Product line
HD Shocks for Custom Air Ride
Our flagship reservoir shocks for semis with custom air ride: a 2.5 remote reservoir or a 3.0 billet piggyback. Best when you want the top of the line.

See inside the 3.0 Billet Piggyback
Watch oil pass through the billet bridge into the piggyback reservoir.

2.5 Remote Reservoir vs 3.0 Billet Piggyback
| Spec | HD Shocks 2.5 Remote Reservoir | HD Shocks 3.0 Billet Piggyback |
|---|---|---|
| Body size | 2.5 inch | 3.0 inch |
| Shaft size | 3/4 inch | 3/4 inch |
| Reservoir | Remote, connected by a hose | Billet piggyback, no hose |
| Compression adjuster | On some applications | No |
| Best for | Semis with custom air ride, plus 3/4 and 1 ton trucks | Semis with custom air ride and the heaviest loads |
