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Price is for each. Choose your valve stem size. VS-N5.5E fits Nissan 5.5mm stem valves common in these motors:SR20VE P12 (Fits intake and exhaust side) VS-N6E fits Nissan 6mm stem valves common in these motors:SR20DESR20VE P11RB20/RB25All VQsCA18VG30VK56VR38 VS-N7E fits Nissan 7mm stem valves common in these motors:SR20DETKA24DE (Fits intake and exhaust side)RB26TB48 (Fits intake and exhaust side) ...

Price is for each. Fits Nissan 6mm stem valves common in these motors:SR20DETSR20VE P11All RBsAll VQsCA18VG30VK56VR38

Supertech retainers are manufactured with high quality military certified Titanium alloy, and are CNC machined for a tight fit. Supertech's high quality retainers are among the best in the industry. These fit all SR20s except the P12 8H6 head with 5.5mm valve stems.

These fit all SR20 heads.  Configuration refers to the stem diameter of the valve.  All SR20DET heads use 7mm. If using an SR20DET head with aftermarket 6mm valves, select 7mm to 6mm Conversion. SR20DE and SR20VE (1N5) use 6mm.  If using an SR20VE 8H6 head with OEM valves or aftermarket 5.5mm valves, select 5.5mm. Sold as each. Supertech Valve Guides are precision-machined from high quality Manganese Bronze material. Supertech Valve Guides are designed to be used in...

All Supertech valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance & durability at high rpms. Using high quality steel alloy also provides the added benefit of better structural memory for all of valve springs.Supertech dual valve springs are designed and manufactured to reduce valvetrain harmonics, increase durability, and provide an increase in performance for your high performance racing engine.

Send us your rocker arms and we will machine them for dual guides.  This service is for a set of 8 rockers. If you already have extra guides that will replace the shim, you can also send them in to get ground to match the respective shim they are replacing.  Just select the option.  Please include the shim and replacement guide with the rocker and label the position on the bag. If you need guides, select the option to include new OEM guides and we will grind them...

OEM Nissan Rocker Arm.You have the option for us to grind it for dual guide conversion.

Made from 1/2" 6061-T6 and sized at 24" x 24", this adapter plate gives you the correct pattern to mount a GM bell housing to your SR20 RWD block.  This plate also stands the engine straight up instead of it's normal lean to the exhaust side.  This is used in chassis drag cars.  You will have to trim the outside profile to match your chassis.  Comes with engine bolts.

Mazworx SR20 91mm Stroker kit is designed to use with turbo setups. This kit features the 91mm billet crankshaft, your choice of rods (depending on hp level) and CP Pistons designed to your specs.This crank requires 1/2-20 flywheel bolts.  So machining to your flywheel is required.

284°/290° | 12.50mm/12.10mm Valve Lift284°/290° racing cams to suit well built competition engines with ported head and bigger valves. Turbo size 67mm+. Fuel type E85 or methanol. Profiles can be used in RWD SR20DET engines with solid lifter conversion.

When installing a FWD head on a RWD block, the FWD head does not have the extra oil drain in the back.  This plug blocks off the the drain hole in the block.  Includes orings.