St. Charles Garage

08/24/2026

It appears Dana has discontinued the famous 40K transmission cooler.

Fortunately, there are several aftermarket options that are nearly identical and make excellent replacements.

We put together a write-up comparing some of the most worthy alternatives.

Link in the comments.

08/03/2026

Now Available!

Audi RS3 (8V 8Y) & TTRS (8S) DAZA DNWA Rotating Assembly

Complete rotating assembly package engineered for Audi RS3 (8V 8Y) and TTRS (8S) models featuring premium components.

Choose between professional crankshaft balancing through our shop for a ready to install solution or opt to handle that at your local machine shop. Designed for builders seeking quality parts consolidated into a single, convenient package.

Link below!

07/20/2026

Now Available!

Audi DAZA/DNWA Aluminum Rods!

Link below.

06/19/2026

Atomic Fab Trailblazer SS motor mounts are in stock! 🇺🇸

Link in the comments!

06/11/2026

‼️Boost Ready 408" LS IN STOCK!‼️

$6950

9.7:1 - 10.2:1 compression ratio depending on cylinder heads.

-GM Gen 4 Iron Block
-Billet Steel Main Caps
-BTR 4" Stroke 4340 Forged Crankshaft
-BTR 4340 Forged Rods w/ ARP2000 Bolts
-Wiseco -15CC 2618 Forged Pistons
-Tool Steel HD Pins
-Performance Bearings
-Dura-Bond Cam Bearings
-ARP Main Studs
-Professionally Balanced
-Professionally Assembled
-Professional Machine Work
-GM 58X Reluctor

Compression Ratio:
9.7:1 w/ 70cc Combustion Chamber
9.9:1 w/ 68cc Combustion Chamber
10:1 w/ 66cc Combustion Chamber
10.2:1 w/ 65cc Combustion Chamber

LINK IN COMMENTS!

05/26/2026

Kooks Sale!

We are running a limited time sale on Kooks Trailblazer SS catted header kits.

https://stcharlesgarage.com/products/trailblazer-ss-kooks-headers-catted-y-pipe

05/25/2026

05/11/2026

The shop will be closed May 16th-May 25th.

Any orders made during this period will be shipped upon our return.

04/23/2026

1000HP Spec. Audi DAZA/DNWA Pistons are BACK IN STOCK!

Link below.

04/08/2026

In Stock!

Fire Ring Head Gaskets – Audi DAZA & DNWA

Designed for high-boost, high-cylinder-pressure applications, these fire ring gaskets provide the sealing reliability required for 1,000+ horsepower builds.

Ideal for builds where traditional MLS gaskets reach their limit.

Fire Ring Head Gasket Kit Audi RS3 (8V 8Y) & Audi TTRS (8S) DAZA DNWA Engines