Services and Parts




Your WD Parts Source




RLD Performance is an automotive engineering business. Your needs can be properly discussed so hard parts purchased are appropriate and competitive.  Automotive engineering services include engine modeling, cylinder head port design, flow analysis, digitizing and the CNC machining of cylinder heads.

RLD Performance can properly specify and upgrade your cylinder heads where mail order companies cannot.  Specialized camshaft design assistance is available for different engine types with considerations made to application, engine type, engine size, induction type, actual cylinder head flow data generated, exhaust type, transmission type, differential gearing and tire size. Experience provides a wide range of services for domestic, foreign and the exotic.  For more information on cylinder heads click (here for example)

We create some of the finest racing cylinder heads on the market.  We only sell fully developed stage III ports with part selections made by customer request. CNC machining matches or exceeds competitors flow data and the results are repeatable. Proven racing ports are available to supply most engine building needs.  A proprietary custom port for a customer can also be designed and replicated for future engine projects or for resale.

Custom valves as well as valve train component packages can be designed and made available to meet our customers performance needs. Custom camshaft grinds can be supplied at an affordable price.  More information can be found (here...). Upgrade racing spring kits for all applications are available to .875 lift.  All of our springs use the finest super clean wire and are electro-polished, shot-peened and stress relieved for increased endurance.  We offer titanium racing components.  More information can be found (here...).

RLD Performance is also a WD supplier for others like Mopar Performance Parts, GMPP Performance Parts and for aftermarket major companies like Accel, AFR, RHS, Manley, Ferrea, SI, Pioneer, Competition Cams, Lunati, Crane, Callies, Mahle Motorsports, Diamond Pistons, Wiseco Pistons, American Racing Headers and FAST. 

 As a manufacturer, RLD Performance welcomes wholesale suppliers interested in stocking and reselling our premium line of late model racing valves, camshafts and spring kits.





 RLD Performance, P.O. Box 890066, Temecula, CA 92589 (951) 676-4948, 9am-5pm Pacific Standard Time M-F, stan@rldperformance.com