Fitment reference
Kymco AK 550 fitment & service data
A scooter built 2017–2026. Use this page to confirm which parts are shared across the run and which change with the model year before you order.
Model data
| Manufacturer | Kymco (Taiwan) |
|---|---|
| Model | AK 550 |
| Type | Scooter |
| Production run | 2017–2026 |
| Model years in database | 10 |
| Latest model year | 2026 |
Category-by-category specs
Generic specs that hold across this model run. Always confirm part numbers against your VIN.
Engine & Filters
Oil filters, air filters, spark plugs and sump hardware. Motorcycles share oil between engine, gearbox and usually a wet clutch, so oil and filter quality matter more than on a car.
| Oil spec | JASO MA2, viscosity per the owner's manual |
|---|---|
| Filter | Spin-on cartridge or paper element, model-specific |
| Interval | 5,000-10,000 km depending on oil type and use |
| Install | 40 min · Easy |
Brakes
Sintered and organic pads, floating discs and braided lines. Pads and fluid are the two cheapest upgrades that change lever feel more than anything else on a motorcycle.
| Pad compound | Sintered for all-weather bite, organic for quiet low-dust |
|---|---|
| Fluid spec | DOT 4 (DOT 5.1 where specified) — never DOT 5 silicone |
| Disc minimum | Typically 4.0-4.5mm front, stamped on the carrier |
| Install | 45 min · Easy |
Tires & Wheels
Sport, sport-touring and adventure rubber plus valves, rim tape and balance weights. Tires are the single largest handling variable on any motorcycle and the one riders leave longest.
| Sizing | e.g. 120/70 ZR17 front, 180/55 ZR17 rear |
|---|---|
| Pressure | Cold, per the swingarm or chain-guard sticker |
| Service life | 5 years from the DOT date code, regardless of tread |
| Install | 60 min · Advanced |
Electronics
USB chargers, phone mounts, lithium batteries and wiring accessories. Fuse every added circuit and take switched power from a relay, not directly from the battery.
| System voltage | 12V, charging at 13.8-14.6V at 5,000 rpm |
|---|---|
| Battery types | AGM lead-acid or LiFePO4 lithium |
| Accessory fusing | 5-10A inline per circuit |
| Install | 45 min · Moderate |
Lighting
LED headlight assemblies, sequential indicators and auxiliary driving lights. LED conversions cut current draw sharply, which is why indicator swaps usually need resistors or an LED flasher relay.
| Voltage | 12V DC, regulated |
|---|---|
| Indicator load | LED needs 21W resistors or an LED flasher relay |
| Approval | E-mark / DOT for road use |
| Install | 60 min · Moderate |
Maintenance
Chain cleaning kits, lubricants, paddock stands and workshop consumables. A pair of paddock stands turns most chain and tire jobs from a garage bill into a 20-minute task.
| Rear stand | Spool (8mm/10mm bobbins) or universal cradle |
|---|---|
| Chain lube | O-ring and X-ring safe |
| Torque range | 20-100 Nm covers most chassis fasteners |
| Install | 0 min · Easy |
Parts that are year-specific on this bike
- Bodywork and fairing panels — moulded per generation, never cross-generation
- Seat pans and cowls — latch positions change with refreshes
- Wiring, ECU and lighting connectors — often revised mid-run
- Brake master cylinders and lever fitment — check the assembly, not the model name
Torque reference for common jobs
General ranges by thread size for the fasteners on this bike. Confirm the exact figure in the service manual for your model year before final tightening.
| Thread | Tool | Steel | Alloy | Where you meet it |
|---|---|---|---|---|
| M5 | 4 mm hex / 8 mm | 5–7 Nm | 4–5 Nm | Fairing bosses, instrument brackets, small covers |
| M6 | 5 mm hex / 10 mm | 9–12 Nm | 7–10 Nm | Engine covers, sprocket cover, heat shields, light brackets |
| M8 | 6 mm hex / 12–13 mm | 22–26 Nm | 18–22 Nm | Caliper mounts, disc bolts, footpeg hangers, exhaust hangers |
| M10 | 8 mm hex / 14–17 mm | 40–50 Nm | 32–40 Nm | Fork clamp bolts, rear sprocket nuts, shock mounts, engine mounts |
| M12 | 10 mm hex / 19 mm | 75–90 Nm | 60–72 Nm | Front axle, front sprocket nut, swingarm pivot bolts |
| M14 | 22 mm | 115–135 Nm | 95–110 Nm | Rear axle nut on mid-size bikes, some swingarm pivots |
| M16 | 24 mm | 170–200 Nm | 140–165 Nm | Rear axle nut on large bikes, steering-stem nut on some models |
Per-job figures and the full chart: motorcycle torque reference.
Getting the torque right
- Torque figures assume clean, dry, undamaged threads. Oil on a thread can raise the real clamping load by 20% or more at the same wrench reading.
- Where the manual calls for thread-lock, the figure is a wet figure — apply the locker, then torque immediately before it cures.
- Tighten in two passes: to roughly 70% of the figure across all fasteners, then to the full figure in the same order.
- Replace, never reuse, any fastener specified as stretch-to-yield, and always fit a fresh crush washer on a drain plug.
What each job costs on the Kymco AK 550
Brake pad replacement
0.8 h shop labour · Easy DIY
Chain and sprocket kit replacement
1.5 h shop labour · Moderate DIY
Front and rear tire replacement
1 h shop labour · Advanced DIY
Oil and filter service
0.7 h shop labour · Easy DIY
Fork seal and oil replacement
2.5 h shop labour · Advanced DIY
Slip-on exhaust fitting
1 h shop labour · Moderate DIY
Battery replacement
0.5 h shop labour · Easy DIY
Fairing panel replacement
3 h shop labour · Moderate DIY
Shop parts for the Kymco AK 550
By model year
2026 AK 550
Everything that fits
2025 AK 550
Everything that fits
2024 AK 550
Everything that fits
2023 AK 550
Everything that fits
2022 AK 550
Everything that fits
2021 AK 550
Everything that fits
2020 AK 550
Everything that fits
2019 AK 550
Everything that fits
2018 AK 550
Everything that fits
2017 AK 550
Everything that fits