Swingarm alloy -4cm extra short
Short arm for 6" wheels 24cm from pivot to centre of chain adjuster
With rubber swinging arm bushes you only want to tighten the pivot bolt enough so the centre of the bush can still rotate on full swing.
Don’t run the chain too tight or it will rip out the left side bush.
Only suitable for smaller engines. Bigger CC high torque engines will hammer the bushes