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Description
2025 GM 1500 Trail Boss AT4 6" Big Lift Kit (44-35625)The ReadyLIFT 6 inch Big Lift Kit for the 2025 Chevy Silverado Trail Boss and GMC Sierra AT4 is a comprehensive solution for owners seeking maximum height and off road presence. It features heavy duty boxed steel crossmembers and a full width 3 16 inch plate steel skid plate for ultimate underbody protection. By utilizing a proprietary lower strut clamshell design and top mount extensions, this kit maintains factory suspension geometry and ensures
The ReadyLIFT 6-inch Big Lift Kit for the 2025 Chevy Silverado Trail Boss and GMC Sierra AT4 is a comprehensive solution for owners seeking maximum height and off-road presence. It features heavy-duty boxed steel crossmembers and a full-width 3/16-inch plate steel skid plate for ultimate underbody protection. By utilizing a proprietary lower strut clamshell design and top-mount extensions, this kit maintains factory suspension geometry and ensures your high-performance factory shocks perform at their best even at an 8-inch total lift height.
Features
- Provides a total of 8 inches of lift (ReadyLIFT 6-inch + Factory 2-inch lift).
- Angled and offset top-mount strut extensions minimize wear and optimize shock performance.
- Proprietary lower strut clamshell design maintains factory geometry for a smooth ride.
- Includes heavy-duty tubular upper control arms (UCAs) with maintenance-free pivot bushings.
- Boxed steel front and rear crossmembers provide superior structural rigidity.
- 1/4-inch boxed plate steel differential drop brackets with double gussets prevent torsional twisting.
- Fabricated 5-inch tall tapered rear lift blocks with integrated bump stop landings maintain proper rake.
- Comes with a full-width 3/16-inch plate steel front skid plate for essential protection.
Notes
- The "Auto 4 Hi" feature is not recommended for use after installation.
- Vehicle alignment, headlamp aim, and Advanced Driver Assistance Systems (ADAS) should be recalibrated after installation.
- Trimming of the front valance and inner fender liners is required for recommended tire/wheel combinations.
- Installation time is estimated at 10 hours, excluding alignment and tire assembly.
Compatibility Notes
- Exclusively designed for 2025 Chevy Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 4WD models.
- Not compatible with AT4X, ZR2, or models equipped with rear mono-leaf springs.
- Will not fit 2025 models with round U-bolts unless paired with U-bolt kit 67-35150UB.
Tire Fitment
- Recommended (No Trimming): 35x12.50 tires on 20x9 wheels with 0 offset.
- Maximum Fitment (With Trimming): 37x12.50 tires on 20x9 wheels with 0 offset.
- Maximum Wheel Width: 20x10 with -18 offset (requires trimming).
Specs
- Total Lift Height: 8 inches.
- Crossmember/Skid Plate Material: 3/16-inch thick plate steel.
- Differential Drop Material: 1/4-inch boxed plate steel.
- Kit Contents: Ductile iron knuckles, front/rear crossmembers, skid plate, differential drops, strut extensions, tubular UCAs, rear blocks, and hardware.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Durable and Fun, Just Gets a Bit Rough
Size: Medium/Large, Color: Chopper - Large
This is a really good toy overall, especially if you have dogs that love to chew. My dogs were immediately into it—they play with it nonstop, toss it around, and stay entertained for a while, which I love. It definitely holds up better than most toys we’ve tried.
The only reason I’m giving it 4 stars instead of 5 is because over time it does start to fray a bit and gets a little rough, especially with heavy chewing. It’s not completely indestructible, but it still lasts longer than a lot of other toys.
Overall, still a great buy and I would recommend it if your dogs need something tough but fun!
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Worthwhile!
Size: Medium/Large, Color: Turkey Day Drumstick - Large
I have a small dog with a really strong bite! Usually have to buy toys that are meant for bigger dogs. This has lasted us for what feels like forever. It does sound very heavy when dropped! My dog loves it though! Would definitely recommend!
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Crazy for her iguana!
Size: Medium/Large, Color: Illana the Iguana - Large, Size: Medium/Large, Color: Illana the Iguana - Large
Instant fav for my girl but looks like I'll be replacing often 🤪 she is a super chewer. She loves the soft vs hard combo on toys. Damage in the pic is within 10 mins. 😬😬😬 excellent quality
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Reviewed in the United States on May 27, 2026
★★★★★ 3
Foreign body risk for dinosaur dogs
Size: Medium/Large, Color: Dog Ness Monster - Large, Size: Medium/Large, Color: Dog Ness Monster - Large
My dog Bert had foreign body surgery 10 days ago because he swallowed a piece of a toy, so I was looking for something stronger, like for a tyrannosaurus rex. This toy had good reviews, so I bought it for him.
In 25 minutes and he'd chomped a chunk of the blue water part off. Bought the toy around 8am, gave it to him around 8pm, and it was in the trash by 8:30pm.
This toy is definitely NOT for super chewer tyrannosaurus rex dogs like Bert. But definitely IS a toy that is pretty sturdy and strong for dogs who don't have the bite force of a dinosaur.
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Reviewed in the United States on April 12, 2026
★★★★★ 4
Definitely not indestructable
Size: Medium/Large, Color: Dog Ness Monster - Large, Size: Medium/Large, Color: Dog Ness Monster - Large
I have a 1-year-old toy fox terrier (Rocky, pictured). He has been chewing on this toy for seven months now; it is one of his favorites. He has been unable to seriously damage the "ocean" portion of this toy, but as you can see from the provided image, the sea serpent has not faired that well. It is missing its snout and smaller portions of the humps. My guess is that the advertiser images showing much larger dogs with "like new" versions of the toy are just that...NEW AND UNCHEWED.
I have not had to clean up bits of this toy from my floor, so I assume Rocky has been swallowing them. My hope is that the yellow material of the serpent is not chemically dangerous when exposed to digestive fluids.
Rocky easily destroys plush toys in a matter of days if not hours and, consumed pieces of a small microfiber blanket that he liked to toss around and play tug-of-war with (past tense as he destroyed it and has since been trashed after I began finding feces-stained undigested pieces of it lying around). Since this toy has survived seven months and has remained recognizable, I have to agree it is durable.
Just beware, if my small toy fox terrier can damage the toy as pictured, expect your large breed chewer to do similar or worse damage. Also, the toy is very heavy! When Rocky drops it down a flight of stairs, it makes a MAJOR thud at the bottom, and sometimes makes me wonder if it might crack the large tile at the bottom.
I cautiously recommend the product.
Note the yellow frisbee in Rocky's picture. It is only a few months old and surprisingly has not suffered any chew damage despite substantial abuse. It appears to bend in the wind like a proverbial reed, evading damage by yielding to pressure.
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Reviewed in the United States on July 5, 2024