O.S. Engine OS-13875 - 21XZ-R Ver.II On-Road Engine  [OS-13875]

O.S. Engine #13875 - 21XZ-R Ver.II On-Road Engine
Price:
USD$361.00
Brand:
O.S. Engine
Model:
OS-13875
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Unleashing Power: The O.S. Engine 21XZ-R Ver.II

The O.S. Engine 21XZ-R Ver.II, model OS-13875, stands as a testament to precision engineering tailored for the serious on-road RC racer. Known for its exceptional power output and high RPM range, this engine is a formidable choice for those seeking to dominate the track.

Precision and Performance

At the heart of the 21XZ-R Ver.II lies a meticulously crafted engine with a displacement of 3.49cc. Its bore and stroke measurements are finely tuned at 16.27mm and 16.8mm respectively, providing a balance that maximizes both power and reliability. With an impressive practical RPM range of 4,000 to 45,000, this engine is versatile enough to handle a variety of racing conditions.

Engineered for Excellence

With an output of 2.75ps at 33,000rpm, equivalent to 2.79hp, the 21XZ-R Ver.II ensures that you have ample power on tap to outpace the competition. Weighing in at just 343g, it offers an optimal power-to-weight ratio, making it a preferred choice for racers who demand agility without compromising on strength.

Optimized for Competitive Edge

Designed with the competitive racer in mind, the 21XZ-R Ver.II is perfect for those who seek to push their RC cars to the limits. Whether you’re a seasoned professional or an ambitious enthusiast, this engine delivers the performance needed to excel in high-stakes races.

Specifications

  • Displacement: 3.49cc (0.213cu.in.)
  • Bore: 16.27mm (0.6405in.)
  • Stroke: 16.8mm (0.661in.)
  • Practical RPM: 4,000 ~ 45,000
  • Output: 2.75ps/33,000rpm (2.79hp/33,000rpm)
  • Weight: 343g (12.08oz.)

The O.S. Engine 21XZ-R Ver.II is a powerhouse designed for those who take RC racing seriously. Its combination of power, precision, and lightweight design makes it suitable for competitive racers seeking an edge on the track.

It is recommended to use high-quality nitro fuel with a blend of 20-30% nitromethane for optimal performance.
This engine is best suited for intermediate to advanced users due to its high power output and tuning requirements.
Regular maintenance is crucial. Clean the engine after every run and perform a thorough check every 10 hours of operation.
While primarily designed for on-road use, it can be adapted for off-road vehicles with proper tuning and adjustments.

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