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YXXX" kits include heavy-duty airframe and motor mount tubes
Starting with the PAR-60 (60" diameter)
sled with mounts
This style weighs 28
4 in / 19 mm Diameter 0
010018 Estes B4-2 Engines - 18mm PS2 YXXX" kits include heavy-duty airframe010018 Estes B4 2 Engines 18mm The Estes B4 2 is a dependable single stage model rocket engine built for consistent, enjoyable flights in lightweight rockets. Designed to deliver steady, usable thrust for rockets under 4 ounces, this engine gives hobbyists reliable lift and smooth flight profiles that make launching simple and satisfying. Whether you are teaching a new rocketeer, flying at a club launch, or enjoying backyard hobby flights, the B4 2
US$ 300.00
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