Astro Max Spare Propeller Set (2270 High-Efficiency)

Astro Max Spare Propeller Set (2270 High-Efficiency) replaces worn or damaged props with a factory-balanced, matched pair—one clockwise (CW) and one counter-clockwise (CCW). These new 22 in high-efficiency blades deliver roughly 10% longer flight time than the previous 21 in Astro Max props. Each blade is pre-mounted to its hub; swap the whole assembly for consistent pitch, balance, and reliability. Upgrade Guidance Already on 2270: buy any number for spares (most teams keep one set: 1×CW + 1×CCW). Upgrading from 2170: purchase two sets to convert all four motors; consider a third set as a spare pair. Replacing a single prop on 2170: you still need two sets to upgrade the aircraft—do not mix 2170 and 2270 props. Promo: add two High-Efficiency (2270) sets to cart and the second set is discounted automatically through December 31, 2025. Key Notes Designed exclusively for Astro Max motors—not compatible with original Astro. Do not mix 2170 (standard) and 2270 (high-efficiency) blades on the same aircraft. Check markings on the blade: “2270 CW” or “2270 CCW.” Refer to the Astro Maintenance Manual for inspection, torque, and installation procedures. Blades are matched/balanced as a pair—do not swap individual blades between sets. Specs Astro Max Propellers (2270 High Efficiency) Diameter 21.8 in / 554 mm (unfolded length ≈ 22 in) Efficiency gain ~10% longer flight time vs. prior 21 in (2170) Astro Max props Configuration 1 × CW + 1 × CCW, each pre-mounted to hub Identification Marked on blade: “2270 CW” or “2270 CCW” Fasteners 8 × M3 × 6 SHCS (included) In the Box (1) Counter-Clockwise (CCW) Astro Max Replacement Propeller — 2270 High Efficiency (1) Clockwise (CW) Astro Max Replacement Propeller — 2270 High Efficiency (8) M3 × 6 socket-head cap screws Note: Blades are matched and balanced as a pair. Replace complete assemblies; do not mix individual blades from different sets. Compatibility Astro Max (all variants), including Astro Max (NDAA/Blue) Not compatible with original Astro motors or Alta platforms. Important: do not mix 2170 and 2270 props on the same aircraft. If upgrading from 2170, replace all four positions (two sets).