u/No-Variation-4711

Habe auf Kleinanzeigen einen Novation Circuit Tracks für 200€ gekauft. Verkäufer wirkte komplett normal:
- normales Gespräch
- realistischer Preis
- „1 Jahr alt“
- sogar Rechnung zugesagt

Dann wollte er Echtzeitüberweisung. Ich dachte mir noch „komm, wird schon passen“ Kontos sind sowieso verifiziert.

Geld sofort angekommen.
Versand „morgen“.
Dann nochmal „heute leider nicht geschafft“.
Seitdem kompletter Ghosting-Modus und Anzeige gelöscht.

200€ Lehrgeld für meine Dummheit 👍

Bought this Aprilia SX125 back in April, but the weather in Germany has been terrible ever since 😭
Today was finally sunny and dry and damn, this thing is fun.

Can’t wait for summer now ☀️🔥

Hey guys,
I’m riding a 2023 Aprilia SX125 and I’ve already installed:
Arrow exhaust (ESD)

BMC performance air filter

So the bike is already breathing a bit more freely than stock.
With my upcoming oil service, I’m planning to add:
FuelX Pro+

Motul 300V 10W-40

HifloFiltro HF563 oil filter

NGK CR9EIX iridium spark plug

My goal is not chasing horsepower, but improving overall rideability:
smoother throttle response

less hesitation, especially when cold

generally a more “stable” and healthy engine feel

From what I understand, with a freer intake + exhaust setup, the bike might run slightly lean on the stock ECU. That’s why I’m considering the FuelX – mainly to enrich the mixture a bit and make the setup more balanced.
So I’d like to hear your real-world experience:
Does enriching the mixture slightly (via FuelX or similar) actually make a noticeable difference on a 125?

Did your bike feel smoother / stronger in the low-mid range after adding it?

Or is this kind of upgrade overkill for such a small engine?

Appreciate any honest feedback – especially from people who’ve run a similar setup 🙏