EBC · New
EBC 77-81 Porsche 928 4.5L USR Slotted Front Rotors
MPN USR109 · Store SKU ebcUSR109
Supplier stock checked 11/7/2026, 4:35:30 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Choose from EBC plain non drilled rotors or sport rotors in two choices - wide aperture 3GD series for cooler running or new SUPER SILENT Ultimax USR slotted series. All EBC rotors are British made and are precision machined in the UK. Rotors are made from high quality grey iron to exacting standards and undergo extensive testing and rigorous quality control.Slotted rotors can significantly improve brake performance and longevity when used with a matching high friction pad set. Having sold hundreds of thousands of brake kits EBC Brakes feel confident their approach is as perfect as it gets. USR Series Sport Slotted Rotor Set 89.8mm Center Hole Dia. For FMSI Pad No. D251 60.7mm Height 5 Bolt Holes 20.5mm Thick 282mm Dia. Vented Front
Manufacturer fitment & guides
Check USR109 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
