For those wanting to decode the numbers on their Ohlins shock springs, here's a chart I re-created from the old hard to read one I've had for a while.
On Ohlins shock springs, you'll see numbers in the format similar to this: 1091-39/L048.
The L048 in this example, is the manufacturing date.
The spring length and rate are the number to the left of the manufacturing date.
In this example, 1091 is a 57mm (2.24") I.D. spring, that has a 160mm/6.3" free length.
The 39 indicates it has a spring rate of 110 N/mm (or 11.22 Kg/mm, or 628 Lb/in.).
All of the springs in this chart are 57mm/2.24" I.D., which are the springs used for most shocks.
Depending on application, most will fall into the types 1091, 1092, 1093, or 1095.