Retaining Compound (Loctite 638) is still required to keep the stem in place.
Bronze Switchable Shaft Cylinder Head
Unlike other aluminum cylinder heads, the preinstalled pad is extremely durable. Machining quality on these cylinder heads surpass all other brands tested and the nozzle section is incredibly smooth which reduces nozzle O-ring wear and leads to the nozzle returning to battery very quickly for consistent fps in high rps builds.
5.41mm ±0.01mm OD stem For superior nozzle fitment - Begone wobbly nozzles and air leaks
Bronze (Proprietary heat treated alloy) stem Offers exceedingly low friction while having significantly more abrasion resistance than aluminum. It will not gall unlike aluminum and steel stems.
CNC Delrin main body For increased gearbox durability and reduced noise. Design ensures it will not crack under high loads unlike other Polymer Cylinder heads.
Integrated NBR pad For high abrasion resistance, low compression set and low deadzone. Pad acts as its own O-ring so no poorly fitting O-rings in sight. Very easy to replace in case you shred it as no glue is required for complete retention of the pad.
Tapered pad/stem Reduces air turbulence for improved pressure consistency and fps
The shaft is switchable with a GBB output valve key and sold separately for different set-up length such as SR25.
