Brembo brake conversion
Explore GIR's overview of front and rear Brembo conversions, including wheel clearance, hubs, rotors, mounting hardware and brake lines.
Subaru Guides & Technical Advice
Got It Rex / Workshop knowledge
Planning a Subaru upgrade, getting ready for a track day or looking for fitting instructions? Explore GIR's guides to understand the parts, preparation and compatibility questions involved in your next job.
Brake conversions
Compare the main considerations before planning a brake conversion.
Subaru 4-pot front brake conversion
Read about the components and wheel-clearance considerations involved in moving from sliding front calipers to Subaru 4-pot calipers.
Subaru 2-pot rear caliper conversion
An overview of the calipers, discs, adaptor brackets and hub considerations discussed in GIR's rear brake conversion guide.
Gearboxes & differentials
Understand how the supporting parts fit into a drivetrain conversion.
R160 to R180 differential conversion
Compare the R160 and R180 arrangements and the driveshaft, hub, ratio and flange questions to consider before a conversion.
Subaru 6-speed gearbox conversion
GIR's guide to planning an STI-style 6MT conversion, covering gearbox identification, clutch components, tailshafts, crossmembers and differential matching.
Track days & tuning
Start with preparation, then understand the needs of your particular car.
Your first track day
A starting point for finding an event and preparing your car. Confirm current licence, equipment and entry requirements with your chosen organiser.
Dyno tuning: advice from GIR
Read GIR's introduction to tuning, ECU options and why a modified Subaru's setup needs to be considered as a whole.
Planning a service?
Compare Subaru service kits, including the configurable GIR Motul Premium kit, or browse Motul oils and fluids. Choose products to suit your engine, required specifications and use.
For help preparing a track car, explore GIR's racecar preparation services.
GIR product instructions
Looking for instructions for a GIR part you already own?
GIR product instruction manuals
Find the available GIR fitting guides and installation contact details. If your product's instructions are not listed, contact GIR before starting.
Not sure what suits your Subaru?
Guides are a starting point. Compatibility depends on your exact vehicle and existing modifications. Brake and drivetrain work should be assessed and carried out by an appropriately qualified technician.
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