STEM DIY Hot Air Engine Model Educational Toy Kit ($23.99)

As rare as a shiny Pokémon: $23.99 (Banggood). STEM DIY Hot Air Engine Model Educational Toy Kits.
Updated: 15-09-2025

Banggood

Warehouse in China.
Link: STEM DIY Hot Air Engine Model Educational Toy Kit
Price: $23.99

Additional Banggood coupons:
1. First page
2. Second page

Aliexpress

There’re some similar (or not) items on Aliexpress

Image	Product (link)	Price	Coupons
	5PCS Aluminum Alloy Bicycle Headset & Handlebar Stem Spacers Set of 5MM,10MM,20MM Fit 1 1/8\	$1.50	–
	MUQZI 1Pair Bike Handlebar Shim 25.4mm To 31.8mm 31.8mm To 35mm Aperture Adjust Adapter MTB Road Bicycle Bar Stem Reducer	$2.10	–
	25.4mm Mountain Bike Stem Aluminum Alloy Road Bike Stem MTB Bike Handlebar Stem for Most Bicycle Road Bike MTB BMX Fixie Gear	$3.07	–
	BUCKLOS Bicycle Stem Height Extender 100/120/135/180/210MM Aluminum Alloy Handlebar Rise Up Adapter 28.6mm Cycle Accessories	$4.27	–
	BUCKLOS Bicycle Sten Heighten Aluminum Alloy Bike Stem Extender Mountain Bike Handlebar Rise Bicycle Handlebar Riser	$4.35	–
	Bicycle Fork Stem Rise Up 90mm 115mm 135mm 150mm Bike Stem Height Extender Road Mountain Bike Handlebar Raise Adapte	$4.65	–
	ENLEE MTB Stem 31.8x45mm High-Strength Short Handlebar Stem Aluminum Alloy Bicycle Bridge Racing Downhill Bike / Road Bike Stem	$4.67	–
	ENLEE MTB Stem 31.8x45mm High-strength Short Handlebar Stem Aluminum Alloy Bicycle Bridge Racing Downhill Bike / Road Bike Stem	$4.68	–
	Aluminum Alloy Bicycle Stem Riser Adapter 1 1/8′ φ22.2mm 25.4mm 160mm Bike Stem Extender Bike Quill Stem Adapter	$5.23	–
	LUNJE Bicycle Handlebar Stem MTB Power Short 45mm Mountain Bike Bridge 25.4/31.8mm Pipe Cycling Stem Riser Table	$5.48	–
	Bicycle Stem Hollow Short Stem Aluminum alloy Mountain Bike 31.8*28.6*45mm Cycling Accessories	$5.66	–
	TANKE-MTB Road Bike Stem,CNC Aluminum Alloy Bicycle Parts,High-strength Short Handlebar,022 XC AM,25.4mm,28.6mm,31.8mmWith cover	$5.72	–
	SHIKRA MTB Stem Bicycle Power Mountain Road Bike Table 7 Degree Handlebar Stem 31.8mm 35/45/55/60//65/70/80/90/100/110MM Power	$5.97	–
	Handlebar Stem 7 Degree Length 50/60/70/80/90/100mm Ultralight Bicycle Stem MTB Road Bike 25.4/31.8mm Mountain Bike Stem	$5.99	–
	SHIKRA SK09 Stem Mtb Table Power Bicycle Road Short Power Mountain Bike Handlebar Stem 31.8*45MM 25.4*35MM Riser Handle Cycling	$5.99	–
	Bike Stem Fork Bicycle Handlebar Extension Riser Rise Up Bicycle Adapter Durable MTB Power Mountain Cycling Part 120mm	$6.10	–
	MTB Stem 31.8/25.4mmx35mm Mountain Bike Power Short Stem Support Road Mountain Bike Bridge Cycling Stem Bicycle Parts	$6.27	–
	MTB Stem 31.8/25.4mmx35mm Mountain Bike Power Short Stem Support Road Mountain Bike Bridge Cycling Stem Bicycle Parts	$6.30	–
	25.4mm Mountain Bike Stem Aluminum Alloy MTB Stem MTB Bike Handlebar Stem for Most Bicycle Fixed Gear Road Bike MTB	$6.58	–
	CNC Ultralight Bicycle Stem 31.8x35mm MTB Road Bike Riser Silver Aluminum Mountain Bike Handlebar Stem	$7.60	–
	RIDERACE Bicycle Stem Road Mountain MTB Bike Table 85/100/120mm Rod Adjustable Front Fork Stem for 31.8mm Handlebar Power Parts	$8.40	–
	Bicycle Handlebar Stem Height Extender 1-1/8\	$8.46	–
	WAKE Ultralight Bike Stem 25 35 Degree 31.8mm MTB Power 60/70/80/90/100/110mm Mountain Road Bicycle Handlebar Stem Bicycle Part	$8.51	–
	RIDERACE Bicycle Stem 30 Degree 50mm Short MTB Mountain Bike Riser Road Cycling 28.6 Front Fork Stem for 31.8mm Handlebar Parts	$8.58	–
	KRSEC SR35 Mountain Bike Power Stem 35mm Length 0 Degrees Road Bike Stem 31.8mm for 31.8mm Bicycle Handlebar Mtb Stem	$8.61	–
	SHIKRA New Mountain Bike Power Stem 35mm Length 0 Degrees Road Bike Stem 31.8mm for 31.8mm Bicycle Handlebar Mtb Stem	$8.61	–
	TOSEEK Ultralight Aluminum Bicycle Stem 7 Degrees Mtb mountain bike Stem 31.8 x 45/55/60/65/70/80/90/100/110mm Bike Accessories	$8.76	–
	HASSNS HA31 Mountain Bike Stem 35mm Road Bicycle Short Power Mtb Power Stem Rod Handlebar Table Adjustable Riser 31 8 Cycling	$8.98	–
	Bike Stem 35mm Power Bicycle CNC Mtb Bicycle Bridge 31 8mm Bike Handlebar Stem Cycling Parts Aluminium Alloy Stem Riser	$9.16	–
	31.8 Stem Bike Stem Aluminum Alloy Short Handlebar Stem MTB Bike Handlebar Stem for Most Bicycle Road Bike MTB BMX Fixie Gear	$9.80	–
	TANKE MTB Power Stem Road Bike Mountain Bicycle Bridge Short Power 35mm Rod Handlebar Table Adjustable Stem Riser 31.8 Cycling	$9.91	–
	25.4mm Bike Stem Short Handlebar Stem Aluminum Alloy MTB Stem for Most Bicycle Fixed Gear Road Bike MTB	$10.35	–
	TOSEEK 7 Degree Bicycle Stem 28.6mm 31.8mm MTB Road Bike Table 35-110mm Negative Bicycle Power Lightweight Mountain Bike Stem	$10.43	–
	25.4mm Mountain Bike Stem Aluminum Alloy Road Bike Stem MTB Bike Handlebar Stem for Most Bicycle Fixed Gear Road Bike MTB	$10.64	–
	25.4mm Mountain Bike Stem Aluminum Alloy MTB Stem Short Handlebar Stem for Most Bicycle Road Bike MTB BMX Fixie Gear	$10.79	–
	Wake Mtb Power Stem Road Bike Mountain Bicycle Bridge Short Power 31.8mm 35mm Road Handlebar Table Adjustable Stem Riser Cycling	$11.30	–
	25.4mm Short Handlebar Stem Aluminum Alloy Road Bike Stem MTB Bike Handlebar Stem for Most Bicycle Road Bike MTB BMX Fixie Gear	$11.33	–
	31.8 Stem Bike Stem Aluminum Alloy MTB Stem MTB Bike Handlebar Stem for Most Bicycle Road Bike MTB BMX Fixie Gear	$12.09	–
	25.4mm Short Handlebar Stem Aluminum Alloy Road Bike Stem MTB Bike Handlebar Stem for Most Bicycle Road Bike MTB BMX Fixie Gear	$12.09	–
	HASSNS XD48 MTB Stem Mountain Bike Stem Table Short Power Road Bicycle Bridge Adjustable Riser Handlebar Power 28.6*31.8*35MM	$13.65	–
	HASSNS DH40 Mountain Bike Stem Road Bicycle Short Power Handlebar Table Mtb Power 28.6*31.8/35*40MM Stem Riser Cycling Bridge	$14.64	–
	UNO Bike Stem Ultralight Road Bike Stem Fork-7 Degree 28.6mm 31.8mm 70/80/90/100/110/120mm Mountain MTB Bicycle Kalloy	$14.67	–
	EVOSID Mtb Power Stem Road Bike Mountain Bicycle Bridge Short Power 35mm Rod Handlebar Table Adjustable Stem Riser 31 8 Cycling	$15.93	–
	Toseek Stem MTB Carbon + Aluminum Mtb Handlebar Stem Bike Power 31 8mm Bicycle Handlebar Table 10 17 25 35 Degree Stem Bike Part	$16.22	–
	GUSTAVO Mtb Power Bicycle Handlebar Stem Road Mountain Bike Table 60/80/93/100mm Rod Adjustable Stem 31.8 25.4 Riser	$16.88	–
	SHIKRA SK01 Mtb Power Bicycle Handlebar Stem Road Mountain Bike Table 90/110/145mm Rod Adjustable Stem 31.8 25.4 Riser Negative	$17.70	–
	Mountain Bike Short Stem CNC MTB Stem 6061-T6 Aluminum Alloy 28.6×31.8mm 128.6g Bicycle Accessories Parts Cycling	$24.56	–
	Shock Absorber Bicycle Stem Road Mountain 100/140mm Rod Front Fork Riser for 31.8mm Handlebar Power Parts	$29.77	–
	MTB ST1 Stem 31.8MM 35MM Suitable for street bikes in all terrain mountainous areasaluminiu stem mountain bike parts CNC7075/T6	$48.85	–

Click here to search by yourself. Here are coupons that you can use.

Price history and price alert

Here is price history (for all/most countries) for STEM DIY Hot Air Engine Model Educational Toy Kit. The lowest price was: $17.99.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).
Price Alert