Overview
This 16 in travel version of the Bilstein 8125 Series coilover with reservoir, part number 33-225654, is a 60mm threaded-body coilover shock for custom off-road builds. Bilstein lists it for universal off-road use rather than one named vehicle, and the springs are a separate purchase.
The 8125 line is built around dual-rate springs, and this model’s 26.5 in collapsed length stretches to 42.5 in extended, giving 16 in of travel. A remote reservoir linked by a high-temperature hose is meant to keep damping consistent when the shock heats up. Owners can rebuild the unit with Bilstein replacement parts, and the zinc-coated threaded body allows quick height changes.
Key features
- Reservoir and high-temperature hose for steady performance in intense heat
- Competition-designed, 3-stage seal pack
- 22mm hard chromed, case hardened piston rod
- Rod is resistant to sand blasting and rock chipping
- Threaded body for ride height and spring changes
- Eye mounts at both ends
- Rebuildable by owners with Bilstein parts
- Machined to precise tolerances in the USA
Specifications
| Brand | Bilstein |
|---|---|
| Part number | 33-225654 |
| UPC | 651860754789 |
| Series | 8125 Series |
| Shock type | Hydraulic / gas charged, coil-over |
| Body design | 60mm ID threaded body, screw top (coilover) |
| Reservoir | Yes, remote |
| Standard body size | 16 in |
| Travel length | 16.00 in |
| Collapsed length | 26.5 in |
| Extended length | 42.5 in |
| Lower mount | Eye |
| Upper mount | Eye |
| Shaft diameter | 22mm |
| Finish | Zinc plated |
| Compression | 1100 |
| Rebound | 3700 |
| Springs | Sold separately |
Vehicle fitment
Bilstein’s 33-225654 is a universal off-road listing, so it is not tied to a particular model year or chassis. Fit depends on the 26.5 in collapsed length, the 42.5 in extended length and your mounting points, so take measurements before buying springs.
With no vehicle named, this coilover does not cover any specific model by default; match its dimensions to your build. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Springs are not included, so pick dual-rate springs that suit this 26.5 in collapsed and 42.5 in extended length and your target ride height. Route the remote reservoir hose away from moving parts, and support the vehicle on stands while you adjust the body.
What’s included
The 8125 Series coilover with its remote reservoir and high-temperature hose.
Not included: Springs, which are sold separately.
