MACH-1 "Hyper-Flow" reed cage spacers

Billet aluminum reed block spacer from Mach-1 for Minarelli horizontal engines. The reed valve will sit higher than its original position when using the spacer. This produces a more direct airflow pattern towards the boost port and therefore increases scavenging and higher power output can be achieved. Also increases crankcase volume. They can be stacked for tuning purposes. but we offer these in 4 different thicknesses from 4.22mm up to 1/2" 4.2mm 6.2mm 9.2mm 1/2"