For the last 12 months the Reedy development team has been working behind the scenes utilizing a combination of new ideas & proven concepts to create the all-new Sonic 540-M3 Competition Brushless Motor On the outside the 540-M3 appears very similar to the Mach 2 but look closely & you will realize that nothing has been carried over from the previous model A 3-piece CNC machined can reduces weight while improving airflow component fit & bearing alignment Heavy-duty silver-plated solder tabs are not only thicker to reduce resistance but are also cupped to aid soldering & well supported to prevent internal connections from fatiguing over time Inside changes are less obvious but result in huge performance gains Sonic 540-M3 Spec motors walk the edge of legality in exchange for maximum power output & RPM thanks to an all-new stator design pure copper magnet wire & low-resistance collector rings Available short-stack 175 & 135 versions suit 1S-powered pan cars & under the right circumstances can create a power advantage in 2S-powered buggies trucks & touring cars Unlike Spec class racing Modified is about controlling power Sonic motors have always been known for their linear power delivery & the 540-M3 does not disappoint A new stator design improves mid-range feel which both on- & off-road racers will appreciate A balanced high-strength sintered rotor provides powerful fade-free performance thanks to enhanced manufacturing processes To fine-tune for specific applications & tracks a variety of optional rotors are available Lastly larger precision stainless steel ball bearings have been fitted to accommodate high RPM loads with enhanced reliability Several versions are available & all meet ROAR EFRA & IFMAR specifications Visit wwwreedypowercom for a complete list of tuning rotors replacementoption parts & detailed specifications