SYM GTS 125 (2009-2010) Review: The Urban Commuter That Punches Above Its Weight
Introduction
The SYM GTS 125 from 2009-2010 represents an intriguing chapter in the 125cc scooter segment - a category often dominated by Japanese and European brands. Designed for urban mobility but with surprising hints of touring capability, this Taiwanese workhorse deserves a closer look. After spending a week with a well-maintained 2010 model, I came away impressed by its pragmatic design philosophy and mechanical simplicity that still holds relevance today.
Design & Ergonomics: Function Over Flair
At first glance, the GTS 125 won't win design awards, but its purposeful styling grows on you. The flat floorboard accommodates grocery bags or small luggage with ease, while the angular headlight cluster gives it a business-like demeanor. The 780mm (30.7") seat height makes it accessible for riders from 5'4" upwards, though taller riders might find the ergonomics slightly cramped during long rides.
The 167kg (368lb) wet weight feels substantial compared to featherweight competitors, but this mass translates to surprising stability at speed. Plastic panels fit together with better precision than expected in this class, though some trim pieces exhibit the hollow "thunk" typical of budget-conscious manufacturing.
Engine & Performance: Modest Numbers, Smart Execution
The air-cooled 124.6cc single-cylinder engine's 12PS (9kW) output looks underwhelming on paper. But in practice, the CVT transmission's tuning delivers crisp low-end response perfect for city traffic. From 0-50km/h (0-31mph), it keeps pace with larger 150cc scooters, though acceleration flattens noticeably past 70km/h (43mph). Top speed sits at an indicated 95km/h (59mph), but the sweet spot is clearly 40-70km/h (25-43mph) urban cruising.
Fuel efficiency proves exceptional - we observed 38-42km/l (89-99mpg) in mixed riding. The 12-liter tank theoretically enables 450km (280mi) ranges, though I'd recommend refueling by 350km (217mi) to avoid fuel pump strain.
Ride & Handling: Unexpectedly Mature Dynamics
Where the GTS 125 truly surprises is in its riding dynamics. The telescopic fork and twin rear shocks handle rough pavement with composure rare in this class. Tire pressures of 1.5-1.8 bar (22-26psi) front and 2.25-2.5 bar (33-36psi) rear strike a good balance between comfort and stability.
At parking speeds, the weight becomes noticeable, but once moving, the chassis displays a planted, almost motorcycle-like feel. The 120/70-12 front and 130/70-12 tires provide decent lean angles for a scooter, though aggressive cornering reveals the limits of the suspension damping.
Competition: Holding Its Own Against Established Rivals
Honda SH125
The Honda's liquid-cooled engine and lighter 134kg (295lb) weight make it more nimble, but the SYM counters with lower maintenance costs and superior weather protection.
Yamaha NMAX 125
While the Yamaha offers more modern tech like ABS, the GTS 125's simpler design means easier DIY maintenance and better parts availability.
Kymco Agility 125
The Kymco matches SYM's practicality but can't equal the GTS' highway stability. Both share similar build quality, but SYM's dealership network gives it an edge in Europe.
Vespa LX 125
The Vespa wins on style and resale value, but at nearly double the price when new. The SYM offers better value for no-nonsense daily transportation.
Maintenance: A DIY Enthusiast's Dream
The GTS 125 shines in serviceability. Valve adjustments every 3,000km (1,864mi) require 0.10-0.14mm cold clearance on both intake and exhaust - slightly wider than Japanese equivalents but easier for novices to set accurately.
Key Maintenance Points:
1. Oil Changes: Requires 800ml of SAE 10W-40 (API SH/SJ). Consider MOTOPARTS.store's synthetic blend for smoother cold starts.
2. Cooling System: The 1.1-1.4L capacity demands annual coolant flushes. Our aluminum-safe formula prevents corrosion in the simple air-cooled system.
3. Brakes: DOT 4 fluid changes every 2 years are crucial. Upgrade to MOTOPARTS.store's sintered pads for improved bite.
4. Drivetrain: The Variomatic system benefits from our premium belt kits, extending service intervals to 15,000km (9,320mi).
5. Spark Plugs: The NGK CR8E/CR8EIX plugs gap at 0.7-0.8mm. Our iridium version (CR8EIX) improves cold starting reliability.
Long-Term Ownership Considerations
The steel frame holds up well against corrosion if winter-ridden, but we recommend MOTOPARTS.store's anti-rust spray kit for salt-prone areas. The plastic body panels are affordable to replace - keep an eye on our seasonal sales for color-matched sets.
The carbureted engine (2.25 turns out on the air screw) remains reliable but may need seasonal jetting adjustments. Our performance air filter kits help maintain optimal AFR in varying climates.
Customization Potential
While not a blank canvas like some scooters, the GTS 125 responds well to thoughtful upgrades:
- Our 35L top case system maintains the center of gravity
- Upgraded 30W LED headlight bulbs improve night visibility
- Gel seat covers transform the stock saddle for under €50
- Sportier variator weights sharpen acceleration
Conclusion: The Sensible Choice That Ages Gracefully
The 2009-2010 SYM GTS 125 won't quicken your pulse, but it will reliably start every morning. For urban commuters prioritizing function over fashion, it remains a compelling option in the used market. While newer scooters offer more tech, the GTS' mechanical simplicity makes it ideal for riders who value maintainability over gadgets.
At MOTOPARTS.store, we keep this workhorse rolling with comprehensive support - from OEM-spec consumables to performance upgrades. Whether you're maintaining a cherished GTS or breathing new life into a neglected example, our curated selection ensures your scooter remains relevant in today's urban mobility landscape.
