Front Bump Stops 6th Gen 4Runner - Perry Parts

[Trail4R]

Perry Parts Front Bump Stops for 2025+ (6th Gen) Toyota 4Runner | LC250 / GX550 Bracket Retrofit​

Shout out to alldogsoffroad for coming up with the idea.

For 2025+ (6th Gen) Toyota 4Runner owners who are looking to add front bump stops, outside of a coilover/top hat integrated bump stops, you're in luck. The Land Cruiser 250 and GX550 utilize a bump stop bracket that bolts directly onto the 6th Gen 4Runner frame and allows you to run a front bump stop.

We just test-fitted the Gen3 Perry Parts bump stops mounted on the LC250/GX550 bump stop bracket, and everything works as intended. Super clean install as you would expect using a TOYOTA OEM part.

Toyota, for some reason, eliminated traditional front bump stops on the 6th Gen platform, likely as a cost reduction measure. For the majority of buyers who will never leave pavement, this probably won't be an issue, but for anyone wheeling even moderate terrain, suspension compression without a proper bump stop can lead to problems. We have already seen issues on the Tacoma where heavy compression events can overload the upper shock mount area. Check out this R4T YouTube video. This is what happens when the suspension does not have a frame -> LCA (lower control arm) mounted bump stop.

Adding a frame mounted bump stop restores a proper mechanical stop and reduces stress on the suspension during aggressive compression events.

That said, here are the OEM Toyota parts:

To install the Perry Parts bump stops on a 2025+ (6th Gen) Toyota 4Runner, you will need the following Toyota components from the LC250 / GX550 platform.

• Driver side bump stop bracket — 51604 60060
• Passenger side bump stop bracket — 51603 60060
• Fasteners — 91674 N1030 (Qty 6) or M10 1.25 x 1"
• Perry Parts for bump stops: https://perryparts.com/collections/6th-gen-4runner-2025

These brackets bolt directly onto the 6th Gen 4Runner frame with no drilling required.

Perry Parts GEN 3 Front Bump Stops​

The Perryparts GEN 3 bump stops pictured here have been designed specifically for the 6th Gen suspension geometry and this bracket.

They mount directly to the LC250 / GX550 brackets and provide a proper progressive compression stop before the suspension reaches full compression.

This is arguably the cleanest "OEM" bolt-on solution for adding front bump stops back to the 6th Gen 4Runner platform.

Installation Overview​

Compression Stack and the Damper Base​

Here is a look at the compression stack (holding in my hand) and the damper base (mounted to the bracket). Install the Perry Parts bump stops onto the brackets. Our base came installed from Perry.

Grease Damper Threads​

Remove Plastic Clips​

Loosely Torque Top Bolts​

Install the OEM LC250 / GX550 bump stop bracket onto the frame rail using the factory fasteners. Start with the top two and then move to the bottom.

Loosely Torque Bottom Bolt​

Once you have all the bolts in place, loosely threaded, torque the six bracket bolts evenly to secure both brackets in place.

Cycle the suspension to confirm proper clearance and engagement during compression.

Final​

This upgrade is a simple way to protect the front suspension if you plan to run larger tires, upgraded shocks, or do any amount of off road driving.

If you are installing aftermarket coilovers or pushing the truck harder off pavement, adding a proper front bump stop is a smart preventative upgrade.

 

[5G6G4R]

Is Perry offering multiple height options with this kit?

There should be different bump stops for Sport, TRD OR, Pro, Etc?? Each of these models has a different out-of-the-box ride height. Curious to see what the options are going to look like for each trim and/or different lift heights that everyone is running.

 

[climbandroll]

At this time, the new Gen 3 front bump stops shown in this post are not yet available for purchase anywhere that I have found.

 

[5G6G4R]

Just curious why in every other generation Toyota gave the 4Runner and frame mounted bump stop, and even in this generation, the LC250 got the frame mounted bump stops.... but the 6th Gen did not? Makes no sense....

 

[Trail4R]

@5G6G4R

Just to clarify, so there is no confusion, the 6th Gen 4Runner does come from the factory with bump stops mounted on the coilover top hat around the shock shaft.

I cut open the plastic shaft sleeve on the factory TRD Off Road front coilover and found the OEM bump stop. It is mounted inside the coilover at the top hat. So technically, the 6th Gen does have bump stops... they are simply tophat-mounted microcell bump stops instead of frame-mounted like we're used to seeing in the past.

Why did Toyota design it this way?

A lot of modern IFS trucks run this style of bump stop inside the shock. It reduces parts, simplifies assembly, and lowers manufacturing cost. For daily driving and VERY mild off-roading (fireroads, backroads, and the occasional whoops and low speed) it works fine because engagement is smoother and less severe.

The downside of this setup is that the shock becomes the compression limiter.

When the suspension bottoms out at high speed with extreme force, all of that force goes through the shock shaft, piston, and top hat instead of transferring into the frame. That is not ideal under repeated hard compression events. In many vehicle applications that use internal coilover bump stops there is still a secondary frame mounted bump stop as a backup, but that is not the case on the 6th Gen 4Runner or the 4th Gen Tacoma.

What makes this more interesting is that the LC250 and GX550 still have frame-mounted bump stops, while the 6th Gen 4Runner and 4th Gen Tacoma do not.

It raises the question of whether GVWR, towing capacity, or expected duty cycle played a role in Toyota’s decision. That explanation makes sense for the GX550, but it is harder to justify for the LC250 since it shares the same chassis as the 6G4R.

For harder wheeling, relying only on the coilover bump stop is not ideal.

Under repeated hard compression events, the factory bump stop, coilover, or top hat assembly will eventually become the weak point and will ultimately fail... just a matter of time if you wheel hard enough (again, mostly at higher speeds with extreme force). This is why frame mounted bump stops are preferred. They transfer the load from the control arm into the bump stop and then into the frame instead of forcing the shock assembly to absorb the entire impact.

So ideally, a frame-mounted bump stop is far superior and safer than a coilover-mounted bump stop.

But that doesnt mean the coilover-mounted bump stop should scare you away from wheeling. I wheeled the Rubicon with the factory TRD OR Bilstein shocks, and it did great. I was also doing roughly 5-10mph on that trail and didn't see any extreme/harsh bottom out events. Should I trust it forever? No. Would it be ideal for someone like me to upgrade to the frame mounted bump stops? Yes.

In any case, here are some shots of the coilover mounted bump stops on the TRD OR Bilsteins.

 

[Trail4R]

At this time, the new Gen 3 front bump stops shown in this post are not yet available for purchase anywhere that I have found.

Yeah Perry Parts is working on the final design for the front bump stops. They're close but a few tweaks need to be made until they're ready for purchase.

@5G6G4R - I believe they always offer multiple options; one for standard lifts and one for longer travel/extended travel setups. Not sure though exactly what options they're bringing to market. I'll keep you guys posted here.

 

[MVenture]

I went with a bit more of a permanent solution

 

[Trail4R]

I went with a bit more of a permanent solution

Damn, who welded on that bracket? Super clean.

 

[MVenture]

Damn, who welded on that bracket? Super clean.

My buddy Ben at AZ Toy Pros. The mount and bump stop are sold together from Total Chaos and Durobumps.

 

[Trail4R]

My buddy Ben at AZ Toy Pros. The mount and bump stop are sold together from Total Chaos and Durobumps.

Wonder why they didn't offer a bolt-on solution. There are three pre-threaded holes there for a bump stop bracket. Super clean though. Looks great. Obviously stronger.

Just for those who are curious...

TOTAL CHAOS FRONT WELD ON BUMP STOPS
PART #86524-E-BUMP
$469.00 + Fabrictaion Costs

Vs.

Toyota Genuine #51603-60060
Bracket Sub-Assembly, Front Bound Stopper, Right Hand
$76.34

Toyota Genuine #51604-60060
Bracket Sub-Assembly, Front Bound Stopper, Left Hand
$79.66

And then the cost of the Perry Parts Bump Stops.