

All 50 states · no minimum
Our California warehouse
Lightweight · corrosion-resistant
No drilling · hand tools
Universal Fit
Adjustable mounting — fits most full-size and mid-size trucks
Specifications
Premium Alloy / Steel
Durable Powder-Coat
Bolt-On Installation
Bolt-On Install · What You'll Need
Install At A Glance
60–90 minutes
Socket wrench, ratchet, Phillips screwdriver
Beginner-friendly · 2 people recommended
No drilling required
What's In The Box
- Main Assembly
- Mounting Brackets
- Stainless Hardware Kit
- Gaskets & Weather Seals
- Printed Instructions
- Hex Key Set
— WHO IS TKMAUTO
Aluminum bed caps, built for American pickup trucks.
TKMAUTO focuses on one thing: lightweight aluminum bed caps that bolt onto factory bed rails — no drilling, no body shop. Every cap ships from our Pomona, California warehouse, direct to your driveway in the lower 48.
If you have a fitment question before buying — for your year, trim, or 5.5ft vs 6.5ft bed — email us. We'll confirm before you click ADD TO CART.
Email — info@tkmauto.com
Pomona, California
Every order ships from our CA warehouse via U.S. freight carriers.
Free U.S. Shipping
All 50 states. No minimum, no hidden freight surcharge.
Aluminum Construction
Lightweight, weather-tight panels. DIY bolt-on install.
6 Truck Lines Supported
Ford · Toyota · GMC · Chevrolet · RAM · Jeep — year-specific fitment.
Product Description
Read the full breakdown expand
TKMAUTO Truck Bed Extender Rubber Bumper — Large (4-Pack)
OEM-style replacement rubber bumpers for TKMAUTO truck bed extenders — full-size and mid-size trucks
Keep your TKMAUTO truck bed extender performing like new. These replacement rubber bumpers protect your truck bed and cargo from scratches and impact — a simple, affordable upgrade when your originals show wear.
Key Features
Direct Replacement
Designed for TKMAUTO Truck Bed Extenders. OEM-compatible fit — no modifications required.
4-Pack. Includes four large rubber bumpers to fully replace a complete set.
Bed & Cargo Protection
Scratch Prevention. Rubber construction prevents metal-on-metal contact between the extender and truck bed or tailgate.
Vibration Dampening. Reduces rattling and movement during transport.
Specifications
| Size | Large |
| Quantity | 4 bumpers per pack |
| Compatible With | TKMAUTO Truck Bed Extenders — Full-Size and Mid-Size Pickup Trucks |
| Material | Rubber |
Questions
Which size do I need — Large or Small?
The Large bumper is designed for full-size and mid-size pickup trucks. If you have a mid-size truck only, check the Small variant. When in doubt, refer to your TKMAUTO bed extender model.
How many bumpers are included?
Each pack includes 4 rubber bumpers.
Free shipping within the continental United States. 30-day satisfaction guarantee.
Frequently Asked
How long does installation take?
Most TKMAUTO parts install in 45–120 minutes using hand tools. No drilling is required in the majority of cases — we use factory mounting points or bed-rail clamps. A printed install guide with torque specs is in every box.
Will it fit my truck?
Check the fitment box near the top of this page. Vehicle-specific parts list exact year/make/model/bed. Universal-fit parts use adjustable clamps that fit the major full-size and mid-size trucks.
What is it made of?
We build with marine-grade aluminum (does not rust) or cold-rolled steel (for load-critical parts like roll bars and bumpers) — always with a two-stage corrosion-resistant finish. See the spec grid above for exact material on this product.
Shipping and warranty?
Free U.S. shipping from our California warehouse. If it doesn't fit your truck, our California team will work with you to make it right.

