Estes C-Class Model Rocket Engines

Shop verified Estes C-class model rocket engines by exact C6 or C11 designation, delay code, diameter, package type, and manufacturer part number. The page also includes verified mixed-class engine packs when they contain C motors.

Do not choose by impulse letter alone

C-class motors can differ in average thrust, delay, physical diameter, and intended use. The correct choice comes from the exact rocket's manufacturer-approved motor list—not from the letter C by itself. Booster motors, short-delay motors, and longer-delay motors perform different jobs in the flight sequence.

Check C6 versus C11 requirements

Review the motor diameter and full designation shown on each product page. C6 and C11 products should not be substituted without explicit approval for the rocket and configuration. Match the exact package and part number before ordering.

See all Estes model rocket engines, browse individual rocket kits, or compare complete launch sets. Shipping restrictions may apply to motor orders.