D Series ZC

Our SpeedFactory 4 Bar MAP sensors use state of the art bipolar op amp circuitry with thin film resistor networks built into each micro chip. Press...

Introducing SpeedFactory Racing’s precision cast 70mm Throttle Body for Honda B, D, F, and H series - bolt-on increased airflow, throttle response...

The SpeedFactory Racing Aluminium Tucked Radiator is a must have when trying to utilize precious engine bay space. It is not only more efficient t...

The use of an OBD-1 (92-95) ECU is needed for proper tuning of your high-performance engine. The SpeedFactory Racing ECU Conversion Harnesses allow...

SpeedFactory Forged Steel No-Notch Long Rods - D16 Vitara Spec Proudly introducing the new SpeedFactory Racing D16 Vitara Spec No-Notch Long Connec...

Our Supertech Block Guards are meticulously designed and tested in many engines. As a result, we offer a product that will provide support to high...

Supertech Dual Valve Spring & Retainer Kit - D Series All Supertech valve springs are made with premium Superclean Chrome Silicon Vanadium Ste...

Replace your stock keepers when you are upgrading your valve train with these Supertech machined and hardened keepers. KPR-5.5/7A-ST 5.5mm Valve L...

Supertech 5.5mm viton valve stem seals reduced outer diameter valve seals are perfect for those that are using dual valve springs or may otherwise...

Hundred Proof Hardware™ by MPC Stainless Steel Transmission Hardware Kit Get rid of those old, corroded factory bolts! MPC Kits are sealed and wi...