This is the Novarossi S21P5XLT .21 class turbo plug nitro race engine. The S21P5XLT makes excellent bottom end power, and is an excellent choice for 1/8 buggies and trucks. This engine is the revised version of the notorious Novarossi P5 and has a slightly more aggressive power band compared to the P5XL. This engine includes a R7 conrod made from super light aluminum and designed to create the least amount of turbulence inside the engine. The sleeve has 5 transfer ports to create a linear power output and to keep fuel consumption low. The crankshaft is manufactured with a larger bore intake to increase the mixture flow, and has a special shape to optimize gas-flow in the engine. The rear bearing has a outer diameter of 25.80mm and has been used in order to avoid ring distortion and to increase lifespan. The two needle, slide valve, nylon body carburetor features a standard design that allows the use of interchangeable venturi's to tune for any track condition.

Recommended Tuned Pipes: EFRA 3005, EFRA 9901, EFRA 9853
Recommended Tuned Manifolds: 41019, 41020, 41021

Specifications:
Displacement: 3.49cc.
Bore x Stroke: 16.26mm x 16.80mm
Transfer Ports: 5
Rear Ball Bearing Type: 25.8mm Steel
Crankshaft Type: 14mm SG
Carburetor Type: 8mm Slide
Material: Plastic
Adjustment: Single
Glowplug Type: Turbo - C6T
Exhaust Position: Rear
Fuel Type: Advise 25% Nitro