#50100 FX K3 DC - 3 Ports, DLC, Ceramic bearings
FX presents the all-new K3 engine that was engineered and designed to provide a more linear power delivery, with higher top-end RPM compared to the K5 engine. The best performance is ensured using the new FX 2131 muffler, which was specifically designed for the K3 engine.
The K3 is a premium, high-performance 1/8 off-road engine designed for high-competition racing. Features include: 3 ports, silicone-filled diamond-coated crankshaft, premium Japanese front bearing, and ceramic German rear bearing. The K3 is an extremely reliable and powerful engine suitable for any race track and racing conditions.
All the finest engineering and craftsmanship has gone into the concept, design, creation, and finishing of FX Engines. This engine and all of its parts were designed and manufactured by FX in-house in Slovakia, Europe from the finest European materials and using the most advanced Swiss, German, and Italian technologies. Even the crankcase was die cast in-house using fully-robotic die-casting technology.
All parts are individually measured and inspected, and all dimensions are recorded to ensure a full manufacturing & assembly record of every single part. Each engine includes a manufacturing certificate that records all important serial numbers and measurements so that, at any time, all details of the production –material batch, machine programs, responsible craft persons and production dates – can be traced back to the beginning.
Features:
- 3-port, high-competition 1/8 off-road engine
- 14mm high-precision, silicone-filled crankshaft
- DLC Diamond-coated crankshaft
- CNC-machined silicium piston
- Designed and manufactured in Slovakia, Europe
- Engine manufacturing certificate included
Specs:
Displacement: 3.5cc
Bore: 16.40mm
Stroke: 16.40mm
Weight: 349g
Max. power: 2.6 HP @ 34,000 RPM
Practical range: 4,000-42,000 RPM
Ports: 3 transfer ports
Piston: CNC-machined silicium
Sleeve: CNC-machined brass, hard chrome plated
Front ball-bearing: 7x19mm, made in Japan
Rear ball-bearing: 14x25.8mm ceramic, made in Germany
Crankshaft: 14mm
Carburetor: Alloy body with thermal isolation; 3-needle with modular venturi
Glow plug: X3
Exhaust position: Rear
Includes:
- X3 glow plug
- Exhaust gasket
- Cylinder-head shim
- Carburetor venturi
- 3mm dust cap
- 6mm dust cap
- 16mm dust cap
- 18mm dust cap

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