FX 21 B-5N
FX 21 B-5N

The engines FX 21 B5 N are intended for Buggys 1 / 8. They were developed to give you the best performance. The sleeve 5 ports provides the best combination of power, flexibility and autonomy. They have high-speed special bearings and high speed waterproof front bearing.

 

 

 

Technical Data FX 21 B-5N
C. Capacity : 3,49 cc
Bore : 16,26 mm
Stroke : 16,80 mm
Ports : 5 + 2 By pass
Crankshaft : ø 14 mm
Carburetor : ø 8 mm + reducer
Glow Plugs : Standard
Weight : 385 gr

 

# FX 21 B-5N

Glow Plug FX 21 B-5N

Normal Glow-plug

The insert type is "Standard".

ABC Sleeve 5 PortsPiston FX 21 B-5N

5 ports ABC Sleeve

This 5 ports sleeve is revolutionary in the Off-Road engine’s range. The exhaust has two boosters in order to increase performances and to manage better fuel consumption.The conrod is R7 type is the last generation conrod is lightened with 2 bushings. The casted piston is also drilled to decrease the piston temp.
Every piston sleeve set are fine tuned for optimum timing and better gas flow compared to Stock version. Each piston and sleeve manualluy fixed to check optimum tightening and best compression.

Crankshaft FX 21 B-5N

Turbo Crankshaft

The modified and lightened crankshaft is filled with the special red putty which is positionned to improve the gas passage. In order to reduce the friction and the wear, the crankshaft is HardBlack coated.
The Turbo design of the crankshaft's head highly improves the engine power. For best performances !
Like the piston sleeve set, each shaft is fine tuned for optimum timing and better gas flow compared to Stock version.

WARNING: Do not put the shaft inside solvent or gasoline for cleaning.
This liquides are able to damage the red dough.

Carburetor FX 21 B-5N

Carburetor

The special Off-Road carburetor uses a plastic body to prevent the «vapor-lock». This carburetor is coming with an 8mm reducer (red) its also available in different sizes. As on all JP Engines the idle setting is limited on a single screw to adjust even easier and user friendly. This carburetor has already proved its worth and confer with this engine a great stability setting and excellent performance.