Built for Precision.
Tuned to Win.
The FX G501 Tuned is a high-performance .21 competition engine designed for 1/8 GT racing. It delivers strong power from low-end to high RPM while maintaining efficient fuel consumption.
Every component is developed for maximum performance, ensuring reliability and consistency under demanding racing conditions.
Featuring a 5-port sleeve, a DLC-coated tungsten-balanced crankshaft, and a precision-lapped piston and sleeve set, the engine provides sharp throttle response, high efficiency, and consistent race-winning performance.
Optimized Flow.
Maximum Power.
The black-coated crankcase is engineered for optimized fuel flow, delivering strong power from low-end torque all the way to high RPM.
Refined internal passages reduce turbulence and ensure consistent fuel delivery for precise throttle control and stable performance on medium to high traction tracks.
Result: improved performance and better throttle control.
Instant Throttle Response.
Precise Fuel Control.
The G501 Tuned black-coated carburetor features a short needle and optimized venturi for precise fuel metering and stable tuning.
The result is instant throttle response and clean, predictable power delivery. Strong midrange power and smooth transitions ensure excellent drivability.
The G501 carburetor is designed to accommodate the INS box filter.
Result: faster response, smoother control, and more confidence on throttle.
Reduced Friction.
Maximum Power Transfer.
The G501 Tuned Crankshaft is engineered for maximum efficiency and race-proven performance. Featuring a friction-reducing DLC coating and triple tungsten balancing, it ensures superior rotational stability and optimized power delivery.
The advanced DLC surface treatment significantly reduces friction, allowing ultra-smooth connecting rod operation, improved internal flow, and extended lifespan of the conrod and bearings.
At high RPM, the precision-balanced design provides exceptional engine stability and consistent performance even under the most demanding racing conditions.
Result: maximum power transfer, reduced wear, and long-lasting, reliable performance at any RPM.
Precision Fit.
Maximum Efficiency.
Each piston and sleeve set is individually hand-lapped to ensure perfect sealing, faster break-in, and ultra-consistent performance.
The optimized 5-port sleeve design delivers strong bottom-end power, through a very strong mid-range, all the way to impressive top-end speed on the straights.
The result is high overall power, predictable power delivery, and reliable performance under demanding racing conditions.
Result: faster break-in, extended performance stability, and consistent power run after run.
Maximum Strength.
Reliable Power Transfer.
The G501 connecting rod is engineered to withstand extreme loads and high RPM, ensuring reliable operation under the most demanding race conditions.
Manufactured using advanced FX technology and premium materials, it delivers maximum strength, precision, and long-term durability.
The optimized design ensures efficient power transfer and consistent engine performance throughout the run.
Result: reliable performance, stable power delivery, and confidence at high RPM.
Maximum Cooling.
Consistent Performance.
The lightweight 9-rib cooling head is designed for a low center of gravity, keeping temperatures under control even during long, demanding finals.
Optimized airflow ensures consistent cooling at high speeds and in tight technical sections.
Precision machining, optimized geometry, and the clean, premium FX design provide efficient heat dissipation and consistent power delivery throughout the run.
Result: stable temperatures and more consistent lap times.
Stable Combustion.
Consistent Power.
The precision-machined combustion chamber ensures a perfect seal and efficient heat transfer, keeping engine temperatures stable under demanding race conditions.
The integrated O-ring design prevents dirt and debris from reaching critical sealing areas while reducing vibrations, ensuring consistent combustion and stable engine performance.
Result: consistent power delivery, improved efficiency, and reliable performance throughout long finals.
Optimized Flow.
Smoother Engine Response.
The black-coated rear back plate is precision-shaped to reduce internal drag and turbulence.
Optimized flow improves crankshaft support and ensures smoother, more efficient rotation.
The result is faster throttle response and more consistent power delivery across the entire RPM range.
Reliable Ignition.
Stable Power.
Each G501 Tuned engine includes the FX X7 glow plug, optimized for reliable ignition and stable combustion.
The carefully selected heat range ensures crisp throttle response and consistent performance under demanding race conditions.
FX glow plug range allows precise tuning of engine characteristics for different track conditions and driving styles.
Engineered in Europe.
Built to Win.
Each engine is individually hand-finished to deliver consistent performance from break-in through the most demanding race conditions.
Built for reliability. Proven on the track.
