1 x 4000-12 + 4000-09, 2 x 0085-7, 1 x 4000-11
Special tuned muffler for Whiplash-G II and Whiplash gasser V1 in combination with 300 size BH Hanson, TRM and Zenoah gas engines.
Fits RC and PUH engines from ZG 270 to 300 engines. Makes more torque and more power.
Head speed is about 35 to 50 rpm higher at full pitch than using the 4000-10 in combination with 300 size engines.
Made from stainless steel. Reliable and lightweight.
Fits Whiplash gasser, Spectra-G, 1005 gasser.