This is the Siegetek Concepts SGS (Spring Guide Spacer).
This spacer is installed onto a bearing-equipped spring guide and preloads (compresses) the spring to compensate for the shortened stroke caused by sector gear cutting.
It adds 24.6mm of length and is made of aluminum.
Since its position is determined by the thrust bearing, it can be installed on spring guides with bearings from various manufacturers.
Due to the wide flange,
it cannot be used with gearboxes that allow for one-touch removal of the spring guide.
![[Siegetek Concepts] SGS Spring Guide Spacer](http://rock-et.jp/cdn/shop/files/SC_SGS_1024x1024.jpg?v=1785733171)
![[Siegetek Concepts] SGS Spring Guide Spacer](http://rock-et.jp/cdn/shop/files/SC_SGS_1_1024x1024.jpg?v=1785733171)
![[Siegetek Concepts] SGS Spring Guide Spacer](http://rock-et.jp/cdn/shop/files/SC_SGS_medium.jpg?v=1785733171)
![[Siegetek Concepts] SGS Spring Guide Spacer](http://rock-et.jp/cdn/shop/files/SC_SGS_1_medium.jpg?v=1785733171)
