The 300R FourStroke is the highest performing engine in its class. The naturally aspirated 4.6L V-8 provides an astounding 44% in increased displacement and up to 40% higher overall bottom end torque than the legacy two-stroke 300XS it replaces. Custom Racing intake cam profiles and short intake manifold runners maximize power throughout the rated speed range. An integrated oil cooler keeps oil temps down throughout the Racing exclusive 5800-6400 rpm operating range. Transient spark calibration boosts torque by 7% for unmatched acceleration. Advanced Range Optimization automatically adjusts fuel delivery for up to 10% improvement in cruise-speed fuel efficiency. All of this on 87-octane (90 RON) pump fuel while maintaining a comparable weight as it’s legacy two-stroke cousin. Best of all, the 300R is backed by a three-year factory warranty. Specs: RATED HORSEPOWER (HP/KW) 300/224 BORE & STROKE (IN/MM) 3.6 X 3.4/92 X 86 IDLE RPM 600 MAX RPM AT FULL THROTTLE 5800-6400 CYLINDERS/ENGINE CONFIGURATION V-8 (64 Degree) With 32-Valve Dual Overhead Cam (DOHC) DISPLACEMENT (LITER/CID) 4.6/279 INDUCTION SYSTEM Custom Racing Short-Runner Intake Manifold FUEL SYSTEM Electronic Fuel Injection (EFI) Computer Controlled With Advanced Range Optimization FUEL REQUIREMENTS Unleaded Regular 87 Octane Minimum (R+M/2) Or 90 RON 10% Ethanol Maximum IGNITION SYSTEM SmartCraft PCM 112 Digital Inductive CHARGING SYSTEM 85-Amp (1071 Watt) With Idle Charge STARTING Electric Start With SmartStart Protection LUBRICATION SYSTEM Integrated Wet Sump OIL REQUIREMENT NMMA Certified FCW SAE 10W-30 THROTTLE AND SHIFT CONTROLS Mechanical And Digital Throttle And Shift (DTS) TRI-RAM MIDSECTION High-Durometer Elastomer Upper Mount And Solid Lower Mounts HEAVY DUTY MIDSECTION Solid Mounts; Remote Trim System GEARCASE Torque Master, Sport Master Or 5.44" HD GEAR RATIO 1.75:1, 1.60:1 (Selected Sport Master Models) CAMBERED SKEG Sport Master And Torque Master GEAR SHIFT F-N-R DRY WEIGHT (LBS./KG) L - 20" Std: 512/232; HD: 546/247 // XL - 25" 556/252 // XXL - 30" 566/257 WARRANTY 3-Year Warranty
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