Vespa debuted its updated GTS 125 and 150 scooters during this year’s Intermot Show in Germany. The two models are powered by the new Euro4 compliant i-get engine, developed by Vespa’s parent company Piaggio and first debuted earlier this year on the revised Vespa Primavera and Sprint.
The i-get 125cc and 150cc mills on the GTS models are a bit more refined compared to the previously released versions. These new engines are liquid-cooled with four valves, whereas the i-get engines on the Primavera and Sprint were air-cooled and three-valve. Vespa estimates the 125 GTS provides 12 horsepower at 8250 rpm and 8.1 lb-ft torque at 6500 rpm. The 150 GTS puts out 14.7 horsepower at 8250 rpm and 10.3 lb-ft at 6500 rpm. The i-get engines are scheduled to have fluids and filters changed every 6200 miles and valve clearances adjusted every 12,400 miles.
Other new parts represented in the GTS versions of the i-get engine were intended to reduce friction and weight and minimize mechanical noise. This means there’s new heads, cylinders, pistons and crankshafts in the 125 and 150cc. The radiator is built into the engine, there’s a new airbox and a new gearbox cover. Piaggio also developed a new engine control unit that includes its Start & Stop system – Regulator Inverter Start & Stop System (RISS) to be precise.
The RISS removes the need for a traditional starter motor. There’s now a brushless electrical unit installed, directly to the crankshaft. The system automatically shuts the engine off after the vehicle has been stopped between three to seven seconds, with time before shutoff dependent on engine operating temperature. Twist the throttle, and the engine restarts. When the side stand is down or tilt sensor is activated the RISS is bypassed and automatic restart is disabled.
The electronic goodies don’t stop with engine control. The entire GTS range will come with a remote control option to open the saddle and a Bike Finder element which flashes the turn indicators of your machine. The 125 and 150 GTS are also compatible with the Vespa Multimedia Platform, which connects the vehicle to a smartphone and provides a wealth of additional ride data. Both options also come with two-channel ABS.
Each of the new GTS scooters have new plastics on the turn signals, and updated rear light assemblies. There’s new coverings on the saddles of both the 125 and 150 and helmet storage along with compartments behind the leg shields.
The remaining nuts and bolts of both scoots include single arm front suspension with coil springs and hydraulic absorbers along with double hydraulic shocks out back. The rear suspension also has four-setting adjustable preload. Both feature a 220mm disc front and rear to handle stopping duties and roll on 120/70 12-inch tires at the front and 130/70 12-inch tires at the back.