Lightweight Design & Racing

We develop, revise, and manufacture components for classic Alfa Romeos with the aim of reducing weight, optimizing every detail to the maximum, and preserving the vehicle's original character. References can be found in our gallery.

Precision, experience, and passion – down to the smallest detail.

  • Specialist for GTA/GTAm Conversions
    & Bodywork
  • Exclusive Lightweight Parts
    Made in Germany
  • In-house development workshop
    & Prototyping
  • Excellent References
    International Class Wins

  • Less weight, more stiffness, less vibration – more performance

    We specialize in exclusive lightweight construction and bodywork for classic Alfa Romeo cars – with a focus on GTA / GTAm conversions.

    Through targeted development work, we make historical racing cars lighter, increase body stiffness, reduce vibrations, and thus noticeably improve lap times, driving dynamics, driving stability, and the driving experience.

    Di Donna Alfamaster is known as the builder of the lightest GTA bodies.

  • Exclusive Lightweight Body

    • Individual lightweight special parts - weight-optimized panels, hoods, doors and add-on parts
    • Targeted reinforcements for high rigidity

    Optimized Air Filter Box / Airbox

    • Ultra-light aluminum
    • Improved airflow for spontaneous response
    • Robust design - ideal for performance-oriented loads
    • Significant enhancement of engine bay and intake system with functional motorsport character

  • Lighter Braking System

    • Aluminum brake calipers with significant weight savings
    • Combination with Alfa Romeo 2.0 105 brake discs
    • Precise, powerful, and fade-resistant braking performance
    • Reduced unsprung weight for better chassis response

    Modified Wishbone Joint for Steering Knuckle

    • Optimized geometry for improved front axle kinematics
    • Ideal for lowered vehicles and/or modern, wider tires
    • At speed, during cornering, and rapid load changes - vehicle remains precise, predictable, and safe.

  • High-Strength Steering Gear

    • More precise feedback and more direct steering feel
    • Greater stability under sporty loads
    • Improved directional stability
    • Smoother handling during rapid load changes
    • Reduced steering effort
    • Optimised bearing technology for increased durability
    • High-strength needle bearing instead of original brass bushing
    • Lower weight with original appearance

    Revised Stabilisers

    • Tuned to the overall chassis
    • Less body roll and more neutral turn-in
    • Clear feedback at the limit
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Project Alfa GTA Junior Wide Body

The Alfa GTA Junior and the Alleggerita Collection are featured by Classic Driver in the linked article with a video. The report mentions our former company name Di Donna Automaster (now Alfamaster) in connection with these special GTA lightweight projects.