Murnan Modified OS Speed R2103 GT Engine "5 Port"
Murnan Modified OS Speed R2103 GT Engine. This is one of the fastest .21 GT engine we offer.
This engine is a 5 port ROAR Legal GT Engine.
The engine comes with the onroad cooling head. For more cooling in hot weather, it is advised to switch to a larger offroad cooling head. Most offroad cooling heads will fit.
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