[BadBilly]

I have a 2003 Ellsworth Id with a 7.875x2.25 Romic. I just bought a 2005 that has a 8x2.5 Romic. Anyone know why they did this change?
Thanks

 

[lidarman]

Are you sure it's 2.5"

1. I haven't seen a 8"x2.5
2. That much travel might damage an Id because there are stops on how much the rocker and chainstay can swing.

Most later models became the Cali edition using a 7.5x2.0 romic

 

[BadBilly]

Thanks for your input. I thought the 2.5 meant the spring diameter, does it mean stroke? 2.25 is definitely the max stroke an ID can handle. Its not a Cali edition though.

 

[lidarman]

That I know of, the Id-Romic came is three flavors.

8x2.25
7.875x2.25
and 7.5x2.0

and yes the second number is the stroke.

 

[phatfreeheeler]

The printing on the spring is just the max stroke, in inches, that the spring can take. The Romic is most likely a 2.25" stroke with a 2.5" stroke spring, which is pretty common. My 2005 frame came with a 7.875"x2.0" Romic(with a 400lb x 2.25" stroke spring), but I swapped it for the 2.25" stroke shock and definitely preferred the ride. In reality the shock was a hair longer than 7.875" though.

Measure the push rod length if you want to know the stroke length of the shock. (The distance from the bottom of the spring to the bottom of the shock body)