SMJ short spring alloy collars

Available now from Speedmaster Japan are alloy collars for the use of short springs on standard length touring car shock absorbers. The collars allow the use of 20mm springs on shock absorbers that normally utilise standard 25mm springs as they bridge the gap between the preload nut and the spring that occurs when using short-type springs. The collars also save time in the pits as changing spring configurations is now much easier without having to readjust the preload nut every time you swap between long and short springs. The collars are made from high-quality aluminium, they come black or blue anodised and are usable with all shocks of up to 13mm diameter and all springs of 14mm inner diameter or more.

Source: Speedmaster Japan [smj-rc.com]