LRP Nitro Engine ZR.21 Spec.4 Pullstart

The performance-optimised ZR.21 Spec.4 engine stands for an unequalled power delivery, satisfying every demand. This perfect replacement tuning engine for existing .21 RTR engines features a special timing for even more power compared to its forerunner. And the engine still stays super easy to setup.

The perfect entry into the LRP Nitro engine world.

Features
Replacement tuning engine for existing .21 RTR type engines
Best value for money
XTEC PowerCarb3 15S-2 carburettor – Flow optimised carburettor with 9.0mm inlet for maximum power and easy adjustability at the same time
Universal fit – Fits all major .21 engine mounts
3 + 1 Ports
Standard burn room – Guarantees easy adjustment of the engine in all conditions
XTEC T6 engine housing – Especially reinforced heavy duty engine housing for toughest offroad action
Power Start capable – Prepared for the use of the LRP Power Start for starting the engine at the push of one button

Technical data
Cubic capacity – .21 (3.49 ccm)
Bore – 16.40mm
Hub – 16.40mm
Power – 2.15 HP*
RPM – 35.300 RPM*
Number of ports – 3 + 1
Glow Plug – LRP Standard R5 (No. 35051)
Carburetor – XTEC PowerCarb2 15S-2 with 9.0mm venturi
Weight – 410g
Class – 1/8th Offroad Buggys
*Figures may vary depending on used fuel, muffler and tuning