Don't Let This Happen to You!

Bent Flanges: A Common Weak Point The factory LCA mounting flanges are only 4mm thick, making them prone to bending under heavy off-road use, hard impacts, or repeated suspension cycling. Our kit makes each flange nearly 3X thicker. A bent flange can throw off your suspension geometry, leading to misalignment, uneven tire wear, and unsafe handling. If your frame is already bent, it's essential to straighten it before welding in our Heavy Duty Frame Brace Kit for a strong, precision-fit upgrade.
Badly bent front flange, photo credit Kyle Puckett
Incorrect + Exposed ❌	Correct + Protected ✅
Restore Proper Alignment—The Right Way Many alignment shops mistakenly rotate eccentric cam hardware upside-down, leaving it exposed to rocks and trail obstacles—risking damage and costly repairs. Our Heavy Duty Upright Plates force proper cam orientation, ensuring that alignment hardware stays in its factory-correct, upright position. This design guarantees consistent alignments, no matter which shop works on your vehicle, and keeps your suspension dialed in for both on-road stability and off-road durability.

Click here to view additional info and install pictures!

Basic Overview Video (11:22min)

TECH TIP: Strengthen Cam Tabs Without Removing Control Arms

Thanks to our patented design, the Marlin Crawler HD LCA Frame Brace Kit is the ONLY cam tab strengthening solution that can be installed without removing a single part from your vehicle. Unlike other kits that require removing your lower control arms, drilling 24 spot-welds, & cutting off factory tabs, ours wraps around and reinforces the entire factory setup — giving you up to 2,000% strength increase with zero disassembly.

Here's how one customer did it:

Step 1: Prep the frame — wire brush off grease, grime, and factory paint where you'll be welding.

Step 2: Use anti-spatter spray and a weld blanket to protect sensitive components (CV boots, brake lines, ABS wiring, etc).
Step 3: Wrap water-soaked rags around the LCA bushings to keep them cool.

Step 4: Tack weld parts into position and then weld one edge at a time, rotating around to other up-rights to manage heat. Keep rags saturated before resuming each weld.
Step 5: Once the welds cool (~20 min), spray paint to seal against corrosion — and that's it!

You've just transformed your paper-thin 0.10" (2.6mm) cam tabs into armored uprights nearly 2.0" thick, with no re-alignment needed, no parts removed, and no extra labor costs.

And the benefits go beyond strength:

• Converts single-shear control arm mount to double-shear, strengthening the IFS sub frame and protecting from trail damage
• Adds angled deflection bracing to protect alignment hardware from rock strikes
• Preserves alignment and prevents damage from underbody impacts
• Prevents sloppy alignment shops from incorrectly rotating your eccentrics upside-down and vulnerable to objects passing under your rig

No cutting. No re-alignment. No regrets.

Below is another customer example, also showing ample clearance around an aftermarket skid plate:

Want to go the full route?

The full install method involves removing both lower control arms, giving you better access for full coverage spray painting and maximum corrosion protection. Many customers choose to install our kit now using the quick method above, then revisit the paintwork later during future suspension upgrades.

Either way, you've just made a massive upgrade to your vehicle's alignment integrity, safety, and driving performance — for life.

 

For 1995-04 Tacomas and 1996-2002 4Runners, it is a bit different due to the frame and skid plate design which prevented us from adding the lower double-shear plating, but the kit is even easier to install as it only involves just the uprights like this: