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2007 - 2021 Toyota Tundra
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Want to take the family on a cross-country adventure? Or perhaps you're planning a shorter trip to your favorite campground. Whatever your destination, it's important to have the right equipment, especially when towing a fifth wheel trailer. To ensure proper hookup and safety while towing, you'll need something to attach your fifth wheel hitch in the bed on your truck. Many pickups come equipped with factory-installed rails or puck systems, but if you don't have one of these already installed, don't worry. REESE has an extensive line of mounting rails and bracket kits, custom-made to the exact specifications needed based on your truck's year, make, and model. REESE also offers several Industry Standard designs, as well as fastener kits, spacer kits, and a Power Puck mounting kit, so you can be sure you're covered, no matter what pickup you're using to tow. So make it easy. Make it fun. Make it REESE, so you can make the journey as enjoyable as the destination.
| BRAND: | REESE |
| PART NUMBER: | 58309 |
| WARRANTY: | LIMITED 10 YEAR WARRANTY |
| WEIGHT: | 3 LBS |
| UNIVERSAL OR SPECIFIC FIT: | SPECIFIC |
| WELDING REQUIRED: | NO |
| MOUNTING HARDWARE INCLUDED: | YES |
| RAILS INCLUDED: | NO |
| DRILLING REQUIRED: | YES |
| MATERIAL: | STEEL |
| BOLT GRADE: | GRADE 5 |
| LOCKABLE: | NO |
| COLOR: | BLACK |

Reese has designed towing equipment since 1952 and remains a benchmark for heavy-duty towing. The line covers fifth wheel hitches such as the modular M5, gooseneck couplers including the Goose Box, air-ride and short-bed pin boxes, weight distribution systems with active sway control, and the accessories that connect them, all built to exceed published industry standards.
Reese has been pioneering towing performance since 1952, when Margaret Reese asked her husband TJ to stop travel trailers rocking every time somebody walked through them. His answer, the first pair of stabilising jacks, was simple and effective enough to change the RV industry. From that starting point Reese grew into a designer and manufacturer of complete towing systems, and today it anchors the heavy-duty end of the Horizon Global towing portfolio.
Fifth wheel towing is where the brand's engineering is most visible. The M5 fifth wheel hitch uses a modular design that breaks into manageable sections for assembly, with a wider stance, tighter tolerances and a shock absorption system aimed at the jolts that travel up through a truck bed. For owners who would rather tow from a gooseneck coupler and keep the bed clear, the Goose Box 20K replaces the trailer's king pin with a gooseneck connection carrying its own air-ride cushioning.
Pin boxes are a Reese speciality. The 5th Airborne uses air-ride technology to dampen road shock and reduce the chucking motion that makes fifth wheel towing tiring, while the Sidewinder was designed for short-bed pickups, pivoting the connection point so the trailer can turn sharply without the front cap meeting the cab.
For conventional towing, Reese weight distribution systems restore load to the tow vehicle's front axle and control sway. The Pro Round Bar distributes weight evenly while damping sway, and the Pro Dual Cam II uses active cam-based sway control that works harder the stronger the sway force becomes. Complete kits pair bars, head and shank to a rated tongue weight, and dedicated sway control kits can be added to existing setups. The products suit RV owners, horse and livestock haulers and anyone towing near the upper end of a vehicle's rating.
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1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2007 - 2021 | Toyota Tundra | Fifth Wheel Trailer Hitch Spacer Kit Drilling Required Install Time is 0 minutes |
The Reese Fifth Wheel Hitch Mounting System Bracket Kit RE58309 (Part #RE58309) fits 2007-2021 Toyota Tundra models. The 2021 model year is the last year covered by this part number. For newer models, check for an updated version.
The Reese Fifth Wheel Hitch Mounting System Bracket Kit RE58309 (Part #RE58309) fits the following vehicles: 2007-2021 Toyota Tundra. Always verify your specific year, make, and model before ordering.
Yes, the Reese Fifth Wheel Hitch Mounting System Bracket Kit RE58309 (Part #RE58309) is designed to fit the 2007-2021 Toyota Tundra.
The Reese Fifth Wheel Hitch Mounting System Bracket Kit RE58309 (Part #RE58309) Drilling is required for installation. Basic hand tools are typically all you need.
The 58309 kit is designed for 2007 and newer Toyota Tundra models with 6.5' and 8' beds. If you have a Crewmax with a 5.5' bed, you will need a Sidewinder Pinbox Coupler instead. Do not install this kit on a truck with a 5'7" long bed unless the trailer is equipped with a Sidewinder Pinbox Coupler.
No, the 58309 kit is not designed for Crewmax 5.5' beds. For this configuration, you must use a Sidewinder Pinbox Coupler instead.
The 58309 kit includes: 3" carriage bolts with tube spacers for Row 3 attachment, 3" carriage bolts with 1/2" spacers and bevel washers for Row 4 attachment, 1-3/4" carriage bolts with short and long brackets for base rail attachment, and additional hardware such as conical toothed washers and hex nuts. The kit must be used together with the 30035 mounting kit, which provides 2" carriage bolts for bed attachments.
Yes. The 58309 service kit must be used together with the 30035 mounting kit. You will need to read pages 1-3 of the 30035 instructions for general information before starting installation.
Before drilling any holes, you must check for obstructions such as fuel lines, brake lines, and structural members. The manual emphasizes that failure to check for obstructions could result in damaged fuel or brake lines and other structural damage. It is ultimately the responsibility of the installer to prevent this damage.
The Row 3 mounting holes go through the inside of the bed sill. You must drill through both the bed and the top of the frame on both sides. A tube spacer should be placed inside the bed sill on top of the frame and under the bottom of the bed, lined up with the drilled hole before inserting the 3" carriage bolt.
The rear rail on the passenger side is secured directly to the frame with 3" carriage bolts provided in the 58309 kit. For the Row 3 attachment, a tube spacer is placed inside the bed sill on top of the frame and under the bottom of the bed, lined up with the drilled hole before inserting the carriage bolt.
For the Row 4 passenger side attachment, stack two 1/2" spacers and a bevel washer (all provided in the 58309 kit) to fill the gap between the bed and the frame. Use another bevel washer, a conical toothed washer, and a hex nut to fasten the 3" carriage bolt in place.
Install long brackets on the front rail and a short bracket on the rear rail driver side using 1-3/4" carriage bolts provided in the 58309 kit. All other attachments to the bed use 2" carriage bolts from the 30035 kit.
The measurement is 29 3/4" from the rear edge of the truck bed to the rear edge of the base rail.
Use the rear center hole only in the rear base rail. The base rail must have a bolt in either of the marked center holes, but the rear center hole is the specified location for this installation.
Yes, drilling is required. You must drill through the top of the frame on both sides for Row 3 attachment. For Row 4 passenger side attachment, you must also drill through the bed and the top of the frame. Before drilling, you must check for obstructions such as fuel lines, brake lines, and structural members.
The diagram shows an optional weld pattern for the brackets, indicated by "*Optional weld pattern" on the detail drawings. However, the manual does not provide specific welding instructions or specifications. Consult the manufacturer or a qualified welder for welding procedures if you choose this option.
You must read pages 2-3 of the 30035 instructions before starting installation. Failure to do so could result in significant vehicle damage. Additionally, you must check for obstructions before drilling, as failure to do so could result in damaged fuel or brake lines, structural members, and other damage.
Yes, for 2007 and newer Tundra with 6.5' or 8' beds. Crewmax 5.5' beds require a Sidewinder Pinbox Coupler. Do not install on 5'7" beds without a Sidewinder Pinbox Coupler.
Yes, you must purchase the 30035 mounting kit separately. The 58309 is a service kit that works with the 30035 mounting kit.
Yes, you must drill through the truck bed and frame at multiple locations. Before drilling, check for fuel lines, brake lines, and structural members to avoid damage.
The kit includes 3" carriage bolts for Row 3 and Row 4 attachments, and 1-3/4" carriage bolts for bracket installation. Additional 2" carriage bolts come from the 30035 kit for bed attachments.
The kit includes tube spacers for Row 3, 1/2" spacers for Row 4, bevel washers, and conical toothed washers. These are used to fill gaps and secure bolts at various attachment points.




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The staff was able to quickly assist me with locating the correct product I needed. Shipping was really fast. Item arrived in 2 days. Will be using TowUniverse again!!
May 22, 2023