Reese Quick Install Rail Kit For 11‑19 Chevy Silverado GMC Sierra 2500 3500 Custom Fit No Drill Base Rails For 5th Wheel and Gooseneck Trailer Hitch Fifth
Model: 50066-58Reese Fifth Wheel Rail Kit
Custom Quick Connect Brackets
Installation Hardware
Installation Instructions
Fits The Following Vehicles
2011 - 2014 Chevrolet, Silverado 2500 HD, All Styles
2015 - 2019 Chevrolet, Silverado 2500 HD, Except with OEM HD Towing Prep Package
2011 - 2014 Chevrolet, Silverado 3500 HD, All Styles
2015 - 2019 Chevrolet, Silverado 3500 HD, Except with OEM HD Towing Prep Package
2011 - 2014 GMC, Sierra 2500 HD, All Styles
2015 - 2019 GMC, Sierra 2500 HD, Except with OEM HD Towing Prep Package
2011 - 2014 GMC, Sierra 3500 HD, All Styles
2015 - 2019 GMC, Sierra 3500 HD, Except with OEM HD Towing Prep Package
Features:
Beaneath truck bed custom bracket mounting providing attachments for 5th wheel rails
Quick and easy installation with full truck bed access
For use on all 5th wheel and gooseneck hitches exc. Elite (formerly Signature Series) or Valley UBS hitches
Uses pre-existing holes on the truck frame
Reduces installation time in half when compared to universal brackets
Adaptable hitches include: Curt, Hidden Hitch, Draw-Tite, Reese, Valley and Husky
Corrosion resistant black powder coat finish
Rail Kit Specs:
| Part Number | 50066-58 |
| Brand | Reese |
|
Finish:
|
Black Powder Coat |
| Warranty: | 10-Year Limited |
| Installation Instructions |  |
Questions or Comments? Call 702-374-8999
Founded in 1952, the Reese brand has become a household name in the heavy-duty towing industry. With proven designs that exceed the industry standards, Reese has become the brand of choice when performance is the expectation.
The core product line of Reese is the heavy duty fifth wheels which provide safe towing for the weekend warriors and the seasoned campers. Coupled with the Reese weight distribution systems to control sway, peace of mind is easy to achieve with this product line.
The best known Reese products include the Titan Fifth Wheel series, the Sidewinder, and the Goosebox. These products, among others, have helped Reese achieve the Trailer Life Readers’ Choice Gold winner in the '5th Wheel Hitch' category and the Silver winner in the 'Travel Trailer' category status in 2013.
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Product Details
- Brand: Reese
- Model: 50066-58
- UPC: 016118106749
- Includes: Fifth Wheel Hitch Mounting System Custom Install Kit
Compatibility Chart
Description
Reese Fifth Wheel Rail Kit
Custom Quick Connect Brackets
Installation Hardware
Installation Instructions
Fits The Following Vehicles
2011 - 2014 Chevrolet, Silverado 2500 HD, All Styles
2015 - 2019 Chevrolet, Silverado 2500 HD, Except with OEM HD Towing Prep Package
2011 - 2014 Chevrolet, Silverado 3500 HD, All Styles
2015 - 2019 Chevrolet, Silverado 3500 HD, Except with OEM HD Towing Prep Package
2011 - 2014 GMC, Sierra 2500 HD, All Styles
2015 - 2019 GMC, Sierra 2500 HD, Except with OEM HD Towing Prep Package
2011 - 2014 GMC, Sierra 3500 HD, All Styles
2015 - 2019 GMC, Sierra 3500 HD, Except with OEM HD Towing Prep Package
Features:
Beaneath truck bed custom bracket mounting providing attachments for 5th wheel rails
Quick and easy installation with full truck bed access
For use on all 5th wheel and gooseneck hitches exc. Elite (formerly Signature Series) or Valley UBS hitches
Uses pre-existing holes on the truck frame
Reduces installation time in half when compared to universal brackets
Adaptable hitches include: Curt, Hidden Hitch, Draw-Tite, Reese, Valley and Husky
Corrosion resistant black powder coat finish
Rail Kit Specs:
| Part Number | 50066-58 |
| Brand | Reese |
|
Finish:
|
Black Powder Coat |
| Warranty: | 10-Year Limited |
| Installation Instructions | |
Questions or Comments? Call 702-374-8999
Founded in 1952, the Reese brand has become a household name in the heavy-duty towing industry. With proven designs that exceed the industry standards, Reese has become the brand of choice when performance is the expectation.
The core product line of Reese is the heavy duty fifth wheels which provide safe towing for the weekend warriors and the seasoned campers. Coupled with the Reese weight distribution systems to control sway, peace of mind is easy to achieve with this product line.
The best known Reese products include the Titan Fifth Wheel series, the Sidewinder, and the Goosebox. These products, among others, have helped Reese achieve the Trailer Life Readers’ Choice Gold winner in the '5th Wheel Hitch' category and the Silver winner in the 'Travel Trailer' category status in 2013.
Get Expert Help
Reese Quick Install Rail Kit For 11-19 Chevy Silverado GMC Sierra 2500 3500 Custom Fit No Drill Base Rails For 5th Wheel and Gooseneck Trailer Hitch Fifth Install Notes
Installation Instructions for Part #50066-58
Chevrolet/GMC 2500/3500 Custom Quick Install Mounting Kit with Base Rail Kit
Part Numbers:
- 50066: Custom Quick Install Mounting Kit
- 58058: Base Rail Kit
Tools Required:
- Wrenches: 3/4”, 15/16”
- Drill Bits: 1/8”, 9/16”
- Other Tools: Center Punch, Measuring Tape, Torque Wrench
Hardware List:
50066 Custom Bracket Kit
- (1) Driver Side Frame Bracket
- (1) Passenger Side Frame Bracket
- (4) 5/8” x 2” Carriage Bolts
- (4) 5/8” Serrated Washers
- (4) 5/8” Hex Nuts
- (4) Square Hole Plates
- (4) 5/8” Pull Wires
58058 Base Rail Kit
- (2) Base Rails
- (10) 1/2” x 2” Carriage Bolts
- (10) 1/2” Serrated Washers
- (10) 1/2” Lock Washers
- (10) 1/2” Hex Nuts
- (10) U-Shaped Spacers
Step-by-Step Instructions:
Step 1: Prepare the Vehicle
- Lower and remove the spare tire for additional workspace.
- On trucks with factory brake lines, temporarily detach any clamps holding the wire loom or brake lines on the driver’s side frame rail.
Step 2: Position the Rear Mounting Rail
- Place one base rail in the truck bed.
- Measure the correct distance from the rear edge of the truck bed to the rear edge of the rail:
- 8’ Bed: 29-3/8”
- 6’6” Bed: 24-5/8”
- Ensure the rail is centered side-to-side in the bed.
Step 3: Mark and Drill Rear Rail Holes
- Use a center punch to mark the holes in the rail as shown in the diagram (Row 1 and Row 2).
- Drill 1/8” pilot holes through the marked locations.
- Temporarily position the frame brackets on the outside of the truck frame to confirm alignment with the pilot holes.
- If holes align, enlarge them to 9/16” using a drill bit.
Step 4: Install the Rear Frame Brackets
- Attach the driver-side and passenger-side rear brackets to the truck frame as follows:
- Thread a 5/8” pull wire through the access hole in the truck frame and out through the mounting hole.
- Thread a 5/8” x 2” carriage bolt onto the pull wire and pull it into position.
- Place a square hole plate over the carriage bolt.
- Secure the bracket with a 5/8” serrated washer and 5/8” hex nut.
- Finger tighten the hardware for now.
Step 5: Secure the Rear Base Rail
- Reposition the rear rail over the drilled holes.
- Insert 1/2” x 2” carriage bolts through the rail and truck bed.
- Place U-shaped spacers in the corrugations of the truck bed to prevent crushing.
- Underneath the bed, secure the bolts with:
- 1/2” serrated washers, lock washers, and hex nuts.
- Snug the hardware but do not fully torque yet.
Step 6: Position the Front Base Rail
- Place the 5th wheel hitch or slider into the rear base rail.
- Position the front base rail by inserting the hitch tabs into the mounting slots.
- Ensure the front rail is centered side-to-side in the truck bed.
Step 7: Mark and Drill Front Rail Holes
- Use a center punch to mark the bolt hole positions (Row 3 and Row 4).
- Drill 1/8” pilot holes and confirm alignment with the front frame brackets.
- Enlarge the pilot holes to 9/16”.
Step 8: Install the Front Frame Brackets
- Repeat Step 4 to attach the front brackets to the truck frame using the 5/8” carriage bolts, pull wires, square hole plates, washers, and nuts.
Step 9: Secure the Front Base Rail
- Insert 1/2” x 2” carriage bolts through the front rail and truck bed.
- Use U-shaped spacers to ensure metal-to-metal contact.
- Secure the bolts underneath the bed using 1/2” serrated washers, lock washers, and hex nuts.
Step 10: Final Torque of Hardware
- Torque all hardware in the following sequence:
- 1/2” Carriage Bolts: 75 ft-lbs
- 5/8” Carriage Bolts: 150 ft-lbs
- Double-check that all brackets and base rails are fully secure.
Step 11: Reassemble the Vehicle
- Reattach any brake lines, wire looms, or other components removed earlier.
- Reinstall the spare tire.
Safety Notes:
- Do not install mounting rails over plastic bed liners. Cut the liner to allow for metal-to-metal contact.
- For spray-in liners, ensure proper curing before installation.
- Always verify trailer-to-truck clearance at the cab and bumper before towing.
Specifications:
- Maximum Tongue Weight: 4,500 lbs (2,040 kg)
- Maximum Gross Trailer Weight: 18,000 lbs (8,160 kg)
- Compliance: SAE J-684
Warning: Verify all bolts are torqued to their specified values before towing. Failure to do so could result in injury or damage.
Installation Instructions for Part #50066-58
Chevrolet/GMC 2500/3500 Custom Quick Install Mounting Kit with Base Rail Kit
Part Numbers:
- 50066: Custom Quick Install Mounting Kit
- 58058: Base Rail Kit
Tools Required:
- Wrenches: 3/4”, 15/16”
- Drill Bits: 1/8”, 9/16”
- Other Tools: Center Punch, Measuring Tape, Torque Wrench
Hardware List:
50066 Custom Bracket Kit
- (1) Driver Side Frame Bracket
- (1) Passenger Side Frame Bracket
- (4) 5/8” x 2” Carriage Bolts
- (4) 5/8” Serrated Washers
- (4) 5/8” Hex Nuts
- (4) Square Hole Plates
- (4) 5/8” Pull Wires
58058 Base Rail Kit
- (2) Base Rails
- (10) 1/2” x 2” Carriage Bolts
- (10) 1/2” Serrated Washers
- (10) 1/2” Lock Washers
- (10) 1/2” Hex Nuts
- (10) U-Shaped Spacers
Step-by-Step Instructions:
Step 1: Prepare the Vehicle
- Lower and remove the spare tire for additional workspace.
- On trucks with factory brake lines, temporarily detach any clamps holding the wire loom or brake lines on the driver’s side frame rail.
Step 2: Position the Rear Mounting Rail
- Place one base rail in the truck bed.
- Measure the correct distance from the rear edge of the truck bed to the rear edge of the rail:
- 8’ Bed: 29-3/8”
- 6’6” Bed: 24-5/8”
- Ensure the rail is centered side-to-side in the bed.
Step 3: Mark and Drill Rear Rail Holes
- Use a center punch to mark the holes in the rail as shown in the diagram (Row 1 and Row 2).
- Drill 1/8” pilot holes through the marked locations.
- Temporarily position the frame brackets on the outside of the truck frame to confirm alignment with the pilot holes.
- If holes align, enlarge them to 9/16” using a drill bit.
Step 4: Install the Rear Frame Brackets
- Attach the driver-side and passenger-side rear brackets to the truck frame as follows:
- Thread a 5/8” pull wire through the access hole in the truck frame and out through the mounting hole.
- Thread a 5/8” x 2” carriage bolt onto the pull wire and pull it into position.
- Place a square hole plate over the carriage bolt.
- Secure the bracket with a 5/8” serrated washer and 5/8” hex nut.
- Finger tighten the hardware for now.
Step 5: Secure the Rear Base Rail
- Reposition the rear rail over the drilled holes.
- Insert 1/2” x 2” carriage bolts through the rail and truck bed.
- Place U-shaped spacers in the corrugations of the truck bed to prevent crushing.
- Underneath the bed, secure the bolts with:
- 1/2” serrated washers, lock washers, and hex nuts.
- Snug the hardware but do not fully torque yet.
Step 6: Position the Front Base Rail
- Place the 5th wheel hitch or slider into the rear base rail.
- Position the front base rail by inserting the hitch tabs into the mounting slots.
- Ensure the front rail is centered side-to-side in the truck bed.
Step 7: Mark and Drill Front Rail Holes
- Use a center punch to mark the bolt hole positions (Row 3 and Row 4).
- Drill 1/8” pilot holes and confirm alignment with the front frame brackets.
- Enlarge the pilot holes to 9/16”.
Step 8: Install the Front Frame Brackets
- Repeat Step 4 to attach the front brackets to the truck frame using the 5/8” carriage bolts, pull wires, square hole plates, washers, and nuts.
Step 9: Secure the Front Base Rail
- Reposition the front rail over the drilled holes.
- Insert 1/2” x 2” carriage bolts through the front rail and truck bed.
- Use U-shaped spacers to ensure metal-to-metal contact.
- Secure the bolts underneath the bed using 1/2” serrated washers, lock washers, and hex nuts.
Step 10: Final Torque of Hardware
- Torque all hardware in the following sequence:
- 1/2” Carriage Bolts: 75 ft-lbs
- 5/8” Carriage Bolts: 150 ft-lbs
- Double-check that all brackets and base rails are fully secure.
Step 11: Reassemble the Vehicle
- Reattach any brake lines, wire looms, or other components removed earlier.
- Reinstall the spare tire.
Safety Notes:
- Do not install mounting rails over plastic bed liners. Cut the liner to allow for metal-to-metal contact.
- For spray-in liners, ensure proper curing before installation.
- Always verify trailer-to-truck clearance at the cab and bumper before towing.
Specifications:
- Maximum Tongue Weight: 4,500 lbs (2,040 kg)
- Maximum Gross Trailer Weight: 18,000 lbs (8,160 kg)
- Compliance: SAE J-684
Warning: Verify all bolts are torqued to their specified values before towing. Failure to do so could result in injury or damage.
Technical Support:
For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.
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