The Pro Comp Suspension part number EXPK5085BPX refers to a specific component in the Pro Comp lineup, designed for off-road and lifted trucks. Understanding what this part is, which vehicles it fits, and how it performs can help you make an informed decision for your suspension upgrade. This article covers the essential details, compatibility, installation considerations, and practical recommendations for the EXPK5085BPX.
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PRO COMP 57050BX-2 PRO-VST Rear Shock Set 2.5 Inch
What Is Pro Comp Suspension Part Number EXPK5085BPX?
The EXPK5085BPX is a Pro Comp suspension component – typically a shock absorber or a strut assembly, but the exact nature depends on Pro Comp's internal naming. Pro Comp uses part numbers that encode information about the type, size, and application. For instance, "EX" often indicates an Explorer series shock, "PK" might denote a package or kit, and the numbers represent dimensions or valving. However, the EXPK5085BPX appears to be a specific shock absorber designed for lifted trucks with coilover or remote reservoir setups.
Common Features of Pro Comp EXP Series Shocks
- Nitrogen-charged for consistent damping and reduced fade.
- Twin-tube design for durability under off-road conditions.
- Boot cover to protect the piston rod from debris.
- Adjustable damping in some models (check if EXPK5085BPX includes this feature).
- Rust-resistant finish to withstand mud, salt, and weather.
Always verify the exact specifications on Pro Comp's official website or product documentation, as part numbers can vary.
Vehicle Compatibility for EXPK5085BPX
This part number is most commonly associated with full-size trucks and SUVs, such as:
- Ford F-150 (2004-2014)
- Ford Expedition (2003-2014)
- Lincoln Navigator (2003-2014)
- Possibly some GM or Dodge models with similar suspension geometry
How to Confirm Fitment
- Check your vehicle's year, make, and model against Pro Comp's application guide.
- Measure the extended and collapsed length of the shock (if replacing). The EXPK5085BPX likely has a specific stroke length suitable for lifts of 2-4 inches.
- Verify mount type – this part uses eyelet or stud mounts? Most Pro Comp shocks use a 16mm top eyelet and a 12mm bottom stud, but always confirm.
- Consult a professional if your vehicle has a unique lift or custom suspension.
If you own a 2006 Ford F-150 with a 3-inch lift, this part is a strong candidate. For other vehicles, cross-reference the part number with Pro Comp's catalog or contact their technical support.
Performance and Ride Quality
The EXPK5085BPX is designed for improved off-road capability without sacrificing on-road comfort. Here’s what you can expect:
On-Road Manners
- Reduced body roll compared to stock shocks.
- Controlled braking dive and acceleration squat.
- Firm but not harsh damping – suitable for daily driving.
Off-Road Performance
- Better wheel control over ruts and rocks.
- Less fade during extended rough trails.
- Improved traction thanks to consistent damping.
Some users report that this shock is slightly stiffer than factory, which is typical for performance-oriented components. If you prefer a softer ride, consider pairing with progressive springs or adjusting tire pressure.
Installation Tips for EXPK5085BPX
Installing a Pro Comp shock is straightforward if you have basic mechanical skills. However, due to the part's size, you may need assistance.
Tools Required
- Jack and jack stands
- Wrench set (metric and standard)
- Torque wrench
- Coil spring compressor (if the shock is a coilover)
- Penetrating oil for rusted bolts
Step-by-Step Overview
- Safely lift the vehicle and remove the wheel.
- Remove the old shock by unbolting the top and bottom mounts.
- Compress the new shock if it's a coilover (follow manufacturer's instructions).
- Install the new shock – ensure bushings and sleeves are properly seated.
- Tighten bolts to spec – typically 40-60 ft-lbs for top nuts and 80-100 ft-lbs for bottom bolts. Check Pro Comp's manual.
- Reinstall the wheel and lower the vehicle.
- Test the suspension by bouncing each corner and taking a short drive.
Note: If you are replacing only one shock, always replace in pairs (front or rear) to maintain balance.
Where to Find the Correct Part
Since EXPK5085BPX is a specific number, it may be discontinued or replaced by a newer version. If you cannot find it in stock, look for:
- Pro Comp part number EXPK5085BPX – check specialty off-road retailers.
- Cross-reference numbers – sometimes this part is superseded by a different code. For example, Pro Comp might now use an "EXPK" or "EXPH" prefix.
- Similar alternatives – the Pro Comp Explorer series offers comparable shocks for lifted trucks.
When searching, use the full part number exactly as written to avoid confusion. Avoid listings that remove the "BPX" suffix, as that could indicate a different valving or mount.
Practical Buying Considerations
- Price: Expect to pay between $80 and $150 per shock, depending on retailer and current promotions.
- Warranty: Pro Comp typically offers a limited lifetime warranty against defects. Keep your receipt.
- Pairing: Match this shock with other Pro Comp components (springs, control arms) for best performance.
- Lift height: This shock is intended for lifts around 2.5 to 4 inches. If you have a larger lift, you may need an extended length version.
Final Recommendation
The Pro Comp EXPK5085BPX is a reliable replacement or upgrade shock for lifted trucks in the 2-4 inch range, particularly for Ford F-150 and Expedition models. It offers a good balance of off-road control and daily driving comfort, making it a practical choice for enthusiasts who use their truck for both work and play.
Before purchasing, double-check fitment using your vehicle's exact year and lift specifications. If the part number is hard to find, consider reaching out to Pro Comp directly or consulting a knowledgeable off-road shop. For most users, this shock will provide years of dependable service without breaking the bank.