Check the listing for details. Castle Creations 1406 Sensored 4-Pole Brushless Crawler Motor (1900kV). Condition: New. Listed at 91.95 USD. New in package Castle Creations "Slate" 1406 Sensored 4-Pole Brushless Motor (1900kV)The Castle "Slate" 1406 Sensored 4-Pole Brushless Crawler Motors are ROCK READY! With super smooth startup and low RPM control, Castle has you covered if you are looking for the ultimate motor for the trails or Ultra 4 track days.Features:IMPROVED 4-POLE 12-SLOT design boasts exceptional EFFICIENCY and produces LESS HEAT. QUIETSENSE technology shields the sensors from magnetic field noise generated from the motor coils and keeps your motor and ESC in sync at all times. OPTIMIZED design eliminates the need for mechanical timing adjustments. Our sensor alignment method delivers uniform timing and torque in both directions, automatically. REBUILDABLE design allows users to replace front end bell/bearing assembly or rotor/shaft assembly. ROAR standard sensor port and labeled connections. Updated modern and sleek design; looks as cool as it performs. Specifications:Input Voltage Range: 3S-4S LiPo Kv: 1900 Max. RPM: 100,000 Can Length: 49.5mm Can Diameter: 36mm Weight (w/wires): 197 g / 6.9oz Shaft Length: 15mm Shaft Diameter: 1/8" (3.17mm) (Optional 5mm rotor replacement available) Mounting Hole Specifications: M3 @ 25mm Connectors: 4mm male Castle Bullet Connectors attached to replaceable 13 gauge wire; includes 210mm length sensored wireItems Needed for Operation: Compatible Electronic Speed Control (ESC) Application Guidelines: Ideal for 1:10 scale low speed rock crawlers/trail runners on 3S-4S weighing less than 8lbs. Can also be used in more aggressive setups in lighter 1:10 scale touring cars, stadium trucks or buggies weighing up to 5lbs. Recommended ESC(s): Mamba Max Pro, Mamba X, Mamba Micro X Max. Recommended Vehicle Weight: 8lbs when used for low speed/moderate driving style like rock crawling and trail running; 5lbs for more racing and aggressive driving styles. Running modes: SMARTSENSE™, Sensored, Sensorless with Castle sensored capable ESCs Free Shipping To USA Vehicle models vary. We DO NOT guarantee this will fit the vehicle specified in this listing!Verify that this item is appropriate for your vehicle. Consult your manual or vehicle manufacturer.Verify vehicle fit-ment before purchase.Returns will only be accepted on items that are returned in new, factory-sealed packaging. Used, damaged (unless damaged when it arrived to you), and opened items will not receive a full refund. Any and all warranty claims will be handled through the manufacturer directly.