Which Bilstein Shocks are Best for Your Truck?

Bilstein makes more shocks for more vehicles than just about any brand on the market. If it has four wheels and a license plate, chances are they’ve built something for it.

But with that many options, choosing the right one can get overwhelming, especially if you’re shopping for a truck or SUV. From 4600s to Black Hawks, 8100s to B6s, we’re going to run the full gamut, so your search for the right shock becomes a whole lot less nebulous.

Understanding the Bilstein Family Tree

Before we dive into individual shocks, it helps to understand how Bilstein organizes its lineup. Their “families” are categorized by intended use, performance level, and even ride height.

At the base level:

• B1 Series: Replacement hardware (strut mounts, spring seats, steering stabilizers, etc.)
• B3 Series: OE-style replacement springs
• B4 Series: OE replacement shocks and struts

These lines are all about restoring factory performance. And given Bilstein’s role as a major OEM supplier, you can trust they’ll meet or exceed stock quality.

That said... they’re not exactly exciting.

For most truck and SUV owners, the real journey starts at the B6 line.

B6 Line: Stock Height, OEM+ Performance

4600 Series

The B6 4600 is where things start getting interesting.

Built around a 46mm monotube piston, these shocks are a noticeable upgrade over the smaller twin-tube designs many vehicles come with. Their digressive valving leans slightly firm, but in return, you get:

• Reduced brake dive
• Less body roll
• Improved stability under load
• Better control over larger bumps

They won’t completely transform your vehicle, and hardcore enthusiasts will likely want more but for daily drivers, occasional towing, or tackling a twisty road, they’re a solid OEM+ upgrade.

Importantly, they are designed for stock ride height only and won’t provide lift.

B8 Line: Performance for Lifted and Leveled Vehicles

This is the lineup most of you came for.

5100 Series

The 5100s are arguably Bilstein’s most popular shocks, and for good reason.

• Mild off-road use
• Larger tires
• Increased center of gravity from lifts or leveling kits

Their standout feature is they are ride-height-adjustable struts, allowing you to reuse factory springs while adding up to 2–3 inches of lift (depending on application).

They’re the go-to “starter” upgrade:

• Affordable
• Capable
• Easy to install

That said, they’re still a relatively small-bodied shock, so they have limits—especially on heavier or more aggressive builds.

B12 / 5112 / 5162: Matched Systems

Bilstein’s B12 line pairs shocks with matched springs for a more complete solution.

For vehicles with separate shocks and springs, the 5112 and 5162 kits offer:

• Springs engineered specifically for Bilstein dampers
• Improved ride quality through proper spring/shock pairing
• A more cohesive, “holistic” setup

Since digressive shocks can be sensitive to spring rates, going with a matched system often pays off.

6100 / 6112: The Sweet Spot

If there’s a true sweet spot in Bilstein’s lineup, this is it.

Many people start with 5100s—then quickly upgrade. Those who step into the 6100/6112 range tend to stick with them much longer.

What Makes Them Different?

It comes down to size:

• 60mm piston
• 2.6” body

That’s a massive jump from the 5100’s ~2.0” body, and it changes everything.

6112 (Coilover Kits)

Most applications use the 6112, which includes springs (hence the “12”).

Key features:

• Larger springs to fit the wider body
• Ride height adjustment via circlip
• Increased travel and reduced coil bind
• Ability to achieve more lift and ride better doing it

They typically reuse factory top hats, though they come unassembled (We offer assembly as an option for an additional charge).

6100 (Shock/Strut Only)

The 6100 is the same large-body design without springs.

Newer vehicles (like certain Broncos and Tundras) can reuse factory springs with these shocks, making them a clean upgrade path.

Why They Matter

The larger piston allows for:

• More damping force
• Softer tuning without sacrificing support
• Significantly better small-bump compliance

In short: More performance and more comfort—at the same time.

That’s rare at this price point.

For most people, this is the “buy once, cry once” option.

8100 / 8112: For Serious Enthusiasts

At the top of the B8 lineup sits the 81 series and this is where things get serious.

If you’re debating between 4600s and 8100s... these probably aren’t for you.

But if you know, you know.

8100 Smooth Body

The “entry-level” 8100 (if you can call it that) features:

• 2.6” body
• 60mm piston
• External reservoir

Compared to the 6100:

• More heat capacity
• More sustained performance
• Greater durability under hard use

They’re also fully serviceable and tunable, meaning:

• Rebuildable long-term
• Custom valving options available
• These are for drivers who push hard—especially off-road, at speed, or under load.

8100 DSA

Add Dual-Speed Adjusters, and things get even better.

These allow you to independently tune:

• Low-speed compression (handling, body control)
• High-speed compression (big hits)

Bilstein’s adjusters offer one of the widest tuning ranges available, going from extremely soft to impressively firm.

For the price difference, it’s a no-brainer upgrade.

8100 Bypass

These were once the crown jewel of Bilstein’s lineup and they’re still incredibly capable.

Bypass shocks use external tubes to:

• Soften the ride in the main zone
• Increase damping at the ends of travel

Result:

• Excellent small-bump compliance
• Massive bottom-out resistance

They’re both plush and supportive, something most shocks have to compromise on.

They’re expensive, but compared to other bypass options, still a strong value.

8100 Black Hawk (Zone Control DSA+)

This is the evolution.

Instead of bypass tubes, these use internal hydraulic bump zones:

• JCO (compression): Two-stage bottom-out control
• RCO (rebound): Top-out control

Rather than reducing damping in the main zone, they add it outside the ride zone, creating a highly controlled, predictable feel.

With DSA+ adjusters, you can tune:

• Compression (low + high speed)
• Bottom-out resistance independently

These are likely the future of Bilstein’s high-end lineup.

8112: The Flagship Coilover

The 8112 takes everything from the 8100 Black Hawk design and packages it into a coilover.

8112s are:

• Position-sensitive
• Highly controlled
• Extremely capable

But they come with tradeoffs:

• Limited ride height range
• Designed for performance, not extreme lift

If your goal is stance, look elsewhere.

If your goal is performance, these are hard to beat.

8112 DSA+

Adding DSA+ turns them into something truly special.

You gain:

• Compression adjustability
• Adjustable JCO (bottom-out control)

This is especially useful for:

• Running without sway bars
• Fine-tuning handling vs articulation
• Adapting to different driving conditions

Yes, they’re expensive but they rarely need custom tuning because the adjustability range is so wide.

Final Thoughts

Bilstein’s lineup spans everything from basic replacements to near race-level performance.

• 4600 → Best OEM+ daily driver
• 5100 → Entry-level lift and off-road use
• 6100/6112 → Best all-around performance value
• 8100 → High-performance, rebuildable systems
• 8112 → Top-tier bolt-on performance

At the end of the day, the right shock comes down to how you actually use your vehicle.

If you’re chasing comfort and mild improvement, stay low in the lineup.

If you’re chasing real performance, especially off-road, the higher-end options aren’t just better... they’re in a completely different league.