MissMooRC .21 Cylinder/Liner Timing Variation Shims is available now. These shims are used to adjust the height of the cylinder/liner in the crank case to adjust the port timings of your nitro engine. Kit includes a 1 x 0.10mm, 1 x 0.15mm and 1 x 0.20mm shims. Suitable for OS or Novarossi based .21 nitro engines.
#RC#RCRacing#porttimings#nitroengines#MissMooRC#OS#OSSpeed#Novarossi#linershims