RENNtech

9G Transmission Upgrade TCU Tune

$2,480.00

SKU: 9G-TCU-UPGRADE

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The RENNtech TCU Tune is a software upgrade for the Mercedes-Benz 9G-Tronic transmission, engineered to enhance driving dynamics and acceleration. This upgrade specifically focuses on optimizing the transmission's performance by increasing its clutch torque limits and clutch pressure. These adjustments contribute to significantly faster shift times, reducing lag and providing a more responsive feel. The software aims to match the power delivery of engine tuning for a cohesive performance improvement. Fitment for this TCU Tune includes a range of Mercedes-Benz models such as the W463 G-Wagon, W205 C-Class, W213 E-Class, X290 AMG GT63 4-Door Coupe, W222 S-Class, X253 GLC-Class, W166/W167 GLE-Class, and X166/X167 GLS Class. It is noted that this TCU upgrade is included with R-Line and Turbo upgrades and is recommended for vehicles already equipped with an ECU tune.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandRENNtech
Part Number9G-TCU-UPGRADE
CategoryIgnitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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