RS Reverb questions

[mo6500]

I wanna buy a Reverb for my M (17.5") Rumblefish.

According to SRAM website, the 125 mm travel is offered with 380mm or 420mm seatpost length.

Will the 380mm length gonna be fine for my M size bike or should I buy the 420mm (a tad heavier, might suit bigger frames?).

Went to my LBS the other day and saw the Reverb in the box. All I could see is the seatpost length (380mm) and diameter (31.6mm) but not the seatpost travel.

My LBS tried to help but even he wasn't sure about the travel, since it's not written anywhere - not on the seatpost and not on it's box.

Is there any way for me to know if that 380mm/31.6mm I saw in the box has a 100mm or 125mm travel? Is there any code/sign that tells the difference?

Thanks, Mo.

[Wheelman55]

I think that it should be 125...but take the mfg part number on the box and google it up to be certain.

[therollex]

i'd look elsewhere. 30 ride old post taken into my LBS to find $130 of parts required to fix it. The same day a X0 shifter was also taken to LBS. No warrantee on either from Sram.

[Calhoun]

could you measure the shaft of the post?