Toyota GT86/Subaru BRZ FA20 Fully Forged Build

Ready to go all-in on strength and reliability? Our Fully Forged FA20 Build is built for serious power and long-term durability — whether you're planning big boost or just want the strongest foundation possible. This package replaces all major internals, including Wossner forged pistons, and is ideal for high-performance turbocharged or supercharged road cars and track builds.

Starting from £6,000, it includes premium components, full machining, all fluids and labour — giving you confidence no matter how hard you drive.

What’s Included in the Fully Forged Build?

  • Wossner Forged Pistons: Stronger and lower compression (9.5:1) pistons built to handle high boost and heat.
  • Skunk2 Alpha Conrods: Forged rods designed for high power and reliability.
  • ACL Race Bearings: Tough, high-performance bearings to support higher loads and RPM.
  • Kelford Valve Springs: Uprated springs for reliable high-RPM operation.
  • ARP Head Stud Kit: Prevents head lift under boost with increased clamping force.
  • Cosworth Head Gaskets: Seals built for turbocharged and high-compression setups.
  • Low-Temp Thermostat: Helps keep temps in check during hard driving.
  • Killer B Oil Pickup: Reduces risk of oil starvation under cornering loads.
  • ARG Baffle Plate: Keeps oil where it needs to be under load and at the track.
  • Full Gasket and Seal Kit: New seals throughout for leak-free operation.
  • Full Machining: Includes cylinder boring, block decking and head skimming
  • Piston Rings & Bore Hone: Fresh bores and rings for perfect compression.
  • Ultrasonic Carbon Clean: Restores intake and exhaust flow.
  • All Fluids, Oil, and Filter: Quality lubricants and filters to protect your new engine from day one.

Why Choose a Fully Forged Build?

  • Built for Power: Ready for big boost, aggressive cams, and hard track use.
  • Maximum Reliability: Every internal component upgraded for strength and longevity.
  • Lower Compression Ratio: 9.5:1 pistons give more headroom for tuning and boost.
  • Future-Proof: No weak links — ready for whatever you throw at it.

Recommended Add-Ons While the Engine’s Out

  • Clutch and Flywheel: Upgrade for torque handling and better rev response.
  • Oil Cooler: Keep temps under control during hard driving.
  • Engine Mounts: Stiffen things up for better feel and response.
  • Performance cams: increase performance with new cams
  • Uprated oil pump: For greater piece of mind add-on a performance high flow oil pump

Get Started

Our Fully Forged FA20 Build with Wossner pistons gives you the strongest base for your power goals. Whether you're aiming for 400+ bhp or just want bulletproof reliability, this is the build that can take it.

Price: From £6,000, including parts, labour, machining, assembly and fitting. Additional cost will apply if the engine is knocking already.

Contact us today to plan your build and unlock your FA20’s full potential.