Popular Products
Drivetrain
The Weistec 722.9 Transmission Pan provides improvement to the performance of the 7 speed 722.9 transmission in a few ways. Primarily is the increased flu...
$599.99
The Weistec Engineering 722.9 Bulletproof Build Package is a complete set of parts needed for building the 7 speed 722.9 transmission. The most important ...
$3,649.99
Engine
Weistec M157 / M278 spark plugs are designed and manufactured for not only high power applications but also factory replacement. The factory iridium plugs do no...
$274.99
These Weistec filters are compatible with the 5.5 Biturbo and the 4.7 Biturbo (M157 and M278 engines). When analyzing the factory airbox and flow characteristic...
$245.00
Our forged pistons and billet rods are designed as direct replacement for the OEM pistons and rods. The pistons use a wrist pin that is stronger and of a better...
$7,999.99
The M157 W.1 Package is provides an excellent starting point for extracting more power from the M157 Biturbo engine. The package consists of our M157 ECU Upgrad...
$2,499.99
The main bolts of the M157 engine are torque to yield bolts, making them one time use bolts. When assembling an M157 engine, new main bolts must be used to ensu...
$799.99
Weistec has exclusively partnered with ARP, the top name in performance engine hardware. Head studs are used to fasten the heads to the block in place of the fa...
$1,499.99
Exhaust
Weistec Engineering offers True Downpipes for M157 AMG and M278 powered vehicles. Replacing the small and restrictive factory downpipes delivers significant gai...
$3,499.99
RADO manufactures the best downpipes that you can purchase for your car. Our downpipes are made using high quality stainless steel. We use stainless...
$1,849.00
RADO manufactures the best downpipes that you can purchase for your car. Our downpipes are made using high quality stainless steel. We use...
$2,649.00
Our performance down pipes replace the restrictive stock exhaust with high flow, 200 cell sport catalytics for improved performance, reduced back pressure, grea...
$4,940.00
Suspension
This is the second generation of the RENNtech G-Wagon performance shock system. As any G-Wagon owner knows, the vehicle is an incredible off-road machine, but s...
$4,880.00
Includes $200 in KMD Tuning Gift Card
With the new Dynamic Damping Control, DDC, KW has designed a new coilover suspension, which uses the original 3-way but...
$7,179.99