190x51 rear shock

[Kev.k]

I’m building my first bike and need to choose a 190 x 51mm rear shock.

Would this be a bad choice?

I’m happy to spend more if it’s bad. I wanted a bomber coil but can’t find it in this size.

Thanks

 

[dudebro]

If you're willing to sacrifice the frame travel, you can look also for 190x45 shocks. 190x45 is the new metric standard and 190x51 is older legacy standard so the selection would be wider if you included 190x45 as well. For example rockshox super deluxe coil is available in size 190x45 and I'd prefer that over old monarch.