These are the earlier generations of Zontes' M-line maxi scooter, and they matter more than a discontinued model normally would - because they are still on the road in numbers across Spain, Italy and Latin America, and because their owners are exactly the people who need aftermarket parts rather than dealer stock. The 310M came first, powered by the 312 cc single. The 350M followed with the 348 cc unit. Both were then replaced by the current 368M, which continued the same M-line concept with the newer 368 cc engine.
Why this collection exists
Superseded models are where aftermarket demand concentrates. A 310M owner walking into a dealer today will often find that original parts have moved on, while the bike itself has years of service left. That makes this collection the practical one in the range - less about styling upgrades and more about keeping a working scooter working: drive belts, rollers, variator components, brake pads and discs, air and oil filters, spark plugs, mirrors, levers, indicator units and bulbs.
Upgrades still worth making
Screens and top case racks remain the two most common fitments, and both are areas where aftermarket options often exceed what was originally offered. Comfort and gel seats are worth considering on an older scooter, since seat foam degrades with age and mileage. Covers, disc locks and alarms round it out - an older machine is more likely to live outside and more likely to be a theft target.
Fitment across three generations
Covers the ZT310-M / M310 and the ZT350-M / M350. The M line ran 310M, then 350M, then 368M, and some parts carry across the full lineage while others changed with the engine and bodywork updates. Because the 350 replaced the 310 with a displacement increase on a largely carried-over platform, cross-fitment between those two is more common than between either and the current 368M. Always check the year and displacement on the product page rather than relying on the letter alone.