SYM
2015 - 2021 SYM SYMPHONY 125

SYMPHONY 125 (2015 - 2021)

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SYM SYMPHONY 125 (2009–2014): A Sleek Urban Companion That Packs Surprises

Introduction

The SYM SYMPHONY 125, produced between 2009 and 2014, stands out as a scooter that bridges practicality and unexpected thrills. Designed during an era when urban mobility demanded both efficiency and style, this Taiwanese-built machine carved its niche with tall wheels, a torquey engine, and a chassis that mimics motorcycle dynamics. After spending a week weaving through city traffic and testing its limits on open roads, I’ve come to appreciate its quirks and strengths—a scooter that feels more like a lightweight motorcycle than a grocery-getter.


Design & Styling: Understated Elegance Meets Functionality

The SYMPHONY 125’s design leans into the “high-wheel” scooter trend popularized by European models like the Aprilia Scarabeo. Its 16-inch cast-alloy wheels dominate the profile, giving it a taller, more aggressive stance compared to typical small-wheeled commuters. The bodywork is refreshingly minimalist—no flashy graphics or chrome overload here. Instead, matte gray, black, and silver finishes dominate, appealing to riders who prefer subtlety.

Build quality is generally solid, with tight panel gaps and durable plastics. However, the front storage compartment’s lid stands out as a sore thumb—it never quite sits flush, a reminder that cost-cutting exists even in well-engineered packages. The split storage behind it is surprisingly practical, though, with enough space for keys, a phone, and a wallet.

At 760 mm (29.9 inches), the seat height is accessible for shorter riders, while the floorboard’s depth accommodates taller individuals without forcing knees upward. The analog speedometer and fuel gauge are charmingly retro, though the lack of a clock or tripmeter feels like a missed opportunity in an otherwise thoughtful layout.


Engine & Performance: Small Displacement, Big Personality

Powered by a 124.6 cc air-cooled single-cylinder engine, the SYMPHONY 125 delivers 8.5 hp (6.25 kW) and 8.33 Nm (6.1 lb-ft) of torque. Numbers don’t tell the full story: this engine prioritizes low-end grunt over top-speed heroics. Throttle response is crisp, thanks to a CV carburetor, and the centrifugal clutch engages smoothly from a standstill.

Acceleration feels surprisingly muscular up to 80 km/h (50 mph), with the CVT transmission avoiding the “rubber-band” effect common in smaller scooters. Cruising at 90–95 km/h (56–59 mph) is effortless, though the engine buzzes noticeably at these speeds. On a calm morning, I squeezed out 101 km/h (63 mph) on the speedo—enough for highway sprints but not for sustained long-distance rides.

Fuel efficiency is a highlight. SYM claims 3.8 L/100 km (62 US mpg), and my mixed riding yielded nearly identical results. The 5.5-liter (1.45 US gal) tank translates to a 145 km (90 mi) range—perfect for urban commutes.


Handling & Ride Experience: Where the SYMPHONY Shines

The SYMPHONY’s 16-inch wheels and 1,330 mm (52.4-inch) wheelbase give it stability rare in its class. Steering is precise, requiring minimal input to flick through traffic. At walking speeds, the front end feels slightly twitchy, but once rolling, it carves corners with confidence.

The telescopic front fork and rear shock absorber (adjustable for preload) strike a balance between comfort and sportiness. Solo riders will find the suspension taut yet compliant, though heavier riders might want to crank up the rear preload. Over broken pavement, the SYMPHONY stays composed, avoiding the pogo-stick effect plaguing budget scooters.

Braking performance is mixed. The 226 mm front disc bites hard with good modulation—a rarity in this segment. The rear drum (or optional disc on later models), however, lacks urgency. In wet conditions, rely on the front brake and plan stops early.


Comfort & Practicality: Daily Riding Done Right

SYM nailed the ergonomics. The seat is firm yet supportive, and the upright riding position keeps wrists and back relaxed. Wind protection is minimal—this isn’t a touring machine—but the tall handlebars offer leverage for tight maneuvers.

Storage includes a helmet-sized underseat compartment and the aforementioned front cubby. The fuel filler under the seat is cleverly placed, though refueling requires dismounting. At 109–116 kg (240–256 lbs), the SYMPHONY is easy to maneuver, and the center stand engages with a satisfying thunk.

Now, the sidestand: it’s a disaster. The spring-loaded design retracts automatically when weight is lifted, making parking on uneven ground a nerve-wracking experience. Always use the center stand.


Competition: How Does It Stack Up?

Aprilia Scarabeo 125: The SYMPHONY’s spiritual ancestor. The Scarabeo offers similar handling but with Italian flair and a heftier price tag. SYM counters with better fuel economy and lower maintenance costs.

Honda SH125: Honda’s premium offering boasts liquid cooling and modern tech like ABS (post-2014). The SH125 is smoother at high speeds but lacks the SYMPHONY’s raw, mechanical charm.

Yamaha Majesty 125: A maxi-scooter with superior comfort and storage. The Majesty feels bulkier in traffic, though, and its higher seat may intimidate shorter riders.

Verdict: The SYMPHONY 125 holds its own with agile handling and simplicity. It’s ideal for riders who value engagement over gadgetry.


Maintenance: Keeping Your SYMPHONY Singing

Ownership costs are where the SYMPHONY truly shines. The air-cooled engine avoids complex radiators or coolant changes, and the belt final drive requires less upkeep than chains.

  • Oil Changes: Use SAE 10W-40 (700 ml/0.74 qt with filter). Replace every 3,000 km (1,864 mi).
  • Belt Inspection: Check for cracks or wear every 10,000 km (6,214 mi). Replacement is straightforward—perfect for DIYers.
  • Tire Pressure: Front 1.75 bar (25 psi), Rear 2.0–2.25 bar (29–33 psi). The 16-inch tires strike a balance between grip and longevity.
  • Spark Plug: NGK CR7HSA. Gap per manufacturer specs—easy access means no workshop visits.
  • Brake Fluid: DOT 4. Flush every two years to maintain lever feel.

At MOTOPARTS.store, we stock everything from OEM-spec belts to performance brake pads. Upgrade the rear shock for heavier loads or stick with SYM’s reliable factory parts—either way, this scooter won’t bankrupt you.


Final Thoughts: Who Should Buy the SYMPHONY 125?

The SYM SYMPHONY 125 isn’t perfect, but its flaws are overshadowed by sheer rideability. It’s a scooter for riders who:
- Crave motorcycle-like handling in a compact package
- Value simplicity and low running costs
- Appreciate understated design over flashy trends

While newer models offer tech like fuel injection, the SYMPHONY’s carbureted honesty and mechanical grip make it a joy to ride. Whether you’re threading through gridlock or exploring backroads, this scooter delivers grins per gallon—and isn’t that what riding’s all about?




Specifications sheet

Engine
Stroke: Four-stroke
Ignition: CDI
Max power: 6.5 kW | 9.0 hp
Max torque: 8.3 Nm
Fuel system: Carburetor (CV)
Lubrication: Dry sump
Max power @: 7500 rpm
Displacement: 125 ccm
Max torque @: 6500 rpm
Configuration: Single
Cooling system: Air-cooled
Compression ratio: 10.5:1
Number of cylinders: 1
Dimensions
Wheelbase: 1330 mm (52.4 in)
Dry weight: 109
Wet weight: 114
Seat height: 760 mm (29.9 in)
Overall width: 690 mm (27.2 in)
Overall height: 1125 mm (44.3 in)
Overall length: 2000 mm (78.7 in)
Fuel tank capacity: 5.5 L (1.45 US gal)
Drivetrain
Clutch: Centrifugal
Final drive: belt
Transmission: CVT automatic
Electrical
Battery: 12V 6 Ah
Headlight: 35/35W halogen
Starter system: Electric & kick
Maintenance
Rear tire: 110/70-16
Engine oil: 10W40
Front tire: 110/70-16
Brake fluid: DOT 4
Spark plugs: NGK CR7HSA
Engine oil capacity: 0.7
Final drive maintenance: Belt inspection every 10,000 km
Engine oil change interval: Every 5000 km or 2 years
Valve clearance check interval: 24,000 km / 15,000 mi
Recommended tire pressure (rear): 2.0 bar (29 psi) solo, 2.25 bar (32.7 psi) with passenger
Recommended tire pressure (front): 1.75 bar (25.4 psi)
Chassis and Suspension
Frame: Steel underbone
Rear brakes: 130 mm drum (optional 226 mm disc)
Front brakes: 226 mm disc, 1-piston caliper
Rear suspension: Single hydraulic shock absorber, adjustable preload
Front suspension: Telescopic fork, 30 mm stanchions
Rear wheel travel: N/A (scooter configuration)
Front wheel travel: N/A (scooter configuration)






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