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.
Part numbers
Showing parts for: Freightliner M2-112
Have the number off your old shock?
Factory, Monroe or Gabriel numbers work.
RV
HDS324502001C
Rear
HD 3.0 over inflate rear shock | Freightliner and Western Star FAS II rear air | tandem axle RVs
Fits:
- Freightliner M2 106 / M2 112 with FAS II rear air, Rear. Over inflate kit only. Tandem axle RVs
- Western Star FAS II rear air, Rear. Over inflate kit only. Tandem axle
$667 per shock
Pair: $1,334
Replaces these numbers
| Brand | Number | Type |
|---|---|---|
| Freightliner | 16-18708-000 | FactoryUnverified |
| Freightliner | 16-16764-000 | FactoryUnverified |
| Freightliner | 16-22018-000 | FactoryUnverified |
| Gabriel | 85724 | AftermarketUnverified |
| Monroe | 65490 | AftermarketUnverified |
| Monroe | 555048 | AftermarketUnverified |
| Other | 471700002809 | Unverified |
If your old shock has any of these numbers, this is your part.
HDS324502002C
Rear
HD 3.0 over inflate rear shock | Freightliner and Western Star FAS II rear air | single axle RVs
Fits:
- Freightliner M2 106 / M2 112 / S2RV with FAS II rear air, Rear. Over inflate kit only. Single axle RVs
- Western Star FAS II rear air, Rear. Over inflate kit only. Single axle
$667 per shock
Pair: $1,334
Replaces these numbers
| Brand | Number | Type |
|---|---|---|
| Freightliner | 16-18708-000 | FactoryUnverified |
| Freightliner | 16-16764-000 | FactoryUnverified |
| Freightliner | 16-22018-000 | FactoryUnverified |
| Monroe | 555048 | AftermarketUnverified |
| Gabriel | 85724 | AftermarketUnverified |
| Monroe | 65490 | AftermarketUnverified |
| Other | 471700002809 | Unverified |
If your old shock has any of these numbers, this is your part.
Semi
HDS322902001C
Rear
HD 3.0 rear shock | Freightliner M2 106/112 | FAS II rear air, tandem
Fits:
- Freightliner M2 106/112, Rear. FAS II. Tandem axle RVs and heavy trucks
- Dynamax DX3, Rear. FAS II. Tandem axle
- Renegade Classic / XL, Rear. FAS II. Tandem axle
$667 per shock
Pair: $1,334
Replaces these numbers
| Brand | Number | Type |
|---|---|---|
| Freightliner | 16-18708-000 | FactoryUnverified |
| Freightliner | 16-16764-000 | FactoryUnverified |
| Monroe | 65490 | Aftermarket |
| Monroe | 555048 | Aftermarket |
| Gabriel | 85724 | AftermarketUnverified |
If your old shock has any of these numbers, this is your part.
HDS322902002C
Rear
HD 3.0 rear shock | Freightliner M2 106/112, S2RV | FAS II rear air, single axle
Fits:
- Freightliner M2 106/112 / S2RV, Rear. FAS II. Single axle RVs. Heavy load
- Dynamax Motorhomes, Rear. FAS II. Single axle
- Renegade Valencia / Verona / Explorer, Rear. FAS II. Single axle
$667 per shock
Pair: $1,334
Replaces these numbers
| Brand | Number | Type |
|---|---|---|
| Freightliner | 16-18708-000 | FactoryUnverified |
| Freightliner | 16-16764-000 | FactoryUnverified |
| Monroe | 65490 | Aftermarket |
| Monroe | 555048 | Aftermarket |
| Gabriel | 85724 | AftermarketUnverified |
If your old shock has any of these numbers, this is your part.
Get a quote for HD Shocks for Custom Air Ride
Rather talk? 661-243-0020
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 |