Stock: In Stock
ENJOMOR Gamma Stirling Helicopter Model Kit is a buildable kinetic helicopter display whose Gamma-type Stirling mechanism drives the main and tail rot..
-51%
$166.59 $341.51
Stock: In Stock
ENJOMOR Hero’s Piston Steam Engine Kit with Boiler is a buildable full-metal piston engine platform offered as a boiler set, generator display or comp..
-68%
$127.39 $401.78
Stock: In Stock
SEMTO / TOYAN FS-L200AC 7cc Inline-2 Nitro Engine Kit is the current air-cooled 7cc SOHC inline-two kit that replaces the discontinued water-cooled FS..
-51%
$195.99 $401.78
Stock: In Stock
TECHING Classic Car Engine & Chassis Assembly Kit 310+PCS is a 310-plus-piece metal assembly project combining a visible single-cylinder mechanism wit..
-51%
$431.19 $883.94
Stock: In Stock
TECHING DM122 1:14 Mini Turbofan Engine Kit 170+PCS is a compact 1:14 electric assembly model with more than 170 parts, visible fan/compressor/turbine..
-51%
$146.99 $301.33
Stock: In Stock
V-Twin Steam Engine Science Experiment Kit 43PCS is an accessible 43-piece assembly that demonstrates boiler heat, steam delivery, twin-piston motion,..
-51%
$29.39 $60.25
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Mechanical STEM engine kits reveal how assemblies work by asking the builder to create the mechanism from precision parts. This collection connects piston engines, steam demonstrations, vehicle drivetrains and electric turbofan models through observable motion rather than hidden electronics.
Compare part count, assembly time, powered function and age guidance. Product pages distinguish educational simulations from fuel-burning or live-steam equipment and link to the relevant specialist category.