December 17, 2012
DHX 4.0 Air 2009
- Air sprung
- Weight (compared to a coil)
- Piggy back reservoir
- Makes your bike look tough
- Easy to rebuild and to install seals
- Not progressive
- Requires high air pressures
- Not consistent
- Required multiple and frequent servicing
- Pro Pedal adjustment not significant
Overall I'm not entirely impressed the with DHX 4.0 Air. First of all it never felt consistent (going from plush to a pogo stick in seconds); second it required very high air pressures to maintain 25% sag and I would still blow through all of the travel.
Furthermore, in the 3 years that I owned the shock it was returned to the Fox factory 3 times for rebuilds (took them about 1 1/2 months) and to my LBS 4 times for new seals. Finally in the last few months that I had it I did some research on my own and began doing my own servicing.
All in all I have given up on the DHX Air series and have gone to single canister rear shocks like the RP23.