Amazon.com: Goshfun 32Pcs 10-Kinds MOC Pneumatic Parts Bricks with Air Pump Push Rod Switch Piston Air Pipe, DIY Small Particle Stem Building Blocks Toy Set Compatible with Lego, Random Color of Air
LEGO MOC 1 Cylinder Lego Pneumatic Engine - Modified (High RPM) by Green Gecko | Rebrickable - Build with LEGO
Nico71 - Lego Switchless Pneumatic engine mk2. With stacked 4 valves instead of side by side, one cylinder and two speeds gearbox. Expected to me mounted soon in a two wheels creation
Vertical Pneumatic Engine – BuildaMOC
Pro Instructions - MK2 V8 Lego Pneumatic Engine 2200 RPM – Green Gecko Workshop
LEGO MOC Lego Pneumatic Launch Engine by Hans56 | Rebrickable - Build with LEGO