Sito is one of the most well-known names when it comes to replacement exhausts for 2-stroke scooters and mopeds.The exhausts are made as direct replacements for the original exhaust, with a fit close to OEM and riding behavior that often feels a bit freer than the standard exhaust you started with.
What makes Sito popular?
Sito exhausts are loved because they install easily and because the riding behavior remains civilized. Not a loud racing exhaust, but a neat upgrade you can ride daily. Especially if your original exhaust has been in use for years and is gradually clogging up with carbon deposits, you will notice the difference immediately when accelerating and maintaining speed.
Sito Plus
The Sito Plus is the most requested variant. It has slightly finer flow than the standard factory exhaust and gives your engine more room to rev. The sound remains subdued and the fit is good. A logical choice if you want to replace the original exhaust without immediately thinking about tuning.
For which models?
Sito makes exhausts for common 2-stroke platforms, including Piaggio, Vespa, and Gilera models such as the Zip, NRG, and Runner. The fit depends on your engine block, year of manufacture, and sometimes the specific engine variant. Always check your model and version before ordering.
Sito exhausts exist exclusively for 2-stroke models. There are no Sito exhausts for 4-stroke scooters.
With or without plug?
Many Sito exhausts come with a plug in the bend or muffler part. With plug, you stay closer to the original specifications. Without plug, the engine exhales more freely, which sometimes gives a little extra acceleration. If you ride on public roads, always check that your setup still complies with legal requirements.
What to watch for when choosing?
Check your brand, model, year, and engine type before ordering a exhaust. Small differences in mounting points or the bend of the exhaust can determine whether it fits or not. When in doubt, always include the exact engine type in your search.
Installation
Always use a new exhaust gasket when installing. Preferably install when the engine is cold, place everything loosely first, then tighten evenly. After a short test ride, check the bolts again. A small leak is immediately noticeable in the sound.
Ordering a Sito exhaust
Have you checked your model and know which variant you need? Then order directly via Fresh Parts. If you are still unsure, please contact Fresh Parts customer service to be sure you order the right exhaust for your engine and version.
Frequently asked questions
Are Sito exhausts suitable for 4-stroke scooters?
No. Sito exhausts are exclusively made for 2-stroke models. There are no Sito exhausts available for 4-stroke scooters.
Does a Sito Plus fit my Piaggio Zip?
The Sito Plus is available for many Piaggio Zip versions, but the fit depends on your year and engine variant. Always check your exact model before ordering.
Do I need to adjust the carburetor after installation?
With a standard Sito Plus without modifications, this is usually not necessary. If you ride without a plug or already have other tuning, a small jet adjustment might be wise. Check your spark plug color after a loaded ride.
How long does a Sito exhaust last?
That depends on use and maintenance. Regularly check for rust, cracks, and loose fastening. An exhaust that is well secured and has no false air usually lasts a long time.
Can I contact you if I can't figure it out?
Yes. If you are unsure which Sito exhaust fits your Piaggio, Vespa, or Gilera, please contact Fresh Parts customer service.