Spring Seat / Shim (Dual Springs) The LC Engineering 5VZ/1GR Pro Dual Valve Spring Seats are designed to be used with the Pro Dual Valve Springs. NOTE: Sold individually. This product should not be used in a manner that violates Federal EPA Laws...

Spring Seat Shim (Single Spring / .025″) Hardened Valve Spring Shims for 2RZ and 3RZ Street Performer Valve Springs. NOTE: Sold individually. Contact our Tech Support Line for further information at 928-575-2174. Note: Images are for...

Spring Seat Shim Set (Single Spring / .025″) Hardened Valve Spring Shims for 2RZ and 3RZ with Single Street Performer Valve Springs. NOTE: Sold as a set of (16). Contact our Tech Support Line for further information at 928-575-2174...

Pro Dual Valve Springs The Pro Dual Valve Springs are a "must-have" upgrade when running cam lift over .455" or when sustaining a constant 5,000rpm or higher. With 100lbs of seat pressure and open pressure of 210lbs (at .500" lift) they will work...

Street Performer Valve Springs The proper set of matched valve train components will eliminate most valve train problems. The LC Engineering Street Performer Valve Springs fit in the stock spring pockets and install with all of the stock valve train...

Street Performer Valve Springs These Street Performer valve springs are an excellent choice for a mildly built engine running naturally aspirated or low boost (0-10lbs). We recommend these for use with our Pro series or Stage 2 Camshafts steps. They...

Dual Spring & Titanium Retainer Kit LC Engineering has taken the guesswork out of choosing the right parts for your cylinder head! We have created a spring & retainer kit that comes with all the parts needed to upgrade your 20R/22R/RE/RET cylinder...

Dual Spring & Chromoly Retainer Kit LC Engineering has taken the guesswork out of choosing the right parts for your cylinder head! We have created a spring & retainer kit that comes with all the parts needed to upgrade your 20R/22R/RE/RET...

Street Performer Valve Springs These Street Performer valve springs are an excellent choice for a mildly built engine running naturally aspirated or low boost (0-10lbs). We recommend these for use with our Pro series or Stage 2 Camshafts steps. They...

Pro HD Dual Valve Springs (High RPM / High Boost) If you're building a 2.4L 2RZ-FE or a 2.7L 3RZ-FE these Pro Dual Valve Springs are a "must-have" upgrade when running bigger lift cams and higher RPM's. With 100lbs of seat pressure at a 1.400" install...

OE Valve Springs These are OE Valve Springs to get your spring rate back to factory specifications. If you are looking for an upgraded spring or running anything other than the factory cams, reference Part #: 1023238 for our Street Performer Valve...

Valve Springs (Street Performer) The Street Performer Springs will control your valves up to 5,500 RPM, with a valve lift of .450". NOTE: The proper set of matched valve train components will eliminate most valve train problems. The LC Engineering...