SKU: PKG.192.GT63.EP.R1
Custom order only. $40 US shipping is included in the displayed package price. International orders require contact for an accurate shipping quote.
A coordinated software and intake/exhaust-control upgrade for the M177 4.0L V8 hybrid coupe. The package brings together RENNtech calibration and supporting components in one vehicle-specific offering.
RENNtech reports 971 hp and 931 lb-ft, with gains of 209 hp and 80 lb-ft over its measured stock baseline. Results depend on fuel and conditions; these are manufacturer-reported figures, not guaranteed results or a comparison with Mercedes-Benz published hybrid ratings.
Mercedes-AMG GT 63 S E PERFORMANCE two-door Coupe, C192, M177 V8 hybrid. US model introduced for MY2025; VIN and ECU compatibility must be confirmed for your specific vehicle before fulfillment. Not listed for X290 four-door models or non-hybrid GT55/GT63/GT63 PRO.
Include your VIN in the order notes. 93+ octane gasoline is required. Lower-output calibration may be needed where fuel quality is unsuitable. Contact Zefer before ordering for fuel and calibration questions. Professional installation and programming are required; installation is not included.
Available by custom order through RENNtech. No fixed production or dispatch interval is published for this package; contact Zefer for the current supplier estimate. Delivery estimates are not guaranteed. Scheduling depends on payment clearance, order confirmation and completion of technical details. RENNtech processes shipments Monday–Friday, excluding holidays and closures. Tracking is provided when available.
RENNtech software is VIN-specific. ECU programming and handheld-tuner software are nonreturnable and nonrefundable; defective software is handled under the manufacturer's in-kind replacement policy. Special-order deposits are nonrefundable. Eligible unused hardware returns require prior authorization, are subject to a 15% restocking fee and prepaid return freight, and are not accepted after 30 days under RENNtech's policy. Manufacturer warranty eligibility and exclusions apply.
Please review RENNtech's full Terms & Conditions and Zefer Performance's checkout terms and return policy before purchasing. Photos are manufacturer illustrations; appearance may vary.
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