000 rpm, 19,1 Nm/ 8.500 rpm.

Click on the image for larger format.
Here's even larger picture.


Suzuki 1987More Suzuki models from 1987
1987 Suzuki year code: H
 
In Japan, 1988 was the first model year with ”Suzuki” written on the fuel tank instead of the model name. Colors available: Blue/White, Black, Red/White.
 
Suzuki RG125 Gamma RG-125RG 125 Gamma 1987
Overall Length: 1 950 mm (76.8 in)
Overall Width: 660 mm (26.0 in)
Overall Height: 1 155 mm (45.5 in)
Wheelbase: 1 310 mm (51.6 in)
Dry Weight: 95 kg (209 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 25 hp/ 9.500 rpm, 1,95 kg-m/ 8.500 rpm.

Click on the image for larger format.
Suzuki RG125 GammaRG 125 Gamma 1987
Overall Length: 2 030 mm (79.9 in)
Overall Width: 655 mm (25.8 in)
Overall Height: 1 155 mm (45.5 in)
Seat Height: 730 mm (28.7 in)
Wheelbase: 1 310 mm (51.6 in)
Dry Weight: 96 kg (211 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 25 hp (18,4 kW)/ 9.000 rpm, 19,1 Nm/ 8.500 rpm.

Click on the image for larger format.
Here's even larger picture.


Suzuki 1988More Suzuki models from 1988
1988 Suzuki year code: J

 
In Japan, 1988 was the first model year with ”Suzuki” written on the fuel tank instead of the model name. Colors available: Blue/White, Black, Red/White.

The RG125 Gamma was sold in Japan without the lower fairing (option).
 
Suzuki RG125 GammaRG 125 Gamma 1988
Overall Length: 1 950 mm (76.8 in)
Overall Width: 660 mm (26.0 in)
Overall Height: 1 155 mm (45.5 in)
Wheelbase: 1 310 mm (51.6 in)
Dry Weight: 95 kg (209 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 25 hp/ 9.500 rpm, 1,95 kg-m/ 8.500 rpm.

Click on the image for larger format.
Here's even larger picture.
Suzuki RG125 GammaRG 125 Gamma 1988
Overall Length: 2 030 mm (79.9 in)
Overall Width: 655 mm (25.8 in)
Overall Height: 1 155 mm (45.5 in)
Seat Height: 730 mm (28.7 in)
Wheelbase: 1 310 mm (51.6 in)
Dry Weight: 96 kg (211 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 25 hp (18,4 kW)/ 9.000 rpm, 19,1 Nm/ 8.500 rpm.

Click on the image for larger format.
Here's even larger picture.


Suzuki 1992More Suzuki models from 1992
1992 Suzuki year code: N
 
The 1992 year's RG125 Gamma FN was a whole new motorcycle, with crescent swing arm, inverted front fork, fairing, chassis, features and graphics that related to Suzuki's grand prix machines. The model was presented in November 4th 1991 in Japan.

Starting frame number: NF13A-100001
Colors: Blue/White/Red, Black/Purple/Blue

A naked (and cheaper) version with the old type suspension, RG125U Wolf, was available in some countries. Here's more RG125U Wolf info.
 
Suzuki RG125 Gamma RG-125RG 125 F Gamma 1992
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.

Click on the image for larger format.
Suzuki RG125 Gamma RG-125RG 125 F Gamma 1992
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.
Suzuki RG125 GammaRG125U Wolf 1992
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 035 mm (40.7 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 115 kg (253 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.

Click on the image for larger format.
Here's even larger picture.
Here's more RG125U Wolf info.



Suzuki 1993More Suzuki models from 1993
1993 Suzuki year code: P
 
RG125 Gamma FP

Starting frame number: NF13A-105220
Colors: Blue/White, Black/Blue
 
Suzuki RG125 GammaRG 125 F Gamma 1993
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.
Suzuki RG125 GammaRG 125 F Gamma 1993
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.
Suzuki RG125 GammaRG 125 F Gamma 1993
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.

Click on the image for larger format.


Suzuki 1994More Suzuki models from 1994
1994 Suzuki year code: R
 
The 1994 RG125 FR Gamma was presented in June 1994.

Starting frame number: NF13A-107905
Colors: Blue/White, Black
 

Suzuki RG125 GammaRG 125 F Gamma 1994
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.

Click on the image for larger format.
Here's even larger picture.

Suzuki RG125 GammaRG 125 F Gamma 1994
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.

Click on the image for larger format.
Suzuki RG125 GammaRG 125 F Gamma 1994
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.


Suzuki 1995More Suzuki models from 1995
1995 Suzuki year code: S
Suzuki RG125 GammaRG 125 F Gamma 1995
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. Sweden: 15 hk (11kW)/ 8.200 rpm, 13,1 Nm/ 8.100 rpm. Unrestricted: 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.

Click on the image for larger format.
Suzuki RG125 GammaRG 125 F Gamma 1995
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.

Click on the image for larger format.


Suzuki 1996More Suzuki models from 1996
1996 Suzuki year code: T
 
The 1996 year's RG125 FT Gamma was presented in October 1995.

Starting frame number: NF13A-108620
Colors: Red/White, Black/Green
 

Suzuki RG125 GammaRG 125 F Gamma 1996
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.

Suzuki RG125 GammaRG 125 F Gamma 1996
Overall Length: 2 015 mm (79.3 in)
Overall Width: 770 mm (30.3 in)
Overall Height: 1 090 mm (42.9 in)
Seat Height: 775 mm (30.5 in)
Wheelbase: 1 335 mm (52.6 in)
Ground clearance: 140 mm (5.5 in)
Dry weight: 125 kg (275 lbs)
Engine type: Water-cooled 124 cc single cylinder two-stroke. 33 hp/ 11.250 rpm, 21 Nm/ 11.000 rpm.

1992—1996 RG125 Gamma specifications (Japan)
Overall length: 2 005 mm (78.9 in.)
Overall width: 770 mm (30.3 in)
Overall height: 1 090 mm (42.9 in)
Wheelbase: 1 355 mm (53.3 in.)
Seat height: 760 mm (29.9 in.)
Ground clearance: 140 mm (5.5 in)
Dry weight: 123 kg (271 lbs)
Engine type: Liquid-cooled single cylinder 2-stroke
Intake system: Crankcase reed valve
Piston displacement: 124 cc
Bore x stroke: 56,0 x 50,6 mm (2.205 x 1.992 in.)
Compression ratio: 7,4 :1
Maximum power output: 22 hp (16,5 kW)/ 10.000 rpm
Maximum torque: 17,4 Nm (1,7 kg-m)/ 9.000 rpm
Carburettor:  
Starter system: Electric starter
Ignition type: CDI
Lubrication system: Suzuki CCI
Clutch: Wet multi-plate type
Transmission: 6-speed constant mesh
Gearshift pattern: 1-down, 5-up
  1st gear ratio: 2.636
  2nd gear ratio: 1.857
  3rd gear ratio: 1.333
  4th gear ratio: 1.095
  5th gear ratio: 0.916
  6th gear ratio: 0.833
Final drive: Chain, O-ring sealed
Caster: 25° 30'
Trail: 97 mm
Front brake: Single hydraulic disk
Rear brake: Single hydraulic disk
Front tyre: 110/80-17 52S
Rear tyre: 120/80-17 61S
Fuel tank Capacity incl. reserve: 14 liter



More: RG125 Gamma brochures & adverts

More: RG125 Gamma magazine articles

More: Suzuki RG models


More: All Suzuki models


Sources: Swedish Bike magazine, Tekniikan Maailma, Roy Bacon's Suzuki etc.

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