Semroc Flying Model Rocket Kit Mars Lander™ WKV-54 | WSEM-KV-54 | Semroc

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Semroc Flying Model Rocket Kit Micro(MX) Mars Lander™   KMX-02

Skill Level 3 Advanced

Downscale of the Classic Mars Lander

High Quality 3D Printed Nose Cone

Colorful Decals

Laser Cut Parts

Construction Jig

Streamer Recovery

Body Diameter 1.18"

Length 3.9"

Fin Span 4.6"  

Net Weight 0.42oz   

Uses Micro Maxx Motor

Approx. Altitude 50'

Made in the USA




About the MX Mars Lander

The MX Mars Lander is a Downscale of the Estes Mars Lander that was introduced in 1969. It was designed by Wayne Kellner. The full size Mars Lander had operating Landing gear. The Mars Lander was released as Cat. No. K-42 and had an introductory price of $4.75.

Jay Berry was inspired to engineer the MX Mars Lander to utilize the Micro Maxx brand of engines. These engines allow MX rockets to be flown in a smaller flying field for greater recover-ability.

The plan was to keep the kit simple, while Phil Queen was creating the instructions and building and flying this tiny kit he decided there was room for more detail. A big thanks goes out to Mark McBride for going so far as creating an outstanding 3D printed nose cone that is light enough to allow a tiny kit like this to fly.


About Semroc

Semroc Astronautics Corporation was started by Carl McLawhorn in his college dorm at North Carolina State University in November, 1967. Convincing a small group of investors in his home town of Ayden, North Carolina to invest in a small corporation, the company was re-incorporated as Semroc Astronautics Corporation on December 31, 1969.

Semroc produced a full line of model rocket kits and motors. At its peak, Semroc had twenty-five full time employees working at two facilities. One was for research and development, printing, shipping, and administration. The other was outside of town and handled all production and model rocket motor

manufacturing. For several years, Semroc successfully sold model rocket kits, supplies, and motors by mail-order and in hobby shops. In early 1971, Semroc became insolvent and had to close its doors.

After 31 years of dreams and preparations, Semroc Astronautics Corporation was reincorporated on April 2, 2002 with a strong commitment to putting the fun back into model rocketry. Many years of excellent service to the rocketry community passed by until sadly, on August 11 2013, Carl passed away and left a great void in the hearts of many rocketeers. He is forever in our hearts and minds.

In February of 2015, Semroc was sold to eRockets and moved to Dayton, Ohio where it resides today. It is our goal to continue the level of service and dedication to the hobby Carl and his family were so well known for. We strive to serve you, our customers, to the best of our abilities as we carry the vision of Carl McLawhorn boldly into the future.


Semroc Flying Model Rocket Kit Mars Lander™ KV-54

Skill Level 4

Futuristic Planetary Manned Vehicle

1969 Retro Reproduction

Working Shock Absorbing Gear

Precision Turned Balsa Nose Cone

Laser-Cut Fins and Body Parts

Embossed Wraps

Colorful Water Slide Decals

Parachute Recovery

Body Diameter 3.744" (9.5cm)  

Length 12.4" (31.5cm)  

Fin Span 13.5" (34.3cm)  

Net Weight 4.1oz (116.3g)  

Made in the USA 

Engine Approx. Altitude

C6-3     300'

D10-3   400'

D21-4   500'


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


Wood Glue, Model Cement or CA(Super Glue)


Masking Tape

Finishing Supplies like:

Wood Filler



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

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