Lech Performance

25/12/2025

🎄 Marry Christmas 🎄
…
The new boosted k20z4 engine build will be done 2026

17/06/2025

Fresh batch of pulleys just finished! 🤩
Big thanks to UK Supercharger Repairs for placing an order — I hope you enjoy the product and it fit and performs as expected! 🥳

Also, a shoutout to FB Laser for the precision detailing — top-notch work as always.

17/06/2025

Just received my new high-quality steel adapter for the Brembo Big Brake Kit.

Everything feels solid and precisely made. Huge thanks to FB Laser and for delivering such top-tier quality. Highly recommended!

05/05/2025

05/05/2025

Im proud to announce a new product: billed FN2 auto tensioner pulley

New billed tensioner pulley is available for 130 euro (plus shipping and tax dep. on your country)
- it’s designed for the TTS Supercharger kit with a smaller 105mm Rotrex pulley and keep the serpent belt 7pk1666!!

It’s billed from pice of a core of a light weight extra strong aluminium

You can interchange the Rotrex pulley between 110mm and 105mm by replace only the auto tensioner pulley 🥳 (keep in mind to adjust the rev limit to avoid overspinning of the Rotrex charger)

If you need one: production to shipping: max. 10 days

If you need one, get in touch to me.

14/04/2025

Custom pulley ready to fit it’s for the auto tensioner and 105mm Rotrex race build💪
Another improvement for the TTS kit

14/02/2025

Good boy 👌

29/11/2024

New GP700 Rotrex V2 cams for k20 - amazing quality from Australia 🇦🇺 Spezial thanks to Jeff for developing ✌️
Ready to ship forward to happy customers

01/10/2024

New Product: C38R-122 (+1,000HP for V8's!)

We are thrilled to announce the new C38R-122. 🎉

The new C38R-122 includes a new, 40% larger compressor housing along with a state-of-the-art Ø86mm billet impeller, specifically designed for large displacement engines. 💪
This new unit flows 1.10 kg/s (≈1900 CFM) and can create a pressure ratio of over 2.8! 📈

As always, the compressor map and performance have been validated on our in-house SAE flow rig, but this time we also teamed up with an American V8 specialist 🇺🇸 to prove its worth. On an LS3 (6.8L) and at max supercharger speed, we were easily pushing 1,000hp 🏎️ with conservative tuning, confirming the sheer power of our new C38R-122!

So, say hello to the new Rotrex Supercharger, a beast specially developed for V8 engines: The C38R-122. 🔥

Production parts are ordered, and you can already put your orders in through our dealers - So what are you waiting for!?

20/07/2024

Something new is coming 🤩

It’s getting closer - The C30-94 T2RR Conversion.
(RR = Red Ring and was named before the red impeller appeared before anyone thinks I’ve copied 😁)
Sorry it’s taking time, but things need to be right and tested.
This will hopefully give more power to those who can’t or do not want to bottom mount.