// About
Graham Martin Racing
GMR designs highly engineered performance induction — complete ITB kits and carbon-composite intake systems — flow-developed in Northampton and made in the UK. Every part is engineered around your engine, not adapted from a shelf.
// What we do
Induction, engineered as a system
Complete ITB kits
Bores, stacks, linkage and filtration sized to your displacement, head and target RPM — designed and supplied as one matched system, not a box of parts.
Carbon-composite induction
Up to 50% lighter than aluminium, with hollow carbon walls that keep engine-bay heat out of your intake charge — denser air, more power.
Engines & special projects
Bespoke engine and component manufacture, calibration, reverse engineering and low-volume production for motorsport and OEM.
// How we make it
The flow path the engineer designed — not the one the tooling allowed
Designed for airflow
Compound curves, true radiused entries and section changes exactly where the airflow wants them — free of the compromises moulds and castings force.
Flow-developed in-house
Every design is validated for real airflow before it's made, so the part on your engine performs the way the numbers say it should.
Direct Digital Manufacturing
Built to order on our DDM line in Northampton — production-ready parts, each with its own part number, made exactly to spec.