Quadro 350 S (2014-2015): A Scooter That Defies Convention
Introduction
The Quadro 350 S, produced between 2014 and 2015, is one of the most intriguing scooters to emerge from Italy’s storied two-wheeled heritage. With its unconventional two-front-wheel design and hydraulic tilting suspension system, this scooter challenges traditional urban mobility concepts while delivering surprising practicality. Designed for riders who crave stability without sacrificing agility, the Quadro 350 S carves its own niche in the maxi-scooter segment. After spending time with this machine, it’s clear that Quadro aimed to blend innovation with everyday usability—but how well does it hold up?
Design & First Impressions
At first glance, the Quadro 350 S looks like a futuristic experiment. The dual front wheels (110/80-14 tires) and compact steel-tube frame give it a robust, almost sci-fi stance. Color options like white, grey, black, and occasional bold choices like blue or white/green ensure it stands out in traffic. The integrated windshield and muscular bodywork hint at touring potential, though its 2270 mm (89.4 inches) overall length keeps it nimble enough for city use.
The build quality feels solid, with no obvious cost-cutting in materials. The 780 mm (30.7-inch) seat height accommodates most riders, though the 200 kg (440.9 lbs) dry weight is noticeable when pushing it off the stand. Practical touches include a 13-liter (3.43-gallon) fuel tank and a flat floorboard for storage—though the latter is narrower than traditional scooters due to the front-wheel configuration.
Engine & Performance
Powering the Quadro 350 S is a 346 cc single-cylinder four-stroke engine, available with either a carburetor (2014 models) or fuel injection (2015 variants). The fuel-injected version produces 27 HP (19.7 kW) at 7500 RPM, while the carbureted model delivers 23 HP (16.8 kW). Both versions share a liquid-cooled system and a belt-driven CVT transmission, ensuring smooth acceleration typical of automatic scooters.
Twist the throttle, and the engine responds with a muted growl, pushing the scooter to a top speed of around 120 km/h (75 mph)—enough for highway stretches. Torque peaks at 28.8 Nm (21.2 ft.lbs) at 5500 RPM, translating to confident uphill climbs and overtaking maneuvers. The fuel-injected 2015 model feels slightly sharper at low RPMs, but both versions suffer from mild vibration at high revs. Fuel efficiency averages 25-30 km/l (58-70 MPG), making it a frugal companion for daily commutes.
Handling & Ride Experience
Here’s where the Quadro 350 S truly shines. The Hydraulic Tilting System (HTS) allows the front wheels to lean like a conventional motorcycle while maintaining the stability of a three-wheeler. Cornering feels surreal at first—imagine carving a turn with the confidence of a trike but the agility of a sporty scooter. The system uses oleo-pneumatic suspension with 100 mm (3.9 inches) of wheel travel, absorbing potholes without drama.
At low speeds, the steering feels heavier than a standard scooter due to the dual front wheels, but the payoff arrives at higher speeds. The Quadro remains planted on uneven roads, and crosswinds barely unsettle it. The 140/70-15 rear tire provides ample grip, though aggressive riders might crave more feedback from the front end. Braking is handled by single hydraulic discs front and rear, offering adequate stopping power for urban use, but consider upgrading brake pads for spirited riding.
Comfort & Practicality
The Quadro 350 S prioritizes comfort. The plush seat accommodates two adults comfortably, and the upright riding position reduces fatigue on long rides. Wind protection from the stock windshield is decent up to 90 km/h (56 mph), though taller riders might opt for an aftermarket taller screen. Storage is limited to under-seat compartments (fitting a full-face helmet) and a small glovebox—a trade-off for the unique front suspension design.
Standout features include the electric starter (reliable even in cold weather) and a 12-volt electrical system capable of powering accessories like heated grips. The Euro 3-compliant engine ensures it meets most urban emission standards, though carbureted models may require more frequent tuning.
Competition
The Quadro 350 S faces rivals from established players like Piaggio MP3 300, Yamaha Tricity 300, and Kymco CV3. Here’s how it stacks up:
- Piaggio MP3 300: The MP3’s tilting trike design is similar, but its 278 cc engine feels less punchy. The Piaggio wins in storage space and dealer network, but the Quadro’s suspension feels more refined.
- Yamaha Tricity 300: Yamaha’s dual-front-wheel scooter emphasizes agility with a lighter 165 kg (364 lbs) frame. However, the Tricity’s 292 cc engine lacks the Quadro’s highway confidence.
- Kymco CV3: A newcomer with a 550 cc twin-cylinder engine, the CV3 targets touring riders. It’s more powerful but heavier and pricier.
The Quadro’s niche lies in balancing innovation with approachable pricing. It’s ideal for riders seeking three-wheel stability without the bulk of larger models.
Maintenance
Owning a Quadro 350 S requires attention to a few key areas:
- HTS System: The hydraulic tilting mechanism needs regular checks. Inspect seals and fluid levels every 5,000 km (3,100 miles). MOTOPARTS.store offers retrofit kits for worn components.
- Belt Drive: The CVT belt should be replaced every 15,000 km (9,300 miles). Opt for high-tensile aftermarket belts for improved durability.
- Cooling System: Liquid cooling minimizes overheating, but flush the coolant every 2 years. Our store stocks compatible ethylene glycol mixtures.
- Brakes: Upgrade to sintered brake pads for better bite, especially if you frequently ride with a passenger.
Common wear items like tires (110/80-14 front, 140/70-15 rear) and air filters are widely available. Stick to OEM-spec oils for the wet-sump lubrication system to avoid clutch slippage.
Final Thoughts
The Quadro 350 S isn’t just a scooter—it’s a statement. Its innovative design bridges the gap between motorcycle dynamics and scooter practicality, offering a ride that’s both secure and engaging. While its weight and limited storage may deter pure urban commuters, it excels as a versatile machine for riders who value stability on varied terrain. For those invested in keeping their Quadro in peak condition, MOTOPARTS.store provides everything from performance upgrades to essential maintenance kits, ensuring this Italian oddball remains a joy for years to come.
