Estes Flying Model Rocket Kit K-25 Astron Alpha EST 1221
Celebrate 60 years of model rocketry history with the K-25 Astron Alpha™. This special anniversary edition recreates the original Alpha kit that inspired generations of builders, featuring authentic details and vintage design elements from the early days of Estes.
With its balsa nose cone, angled-tip fins, and classic red and white color scheme, the Astron Alpha™ is a faithful tribute to the rocket that started it all. For a limited time, every purchase also includes a FREE 2025 Christmas Ornament while supplies last. Build it, launch it, and enjoy a bonus keepsake that celebrates this milestone year.
- SKILL LEVEL: Intermediate
- RECOMMENDED ENGINES: A8-3, B6-4, C6-5, C6-7
- PROJECTED ALTITUDE: 1500 ft. (457 m)
The K-25 Astron Alpha™ marks the 60th anniversary of one of the most iconic model rockets ever made. To honor the original design, Estes has recreated this timeless kit with incredible attention to detail. The result is a rocket that looks and feels like the same one that launched the model rocketry movement back in the 1960s.
Authentic Vintage Details
Every element of the K-25 Astron Alpha™ has been carefully restored to reflect the original build experience. The nose cone is crafted from genuine balsa wood and shaped to match the original profile. The laser-cut balsa fins include angled tips not seen in modern versions for decades. Even the engine mount has been faithfully reproduced with card stock centering rings and an original-style metal hook. Every piece pays homage to the roots of the hobby.
Beautiful, Reliable Performance
This special edition may be a vintage design, but it performs like a champion. The Astron Alpha™ soars up to 1,500 feet on standard 18 mm Estes engines and returns safely under its 12-inch parachute. The clean, simple lines and classic red and white color scheme give it a striking look that stands out on display or at the launch pad.
What You’ll Need
To complete your build and prepare for flight, you’ll need basic modeling supplies such as glue, hobby tools, and finishing materials (not included). For launch, use a Porta-Pad® II Launch Pad, Electron Beam® Launch Controller, recovery wadding, and your choice of recommended engines: A8-3, B6-4, C6-5, or C6-7.
A Rocket That Connects Generations
For those who built the original and for newcomers discovering the magic of model rocketry, the K-25 Astron Alpha™ bridges the gap between generations. Build it, paint it, and take part in 60 years of history. Every kit includes a commemorative 60th Anniversary sticker to celebrate this milestone in Estes heritage.
Length - 12.25"(31.1cm)
Diameter - 0.98"(24.9mm)
Estimated Weight - 0.8oz(22.7g)
Projected Max Altitude - 1500'(457m)
12" Parachute Recovery
1/8" Launch Lug
Skill Level 2 Intermediate
Laser cut Balsa Fins
Balsa Nose Cone
Needed to Build (sold separately) Hobby Knife, Fine Sandpaper, Sanding Block, Scissors, Yellow Glue, Ruler, Soft Lead Pencil, White Primer, Red & White Paint, Clear Coat (optional)
Recommended Engines : A8-3, B6-4, C6-5, C6-7
Quest Q-Jet: A3-4FJ, B4-4FJ, B6-4W, C12-6FJ, C16-6W, D20-8W
Model Rocket Kits are rated by Skill Level
1 Beginner
2 Intermediate
3 Advanced
4 Expert
5 Master
If you are just starting in the hobby start at the beginner level and move up from there at your own pace.
What is needed to build and fly
All model rockets come in kit form that require assembly. The materials are primarily cardboard tubes, balsa or plastic fins and nose cone. Materials will vary by model and are typically specified in the description of each kit.
Additional supplies will be necessary to build and finish your model rocket kit and may include:
Scissors, Hobby Knife
Ruler
Wood Glue, Model Cement or CA(Super Glue)
Sandpaper
Masking Tape
Finishing Supplies like:
Wood Filler
Sealer/Primer
Paint
Launching Equipment and Supplies like:
Recovery wadding
Launch Pad
Launch Controller
Power supply
Model Rocket Motors and Igniters
A safe place to fly using guidelines from the National Association of Rocketry Safety Code
