LRP have introduced their new ZR.28 SPEC.4 pullstart engine for 1/8 buggy and truggy. Compared to his predecessor, the LRP ZR.28 Spec.4 pullstart has been significantly improved in the carburettor 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.

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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. Due to its compact construc- tion 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.



Technical data:

Max. RPM: 33.900 RPM
Engine size: .28 (4.57 ccm)
Power output: 3.93 HP
Number of ports: 5+1
Carburetor: XTEC PowerCarb3 15S-2 with 9mm venturi
Weight: 420g
Classes: 1:8 buggy & truggy