Suzuki SX125R
1985—1992

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In 1982, Suzuki released two dual-purpose machines, the DR125S and the DR250S, both with lightweight diamond frame, full-floater rear suspension and four-stroke air-cooled single-cylinder SOHC engines. In Japan, these models were replaced by the SX125R and SX200R models in 1985. The export version of the Suzuki SX125R was called DR125. Suzuki SX125R was a dual-sport machine with a compact, slim, and lightweight body with a dry weight of 100 kg (220 lbs). It was a modest off-road bike that emphasized ease of handling. Thanks to its large-capacity fuel tank, excellent fuel economy and comfortable riding position it was popular among touring riders. Its engine was a newly designed 125cc 4-stroke single-cylinder SOHC, evolved from the '82 DR125/GN125 engine. Combined with a flat slide carburetor, the motor produced a maximum output of 14 PS. The chassis features front forks with a 205 mm stroke. The rear wheel was fitted with an Full Floater suspension and an aluminum swing arm. The low-profile tires were 21 inches in the front and 18 inches in the rear. The model was dropped by Suzuki after the 1991 'M' model that was sold 1991–1992. In 1993, the Djebel 125 (called DR125SE in Europe) with enhanced touring capabilities and an electric starter, replaced the SX model. Furthermore, a heavy-duty version called the DF125E was released in 1997. The DF125E had a large rear carrier, a front carrier with an integrated headlight guard, extended front and rear mudguards, and a camouflage color scheme. This 1997 DF125E was almost identical in specifications to the DR125SE model later released for overseas markets. The DF125 was dropped from the Japanese catalog in 2000 and the Djebel 125 a year later. However, development continued for overseas markets. The air-cooled 124cc single-cylinder engine and basic chassis configuration of the SX125R remained virtually unchanged since 1985, continuing to be produced and sold around the world. Its 40-year-old, mature design is exceptionally reliable, and it has survived to the present day as a dual-purpose bike that's ”hard to break and easy to repair.”

1985 Suzuki SX125R, Smoke Black (21C) and SX200R, Rocky White (10V)

1985 Suzuki year code: F

Model name: SX125R Time of release: April 1985 Frame numbers: SF41B-100001~ Retail price in Japan: 253,000 yen Colors: Smoke Black (21C)

1985 Suzuki SX125R, Smoke Black (21C)

1985 Suzuki SX 125 R Overall Length: 2 170 mm (85.4 in) Overall Width: 825 mm (32.5 in) Overall Height: 1 180 mm (46.5 in) Seat Height: 800 mm (31.5 in) Wheelbase: 1 390 mm (54.7 in) Ground Clearance: 265 mm (10.4 in) Dry Weight: 100 kg (220 lbs) Engine: Air-cooled 124 ccSOHC 1 cylinder, 2 valves. 13.8 hp (10.15 kW) @ 9  500 rpm, 10.8 Nm (1.1 kg-m) @ 8  000 rpm Here's even larger picture.

1987 Suzuki year code: H

Model name: SX125R-2 Time of release: February 1987 Frame numbers: SF41B-101057~ Retail price in Japan: 253,000 yen Colors: Violent Blue (34S) The SX125R engine was now black.

1987 Suzuki SX 125 R Overall Length: 2 170 mm (85.4 in) Overall Width: 825 mm (32.5 in) Overall Height: 1 180 mm (46.5 in) Seat Height: 800 mm (31.5 in) Wheelbase: 1 390 mm (54.7 in) Ground Clearance: 265 mm (10.4 in) Dry Weight: 100 kg (220 lbs) Engine: Air-cooled 124 ccSOHC 1 cylinder, 2 valves. 13.8 hp (10.15 kW) @ 9  500 rpm, 10.8 Nm (1.1 kg-m) @ 8  000 rpm Here's even larger picture.

1988 Suzuki year code: J

Model name: SX125RJ Time of release: February 1988 Frame numbers: SF41B-101669~ Retail price in Japan: 253,000 yen Colors: Smoke Black (21C)

1988 Suzuki SX 125 R Overall Length: 2 170 mm (85.4 in) Overall Width: 825 mm (32.5 in) Overall Height: 1 180 mm (46.5 in) Seat Height: 800 mm (31.5 in) Wheelbase: 1 390 mm (54.7 in) Ground Clearance: 265 mm (10.4 in) Dry Weight: 100 kg (220 lbs) Engine: Air-cooled 124 ccSOHC 1 cylinder, 2 valves. 13.8 hp (10.15 kW) @ 9  500 rpm, 10.8 Nm (1.1 kg-m) @ 8  000 rpm Click on the image for larger format.

1988 Suzuki SX 125 R Overall Length: 2 170 mm (85.4 in) Overall Width: 825 mm (32.5 in) Overall Height: 1 180 mm (46.5 in) Seat Height: 800 mm (31.5 in) Wheelbase: 1 390 mm (54.7 in) Ground Clearance: 265 mm (10.4 in) Dry Weight: 100 kg (220 lbs) Engine: Air-cooled 124 ccSOHC 1 cylinder, 2 valves. 13.8 hp (10.15 kW) @ 9  500 rpm, 10.8 Nm (1.1 kg-m) @ 8  000 rpm Here's even larger picture.

1991 Suzuki year code: M

Model name: SX125RM Time of release: November 1990 Frame numbers: SF41B-103250~ Retail price in Japan: 259,000 yen Colors: Super White (14L)

1991 Suzuki SX 125 R Overall Length: 2 170 mm (85.4 in) Overall Width: 825 mm (32.5 in) Overall Height: 1 180 mm (46.5 in) Seat Height: 800 mm (31.5 in) Wheelbase: 1 390 mm (54.7 in) Ground Clearance: 265 mm (10.4 in) Dry Weight: 100 kg (220 lbs) Engine: Air-cooled 124 ccSOHC 1 cylinder, 2 valves. 13.8 hp (10.15 kW) @ 9  500 rpm, 10.8 Nm (1.1 kg-m) @ 8  000 rpm Click on the image for larger format.

1991 Suzuki SX 125 R Overall Length: 2 170 mm (85.4 in) Overall Width: 825 mm (32.5 in) Overall Height: 1 180 mm (46.5 in) Seat Height: 800 mm (31.5 in) Wheelbase: 1 390 mm (54.7 in) Ground Clearance: 265 mm (10.4 in) Dry Weight: 100 kg (220 lbs) Engine: Air-cooled 124 ccSOHC 1 cylinder, 2 valves. 13.8 hp (10.15 kW) @ 9 500 rpm, 10.8 Nm (1.1 kg-m) @ 8  000 rpm Click on the image for larger format.

1985–1991 Suzuki SX125R (SF41B) specifications (Japan)
Engine Type:	F413, Air-cooled single cylinder 4-stroke
Cylinder Volume:	124 cc
Valve system:	SOHC, 2 valves per cylinder
Lubricating method:	Wet sump, capacity 1.1 liter (1.16 quarts)
Bore x Stroke:	57.0 x 48.8 mm (2.244 x 1.921 in.)
Compression Ratio:	9.5:1
Power output:	13.8 hp (10.15 kW) @ 9 500 rpm
Torque:	10.8 Nm (1.1 kg-m) @ 8  000 rpm
Carburetor type:	BST31
Starting System:	Kick starter
Ignition system:	CDI
Overall Length:	2 170 mm (85.4 in.)
Overall Width:	825 mm (32.5 in.)
Overall Height:	1 180 mm (46.5 in.)
Wheelbase:	1 390 mm (54.7 in.)
Seat Height:	800 mm (31.5 in)
Ground Clearance:	265 mm (10.4 in.)
Dry Weight:	100 kg (220 lb.)
Fuel tank capacity:	15 liter (4.0 US gallons, 3.3 UK gallons)
Fuel Consumption:	63.0 km/liter (at 50 km/h)
Clutch:	Wet multiple plate, coil springs
Transmission:	Constant mesh, 5-speed return
Gear ratios:	3.000 / 1.857 / 1.368 / 1.095 / 0.800
Reduction ratios:	Primary 3.470, Secondary 3.312
Frame type:	Tubular steel, diamond type
Caster:	29° 20'
Trail:	117 mm (4.606 in.)
Front Brake:	Single hydraulic disc
Rear Brake:	Drum brake, leading/trailing
Front Tire:	80/80-21 45P
Rear Tire:	110/80-18 53P
Steering angle:	43° (left to right)
Turning Radius:	2.3 meter (7.55 ft.)

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