Estes 072657 - Pro Series II™ 2" to 2.5" Plastic Tube Adapter-0
    Estes Rockets

    Pro Series II™ 2" to 2.5" Plastic Tube Adapter

    SKU: 072657

    $5.99

    Give your Pro Series II rockets a clean, factory-fit upgrade with the 2" to 2.5" Plastic Tube Adapter. This blow-mold plastic adapter lets you convert a 2.0 inch OD tube to a 2.5 inch OD body tube quickly and securely—perfect for repairs, customization, or building a one-of-a-kind rocket.

    Designed for use in the Pro Series II 9701 Ventris and 9703 Argent, this adapter also opens creative possibilities for your own designs. Lightweight, durable, and easy to install, it’s the simple part that makes big design changes possible.

    • Compatibility: Fits Pro Series II 9701 Ventris and 9703 Argent and other rockets that use 2.5" body tubes.
    • Durable Blow-Mold Construction: Strong, lightweight plastic resists impact and repeated launches.
    • Easy Installation: Snaps or glues into place quickly for fast modifications or repairs.
    • Design Flexibility: Convert tube sizes without cutting or complex routines—ideal for custom builds.
    • Reusable: Engineered to hold up through multiple flights and handling sessions.

    Overview

    The 2" to 2.5" Plastic Tube Adapter gives hobbyists an easy, reliable way to expand or repair Pro Series II rockets. Whether you’re restoring a Ventris or Argent or experimenting with custom airframe ideas, this adapter provides a secure transition between tube sizes without complicated mods.

    Precision Fit for Pro Series II Rockets

    Manufactured from blow-molded plastic, the adapter matches the contours and tolerances expected in Pro Series II parts. That means a snug, centered fit that keeps your airframe aligned for stable flights and predictable recovery.

    Built for Durability and Repeat Use

    The lightweight plastic construction resists cracking and impact, so the adapter stands up to regular handling and repeated launches. Its resilience makes it a dependable choice for both backyard rocketeers and display restorations.

    Fast, Simple Modifications and Repairs

    Install with adhesive or press-fit depending on your build—no advanced tooling required. Use it to swap components, adapt older parts to modern mounts, or prototype a new rocket concept fast, then fly it with confidence.

    Estes 072657 - Pro Series II™ 2" to 2.5" Plastic Tube Adapter-0
    Estes 072657 - Pro Series II™ 2" to 2.5" Plastic Tube Adapter-0

    You May Also Be Interested In..

    Customer Reviews

    Based on 6 reviews
    67%
    (4)
    0%
    (0)
    17%
    (1)
    17%
    (1)
    0%
    (0)
    G
    Gnarlbob (Atlanta, GA)
    Adapter size

    Wondering why this 50.8mm to 63.5 mm adaptor fits very few of your rocket tube sizes.???

    J
    Joel Neri (Niagara Falls, NY)
    Pro series ll parts

    Outstanding quality!

    P
    Paul B (Albany, NY)
    2"to2.5" transition

    Part is as expected. The mold joint could be a little cleaner. Took a little time to sand them off.

    M
    MARK LYONS (Yakima, WA)
    PS II Adapter

    Fits well with only minor visable seams. I plan to use it as a tailcone so will be cutting off the narrow end and trimming the larger end.

    R
    RocketGuru
    SuperScaling Estes X-Ray

    Will make a great transition for Mega-X-Ray 29mm powered rocket. Payload will be much larger for a Video Cam onboard coverage and GPS locator. Try will modifing, for less drag, only 3 modified fins, call it Gamma-Ray and should see +1K feet, on BP motor F15-4,6, or E16-4 on low wind days.

    R
    RocketGuy
    Nice 2" to 2.5" transition fits Estes 2" and 2.5"

    Nice 2" to 2.5" transition fits Estes 2" and 2.5" body tube. Total overall length is approximately 6.625". 2.5" shoulder is approximately 2.5" long (+/- .03125"). 2" shoulder is approximately 2" long (+/- .03125"). Exposed transition area is approximately 2.1875" long (2-3/16"). Both ends have eyelets for shock cord or parachute (must be cut out by user).