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SKU
12G940-ST3_MAS

12G940 Stage 3 1275cc Cylinder Head - New

£2,195.00 £1,829.17
SKU
12G940-ST3_MAS

Take your Classic Mini to the next level with the Mini Sport 1275cc Cylinder Head, Performance Model. Engineered for maximum power and efficiency, this Stage 3 gas-flowed and ported head delivers noticeable gains in performance. Built in Yorkshire from BS1452 Grade 250 cast iron, it’s designed to meet the demands of high-performance road and competition builds.

Performance Specification:

  • 9 Stud Configuration: If 11 Stud is required, please select the option.

  • Water Bypass Installed: If you require this to be removed, please select the option.

Key Features:

  • Stage 3 Gas-Flowed Design: Optimised for enhanced airflow and combustion efficiency.

  • Larger Valves: 37mm inlet and 29mm exhaust for improved power and throttle response.

  • Durable Thick-Walled Ports: Ideal for custom performance modifications.

  • Advanced Cooling: Revised water jacket design for consistent high-performance operation.

  • Flexible Installation: Available in 9 or 11 stud configurations for various engine builds.

Experience power without compromise—perfect for competition or spirited driving enthusiasts.

Unlock Performance Potential – Order Yours Today!

Customise 12G940 Stage 3 1275cc Cylinder Head - New
NEW ST3 1275 Cylinder Head in RED (12G940-ST3)   + £2,195.00 £1,829.17

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1275cc Performance Cylinder Head for Classic Mini Engines
12G940 Stage 3 1275cc Cylinder Head - New

In stock

£2,195.00 £1,829.17

Summary

    Details

    Unlock the full potential of your Mini A-Series engine with the Mini Sport 1275cc Cylinder Head, Performance Model. Designed for enthusiasts and competition builds, this cylinder head combines modern engineering with advanced features to deliver maximum power and efficiency. Manufactured in Yorkshire from BS1452 Grade 250 cast iron, it’s built for those who demand the best.

    Performance Specification:

    • 9 Stud Configuration: If 11 Stud is required, please select the option.

    • Water Bypass Installed: If you require this to be removed, please select the option.

    Features, Advantages, Benefits (FAB):

    Stage 3 gas-flowed and ported design

    • Advantage: Optimised airflow for enhanced combustion and power output.

    • Benefit: Achieve noticeable gains in horsepower and torque, ideal for spirited driving or competition use.

    Larger valve sizes—37mm inlet and 29mm exhaust

    • Advantage: Increased air and fuel flow for maximum engine efficiency.

    • Benefit: Experience improved throttle response and overall engine performance.

    Thick-walled ports for durability and customisation

    • Advantage: Supports further modifications without compromising structural integrity.

    • Benefit: A cylinder head that grows with your performance goals.

    Revised water jacket design for advanced cooling

    • Advantage: Maintains optimal temperatures during high-performance driving.

    • Benefit: Consistent performance and reduced risk of overheating.

    Available in 9 or 11 stud configurations

    • Advantage: Accommodates a variety of engine builds and specifications.

    • Benefit: Flexible compatibility for both modified and competition engines.

    Precision engineering and testing

    • Advantage: Designed to withstand high pressures and temperatures during demanding conditions.

    • Benefit: Confidence in a product tested and proven to deliver reliable performance on and off the track.

    Why Choose the Performance Model?

    For those who want to push their Mini’s A-Series engine to its limits, the Performance model offers the ultimate upgrade. With a focus on power, efficiency, and durability, this head is perfect for competition or high-performance road builds.

    Order Options

    • Stud Format: Select between 9 or 11 stud configurations for optimal fitment.

    • Ease of Installation: Supplied fully machined and ready to install, making the upgrade process effortless.

    More Information

    More Information
    SKU 12G940-ST3_MAS