# Gilera Nexus

Gilera Nexus is a maxi-scooter manufactured by Italian company Piaggio under the Gilera brand. Sold from 2003. It is available in four engines (the 125, 250, 300 and 500 cm$^3$).
All engines are single cylinder four-stroke water cooled.

## History

Designed by Frascoli Design the Nexus 500 i.e. was first presented and marketed in 2003.
In 2006 Gilera added two other engines, the 250 and the 125 cm$^3$.
In 2008 the 250 cm$^3$ model went out of production, replaced by the 300 cm$^3$.
Version 300 and version 500 remain on sale since 2012 until 2014.

## Aprilia SR Max

Since June 2011, the Nexus has been marketed in Europe and Asia also by Aprilia under the name Aprilia SR Max proposed with Piaggio Quasar 125 and 300 engines only.
It achieved some success only in the 300 variant. Production in Italy for the European market ended definitively in 2016.
Since 2017 it has been re-proposed in China produced locally by the Zongshen Piaggio Foshan Motorcycle joint venture in the Euro 4 approved 300 variant and sold only on the local market. This model will also be imported into Europe from 2019 by the Austrian group KSR renamed Malaguti Madison 300 (KSR holds the rights to the Malaguti brand).
From 2022 the SR Max on the Chinese market is also offered with the 250 HPE engine.

## Engines and specifications

| | 125 i.e. | 250 i.e. | 300 i.e. | 500 i.e. |
| Engine |||||
| Engine Type | 124 cc (7.6 cu in) single cylinder four-stroke | 244.29 cc (14.907 cu in) single cylinder four-stroke | 278 cc (17.0 cu in) single cylinder four-stroke | 460 cc (28 cu in) single cylinder four-stroke |
| Bore/Stroke | 57.0 mm × 48.6 mm (2.24 in × 1.91 in) | 72.0 mm × 60.0 mm (2.83 in × 2.36 in) | 75.0 mm × 63.0 mm (2.95 in × 2.48 in) | 92.0 mm × 69.0 mm (3.62 in × 2.72 in) |
| Compression Ratio | 11.5-13:1 | 11:1 (±0.5) | 11:1 (±0.5) | 10.5:1 |
| Emission Regulations | EURO 3 | EURO 3 | EURO 3 | EURO 3 |
| Drivetrain |||||
| Transmission | CVT | CVT | CVT | CVT |
| Front Suspension | Hydraulic telescopic fork with Ø 35 stem | Hydraulic telescopic fork with Ø 35 stem | Hydraulic telescopic fork with Ø 35 stem | Hydraulic telescopic fork Ø 41 mm stem |
| Rear Suspension | Two double-acting shock absorbers, adjustable to four positions at preloading | Two double-acting shock absorbers, adjustable to four positions at preloading | Two double-acting shock absorbers, adjustable to four positions at preloading | Shock absorber (with double- acting helicoidal spring and adjustment of the spring preload in 7 positions) |
| Front Brakes | Ø 260 mm disc brake with hydraulic control activated by handlebar right-side lever | Ø 260 mm disc brake with hydraulic control activated by handlebar right-side lever | Ø 260 mm disc brake with hydraulic control activated by handlebar right-side lever | Double discs Ø 260 mm with floating caliper and twin Ø 28 mm plungers (Brembo) at front right and twin Ø 26 mm plungers (Brembo) at front left |
| Rear Brakes | Ø 240 mm disc brake with hydraulic control activated by the handlebar left side lever | Ø 240 mm disc brake with hydraulic control activated by the handlebar left side lever | Ø 240 mm disc brake with hydraulic control activated by the handlebar left side lever | Single disc Ø 240 mm with fixed caliper and two opposed Ø 34 mm plungers |
| Front Tire | 120/70-14" | 120/70-14" | 120/70-15" | 120/70-15" |
| Rear Tire | 140/70-14" | 140/60-14" | 140/60-14" | 160/60-14" |
| Electricity |||||
| Ignition | Electronic inductive discharge ignition, high efficiency, with separate HV coil | Electronic inductive discharge ignition, high efficiency, with separate HV coil | Electronic inductive discharge ignition, high efficiency, with separate HV coil | Electronic inductive discharge ignition, high efficiency, with separate HV coil |
| Battery | 12V 12Ah | 12V 12Ah | 12V 14Ah | 12V 14Ah |
| Dimensions |||||
| Wheelbase | 1,515 mm (59.6 in) | 1,530 mm (60 in) | 1,515 mm (59.6 in) | 1,515 mm (59.6 in) |
| Length | 2,100 mm (83 in) | 2,100 mm (83 in) | 2,100 mm (83 in) | 2,090 mm (82 in) |
| Width | 780 mm (31 in) | 780 mm (31 in) | 780 mm (31 in) | 765 mm (30.1 in) |
| Seat Height | 780 mm (31 in) adjustable | 780 mm (31 in) adjustable | 780 mm (31 in) adjustable | 780 mm (31 in) adjustable |
| Weight (dry) | 169 kg (373 lb) | 174 kg (384 lb) | 174 kg (384 lb) | 199 kg (439 lb) |
| Liquids capacity |||||
| Fuel | 15 L (3.3 imp gal; 4.0 US gal), including approximately 2.8 L (0.62 imp gal; 0.74 US gal) reserve | 15 L (3.3 imp gal; 4.0 US gal), including 2 L (0.44 imp gal; 0.53 US gal) reserve | 15 L (3.3 imp gal; 4.0 US gal), including 2.8 L (0.62 imp gal; 0.74 US gal) reserve | 14.5 L (3.2 imp gal; 3.8 US gal), including 2 L (0.44 imp gal; 0.53 US gal) reserve |
| Engine Oil | 1.3 L (0.29 imp gal; 0.34 US gal) | 1.3 L (0.29 imp gal; 0.34 US gal) (empty), 1.2 L (0.26 imp gal; 0.32 US gal) (at oil and filter change) | 1.3 L (0.29 imp gal; 0.34 US gal) (empty), 1.2 L (0.26 imp gal; 0.32 US gal) (at oil and filter change) | 1.7 L (0.37 imp gal; 0.45 US gal) (empty), 1.5 L (0.33 imp gal; 0.40 US gal) (at oil and filter change) |
| Cooling System | 1.75 L (0.38 imp gal; 0.46 US gal) (approximately) | 2 L (0.44 imp gal; 0.53 US gal) (approximately) | 1.8 L (0.40 imp gal; 0.48 US gal) (approximately) | 1.8 L (0.40 imp gal; 0.48 US gal) (approximately) |
| Performance |||||
| Power Output | 11 kW (15 hp) @ 9500 rpm | 16.5 kW (22 hp) @ 8000 rpm | 16.1 kW (22 hp) @ 7250 rpm | 29.5 kW (40 hp) @ 7500 rpm |
| Torque | 12 N-m @ 8000 rpm | 21 N-m @ 6250 rpm | 23 N-m @ 6000 rpm | 43 N-m @ 5500 rpm |
| Max Speed | 120 km/h (75 mph) | 125 km/h (78 mph) | 125 km/h (78 mph) | 162 km/h (101 mph) |