Our Mercedes C43 AMG Coupe - The Ultimate Mountain Road Vehicle - Mini GTR

Our development Mercedes-AMG C43 Coupe showcases what the M276 platform can do with a thoughtful Stage 2 package. On pump gas, this setup delivers 485 hp and 530 lb-ft, backed by hardware that’s proven on mountain roads and daily routes alike. The result is a compact, rear-biased AWD coupe that rotates predictably, bites hard on turn-in, and accelerates with genuine authority.

Stage 2 Power — Consistent, Streetable, Fast

Built around the M276 3.0L Biturbo V6, our Stage 2 calibration is engineered for reliable torque, safe engine operation, and repeatable performance on pump fuel. Core components include:

• Stage 2 ECU Tune — optimized for high-flow downpipes and 91–93 octane
• Catless Downpipes — reduce backpressure and bring boost in earlier
•  GFB Diverter Valves — ensures consistent boost retention under repeated load
• BMC High-Flow Filters — improves airflow while retaining OEM airbox functionality

This combination delivers immediate throttle response and a wide torque curve—ideal for tight elevation changes and mountain road driving.

Braking Confidence — Built for Repeated Mountain Descents

Power and chassis tuning mean nothing without consistent stopping performance. To handle continuous downhill braking and back-to-back corners, this C43 received a motorsport-grade brake upgrade:

• Stainless Steel Braided Brake Lines — improves pedal feel and eliminates factory rubber line expansion under heat
• Carbotech APX Pads — high-friction compound with strong cold bite and fade resistance
• Castrol SRF Racing Brake Fluid — 590°F wet boiling point for reliability on extended downhill runs

Chassis Tuning — Front Bite, Predictable Rotation

To match the power, we focused on front-end authority and rear stability. The C43’s rear-biased AWD (approx. 30/70 split) rewards a setup that lets the car rotate and then drive off the corner on boost.

• Adjustable rear camber arms with a custom performance alignment (increased camber, slight rear toe-in)
• W205 C63 wheels: 19×9" front and 19×9.5" rear
• Bridgestone RE-71RS (stretched fitment): 235 front / 245 rear
• Rolled front fenders for proper clearance at full compression

On the mountain, the car is composed and confidence-inspiring: the front bites hard, the rear rotates cleanly, and power delivery remains consistent even after repeated uphill pulls.

All-Season Readiness — Snow Days Included

We also maintain a winter configuration for mountain weather:

• Stock C43 wheels for durability and easy tire changes
• Continental ExtremeContact DWS06+ all-season tires for snow and cold-weather traction

Combined with the C43’s AWD and calibrated traction control, the car remains composed and usable when conditions turn.

Why This C43 Feels Like a “Mini GTR”

Our Stage 2 C43 Coupe shares key traits enthusiasts love about the Nissan Skyline: a twin-turbo V6, a compact two-door package, rear-biased AWD, and the ability to rotate and drive off a corner with real urgency. It’s a smaller, more daily-friendly package that still delivers serious pace on technical roads.

• Architecture: 2-door, twin-turbo V6, rear-biased AWD character
• Dynamics: strong front-end bite, controllable rotation, confident exits on throttle
• Usability: comfortable, quiet enough on cruise, and easy to live with year-round

Build Sheet (Current Configuration)

Note: Catless components are intended for off-road/track use where permitted. Professional installation and ECU calibration are strongly recommended to ensure reliability and compliance with local regulations.