Please wait… 
Please wait while we process your order,
do not press the back button… 
Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram

Gearbox Parts

Choose specific product type
About Gearbox Parts

High-Quality Gearbox Parts for Smooth, Precise and Long-Lasting Transmission Performance

Gearbox parts are at the heart of your vehicle’s transmission system, ensuring power is transferred smoothly from the engine to the wheels. These components—including gears, synchros, bearings, selector mechanisms, seals and shafts—must operate with precision to provide crisp gear changes, reduced drivetrain noise and optimal driving performance. Whether you’re rebuilding a worn transmission, upgrading for performance, or repairing specific issues, choosing the right gearbox parts is essential for long-term reliability.

What Gearbox Parts Do

Transmission components work together to manage torque delivery and gear selection.

Their key roles include:

  • Enabling smooth gear shifting through synchroniser assemblies
  • Transferring power efficiently from engine to drivetrain
  • Maintaining correct gear alignment via bearings, shafts and selectors
  • Reducing friction and heat with precision-machined internal components
  • Ensuring responsive and reliable gear engagement under all driving conditions
  • Supporting high-load and performance driving with upgraded materials and tolerances

When these parts are in good condition, the gearbox operates quietly, engages gears cleanly and delivers consistent performance.

Why Gearbox Parts Commonly Fail

Gearboxes experience constant mechanical load, friction and temperature cycles. Over time, internal components can weaken or wear out due to:

  • Synchro ring wear causing notchy or difficult gear engagement
  • Bearing failure leading to whining, vibration or misalignment
  • Gear tooth damage from aggressive shifting or lubrication issues
  • Worn selector forks or linkages affecting precision and feel
  • Oil contamination accelerating wear on bearings and synchros
  • Leaking seals causing low lubrication levels
  • High-mileage fatigue in shafts, pins and internal hardware

Even small failures can quickly escalate into major transmission issues if not addressed in time.

Why You Should Replace Worn Transmission Components

Replacing ageing or damaged gearbox parts with high-quality, precision-engineered alternatives designed to match original performance standards ensures your transmission remains smooth, durable and reliable.

Benefits of replacing worn parts include:

  • Restored smooth gear changes and reduced notching
  • Improved drivetrain efficiency and power delivery
  • Reduced internal wear and noise
  • Enhanced lifespan of other transmission components
  • Prevention of costly gearbox failure
  • Confidence in both daily driving and performance applications

A refreshed gearbox not only improves driving enjoyment but also protects the significant investment in your vehicle’s drivetrain.

Popular Models