Gilera RTX 125

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Gilera RTX 125
Production 1986
Class Enduro
liquid-cooled, two-stroke, single cylinder, reed valve
Bore / Stroke 55.9mm x 55.9mm
Compression ratio 13.4:1
Horsepower 24.0 HP (17.9 KW) @ 9250RPM
Torque 10.33 ft/lbs (14.0 Nm) @ 10500RPM
Transmission Gear box: 6-speed, manual
Final Drive: chain
Suspension Front: telescopic fork
Rear: monoshock
Brakes Front: single 220mm disc
Rear: 140mm drum
Front Tire 2.75-21
Rear Tire 4.10-18
Weight 138.0 kg (wet)
Manuals Service Manual

The Gilera RTX 125 was a liquid-cooled, two-stroke, single cylinder, reed valve Enduro motorcycle produced by Gilera in 1986. Max torque was 10.33 ft/lbs (14.0 Nm) @ 10500 RPM. Claimed horsepower was 24.0 HP (17.9 KW) @ 9250 RPM.


A 55.9mm bore x 55.9mm stroke result in a displacement of just 124.0 cubic centimeters.


The bike has a 6-speed, manual transmission.


It came with a 2.75-21 front tire and a 4.10-18 rear tire. Stopping was achieved via single 220mm disc in the front and a 140mm drum in the rear. The front suspension was a telescopic fork while the rear was equipped with a monoshock.

1986 Gilera RTX 125[edit]

1986 Gilera RTX 125 1986 Gilera RTX 125 1986 Gilera RTX 125

The 1986 MY Gilera RTX 125 has, at its heart, a two-stroke, liquid-cooled, single cylinder powerplant that was paired to a six-speed manual transmission with a chain final drive, and can reach a maximum power output of 24 horsepower and 14 Nm of torque.

It also comes with features such as a square headlight with protection grille, a dual seat with passenger grab rails, a small luggage rack in the rear, an under-seat exhaust system, laced wheels, an engine mudguard, a small windscreen, a telescopic front fork coupled to a rear monoshock, plus a front disc brake and a drum brake in the rear.