Umarex Zelos Side Mount Plenum 17cc/35cc Zelos Plenum:35cc Side mount gauge (facing) The plenum will move the

The plenum will move the main air reservoir 45mm forward so you would need clearance

They are also stackable as well

I have only test fitted this for the tactical tube version

Make sure the HP valve sit flush to allow the magazine to fit

The brass/tungsten hammer weight is needed to open the valve when using higher reg pressure or wanting longer valve dwell time

Umarex Zelos Side Mount Plenum 17cc/35cc Zelos Plenum:35cc Side mount gauge (facing) The plenum will move the17 35cc side rear mount gauge facing plenum designed for the Zelos. With this added you can expect increase of 20 40fps depending on caliber, tune, and projectile. Itll come with the necessary washer seal, shims, and orings needed for the installation. You would use your factory gauge. They are cnc machined from 6061 T6 and blk anodized. Made in USA