This is the Reedy Sonic 540-M3 17.5 1S Modified Brushless Motor. FEATURES: Meets ROAR, EFRA, and IFMAR specs New stator design improves mid-range feel Balanced, high-strength sintered rotor for powerful fade-free performance Dual-precision ball bearings For on or off-road use CNC machined, lightweight 3-piece can Heavy-duty silver-plated solder tabs are cupped to aid soldering INCLUDES: Reedy Sonic 540-M3 17.5 Modified Brushless Motor REQUIRES: Compatible electronic speed control for brushless motors SPECS: Cells: 1-2S LiPo Diameter: 1.4" (35.8mm) Length: 2.07" (52.7mm) Shaft Diameter: 0.124" (3.15mm) Weight: 5.99 - 6.2oz (170 - 176g) BOX DIMENSIONS: 3.63" W. X 2.00" H. X 4.38" L. BOX WEIGHT: .48 LBS.
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