EPWI Product Lines

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D.U.I. Performance

D.U.I engineers and distributes the most advanced line of high-performance and racing ignition systems, their complete line of performance products includes, just to mention some, Firepower Ignition Kits, SOS Coils, Kill Switches, Ignition Coils, Rev Limiters, Dyna-Batts, Mini-VIPs, Alternators, Modules, LiveWires, and more...Stocked at all EPWI Locations.

Damper Doctor

Reconditioned harmonic balancers for most domestic & limited foreign applications. A good source for hard to find balancers at very affordable pricing. Stocked in all EPWI locations.

Dart Machinery

Dart and EPWI are the source for aftermarket cylinder heads and blocks. In both cast iron or aluminum, heads are available (bare or complete) with various runner & combustion chamber sizes. Blocks have various bore and deck hts. EPWI HEAD KITS use Dart castings with various combinations of valves, springs etc. Dart components are stocked in all EPWI locations.

Darton Sleeves

Since 1978 Darton International's business is the manufacture and delivery of cylinder sleeves, sometimes referred to as cylinder liners. Darton continues to advance in the performance racing industry market. Special order only.

Delta Cam Shaft

Reground camshafts and camshaft repair. Special order only.

Diamond Pistons

Manufacturer of performance pistons from replacement pistons to NHRA legal pistons. Available by special order only.


Supplier of Break-in oil, Hot Rod oil, Racing oil, Assembly lube, P.S., A.T. & M.T. fluids, Gear oil, Degreaser & Brake cleaner. Stocked in all EPWI locations.


With over 50 years in the business DuraBond seamless cam bearings are proudly featured in almost all EPWI kits. DB offers a full line of OEM replacement Cam and aux shaft bearings & hi performance cam bearings for most domestic engines.

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