Tekin's SPEC-R2 brings next-level performance to SPEC racing classes. Improving on the original SPEC-R design, they revamped and refined the stator, rotor and materials used to increase both speed and torque while providing minimal fade during the late stages of the race. The SPEC-R2 is a hand-crafted, high-performance racing motor that is ready to hit the track right out of the box.Includes:TT2782 12.5mm SILVER rotor. Setup critical, SILVER rotors are a special material and can be damaged by excessive heat from over-gearing and over-timing.Features:60 Degrees Adjustable Timing AdvanceSPEC Racing Specific DesignCNC Machined 6061-T6 Billet Aluminum Heat Sink CanNeodymium Sintered MagnetPrecision Engineered for Maximum Energy ConversionHigh Purity Copper Windings Maximize ConductivitySensored System ReadyAnodized Endbell Plates Maximize Corrosion and Wear ResistanceHigh RPM Precision BearingsOversized Front BearingLegal in Major Governing Race BodiesROAR ApprovedSpecifications:Motor Turns: 13.5TInput Voltage: 1S-3S LiPo/LiHV / 4.2V-13.05VDesign: 2-pole 3-slotWeight: 5.35oz / 152.2gShaft Size: 3.18mm / 1/8inMotor Length: 50.25mm / 1.987inMotor Diameter: 35.85mm / 1.40inBearing Dimensions: Front 4 x 13 x 5mm / Rear 1/8 x 3/8 x 5/32inRotor Size: TT2782 12.5mm SilverMax Operating Temperature: 180F / 82CMax RPM: 100,000Mounting Pattern: M3 @ 25.4mm / M3 @ 1.0inRebuildable: YES