[Chris Canning]

Certainly isn’t stock 1100s because they are blue and come in at 315mm.

With the yellow spring which were considered(cough) the sport shock could be any length early versions were 318mm,BM had a spell of 310mm with the short para arm and then various Boxercup were mid 220.

Regardless their junk produced in Spain at $50 each so that gives you some idea of the quality over the years their have been some folks prepared to break into them but increasingly rare,if cost is a hurdle look secondhand on eBay or ask on here just check the length but as already been said even the most basic aftermarket shock will be a league better.