.28 RTR

.28 RTR

LRP NITRO ENGINE ZR.28 SPEC.4 PULLSTART Due to modifications of the already great predecessor, the LRP ZR.28 Spec.4 Pullstart has been significantly improved in the carburettor vernier adjustment as well as in the cooling of the cylinder head. The Heavy-Duty CoolDownMax cylinder head that has already successfully been introduced with its bigger brother, now also serves in the ZR.30. A completely new carburettor has been build-in for an even better adjustability especially when in at idle speed. The performance, especially when stationary, has been improved with this move. All in all, the ZR.28 Spec.4 offers more torque with better adjustability and improved responsiveness. Otherwise being a giant, it is a true midget in its dimensions. Due to its compact construction the engine can be used as a direct replacement to the .21 engines. The ZR.28 Spec.4 fits into all common .21 engine mounts. FEATURES MASSIVE Big Block size - You cannot replace displacement with anything but even m