K5 DC .21 Off-Road Engine w/Ceramic Bearing (Turbo) by FX Royal Racing Engines

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Frederick, MD

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This product was added to our catalog on April 29, 2015.

This is the FX Royal Racing Engines K5 DC .21 5-Port Off-Road Competition Buggy Engine. The K5 is based on the successful 5K engine and brings all the refinements and improvements based on the experiences collected from the previous racing seasons. The K5 features a sealed combustion chamber with larger surface for improved heat transition to the engine head, a redesigned lightweight engine head for improved cooling, updated carburetor and needles to help improve carburetor setting and provide more linear power. This K5 DC version has a DLC diamond coated crankshaft and high-precision German rear ceramic bearing and premium Japanese front bearing.


  • Sealed combustion chamber with larger surface for improved heat transition to the engine head
  • Redesigned lightweight engine head with improved cooling
  • Updated carburetor and needles to improve carburetor setting and provide more linear power
  • German Made Ceramic Rear Bearing
  • 5-Port Competition High Performance Power
  • 14mm High Precision DLC Crankshaft 
  • CNC Machined Silicium Piston
  • Every Part Designed and Manufactured in Slovakia, Europe

Bore: 16.26mm
Stroke: 16.80mm
Weight: 349g
Max. Power: 2.65 HP @ 33,000 RPM
Practical Range: 4,000-39,000 RPM
Ports: 5 Transfer Ports
Piston: CNC Machined Silicium
Sleeve: CNC Machined Brass, Hard Chrome Plated
Front Ball Bearing: 7x19mm Steel
Rear Ball Bearing: 14x25.8mm Ceramic
Crankshaft: 14mm w/DLC Coating
Carburetor: Alloy Body w/Thermal Isolation; 3-needle w/ Modular Venturi
Glowplug Type: X3
Exhaust Position: Rear


  • (1) X3 Glow Plug
  • (1) Exhaust Gasket
  • (1) Cylinder-head Shim
  • (1) Carburetor Venturi