Timbren SES Suspension Enhancement System Rear Kit for 2005+ Ford F-150 / F-250 / F-350 / F-450 Super Duty

Part #	Description
TBN-FF350SDC	Timbren SES Suspension Enhancement System for 2005-2025 Rod F-250/350 Super Duty - Front Kit
TBN-FF550SDE	Timbren SES Suspension Enhancement System for 2005+ Ford F450/550 Super Duty - Front Kit
TBN-FR1504E	Timbren SES Suspension Enhancement System for 2015-2025 Ford F-150 - Rear Kit
TBN-FR250SDG	Timbren SES Suspension Enhancement System for 2011-2016 Ford F-250 Super Duty - Rear Kit
TBN-FR250SDJ	Timbren SES Suspension Enhancement System for 2017-2025 Ford F-250 Super Duty - Rear Kit
TBN-FR350SDJ	Timbren SES Suspension Enhancement System for 2017-2025 Ford F350 Super Duty - Rear Kit
TBN-FRSDD	Timbren SES Suspension Enhancement System for 2007-2014 Ford F450/F550 Super Duty - Rear Kit
TBN-FRTT1504E	Timbren SES Suspension Enhancement System for 2015-2025 Ford F-150 - Rear Severe Service Kit
TBN-FRTT350J	Timbren SES Suspension Enhancement System for 2017+ Ford F250/F350/F450 Super Duty - Rear Severe Service Kit

 

Unstable loads while towing and hauling don't just make for an uncomfortable ride. Difficult handling, rear sag, and corner sway create dangerous driving conditions — for you, your passengers, and other vehicles.

Whether you're towing your RV across the country or hauling hay down the highway, Timbren's Timbren SES kits level your load, making for a safe, controlled ride so smooth, you might forget you're towing altogether.

How? Timbren's Aeon® rubber springs deliver a progressive spring rate. As load increases, Timbren's rubber springs push back harder, eliminating squat, sway, and roll.

So what's the difference between Timbren's severe service kits and classic Timbren SES kits?

Both products feature the progressive spring rate of Timbren's Aeon® rubbers springs. As load increases, Timbren's rubber springs push back harder, eliminating squat, sway, and roll.

But Timbren's SES severe service kits use a single-convoluted Aeon® spring. Designed exclusively for truck campers, these springs resist weight more aggressively to keep your vehicle level and your ride smooth. The result? No more white-knuckling it down the highway — you get a safe, stable handling of your top-heavy load.

What makes Timbren SES kits different from other suspension enhancement systems? Unlike air bags, Timbren's kits require zero post-installation maintenance. And unlike other systems, you can install and haul in under 30 minutes, right from your driveway.

TBN-FF350SDC

Features:

• Reduces front-end sag and sway
• Comfortable ride, loaded or unloaded
• DIY installation
• Zero post-installation maintenance

Specs:

• Rated Capacity: 3000 lbs

Fitment:

• 2005+ Ford F250 / F350 Super Duty 4WD, F350 Super Duty Cab & Chassis 2WD/4WD

Notes:

• Even though you're increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.

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TBN-FF550SDE

Features:

• Reduces front-end sag and sway
• Comfortable ride, loaded or unloaded
• DIY installation
• Zero post-installation maintenance

Specs:

• Rated Capacity: 8000 lbs

Fitment:

• 2008-2014 Ford F450 Super Duty 2WD/4WD
  
• 2005+ Ford F450 Super Duty Cab & Chassis 2WD/4WD
  
• 2015+ Ford F450 Super Duty Pickup 2WD/4WD
  
• 2005+ Ford F550 Super Duty 2WD/4WD
  
• 2020+ Ford F600 Super Duty 2WD/4WD

Notes:

• Even though you're increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.

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TBN-FR1504E

Features:

• Reduces sag, sway, and roll when towing and hauling
• Comfortable ride, loaded or unloaded
• DIY installation
• Zero post-installation maintenance

Specs:

• Rated Capacity: 6000 lbs
• Kit height without 1" spacer = 7.00"
• Kit height with 1" spacer = 8.00"

Fitment:

• 2015-2020 Ford F150 2WD/4WD
• 2021-2025 Ford F150 2WD/4WD King Ranch, Lariat, Limited, Platinum, Tremor, XL, XLT

Notes:

• After installation, there should be a ½" to 1 ½" gap between the rubber spring and vehicle's frame — meaning you'll enjoy a comfortable unloaded ride, too.
• Even though you're increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.

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TBN-FR250SDG

Features:

• Reduces sag, sway, and roll when towing and hauling
• Comfortable ride, loaded or unloaded
• DIY installation
• Zero post-installation maintenance

Specs:

• Rated Capacity: 8,600 lbs
• Overall kit height = 6.50"

Fitment:

• 2011-2016 Ford F250 Super Duty 2WD/4WD

Notes:

• Even though you're increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.
• After installation, there should be a ½" to 1 ½" gap between the rubber spring and vehicle's frame — meaning you'll enjoy a comfortable unloaded ride, too.

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TBN-FR250SDJ

Features:

• Reduces sag, sway, and roll when towing and hauling
• Comfortable ride, loaded or unloaded
• DIY installation
• Zero post-installation maintenance

Specs:

• Rated Capacity: 8600 lbs
• Overall kit height = 6.75"

Fitment:

• 2017-2025 Ford F250 Super Duty 2WD/4WD

Notes:

• Even though you're increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.
• After installation, there should be a ½" to 1 ½" gap between the rubber spring and vehicle's frame — meaning you'll enjoy a comfortable unloaded ride, too.

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TBN-FR350SDJ

Features:

• Reduces sag, sway, and roll when towing and hauling
• Comfortable ride, loaded or unloaded
• DIY installation
• Zero post-installation maintenance

Specs:

• Rated Capacity: 8600 lbs
• Kit height without 1/2" spacer = 6.75"
• Kit height with 1/2" spacer = 7.25"

Fitment:

• 2017-2025 Ford F350 Super Duty 2WD/4WD

Notes:

• Even though you're increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.
• After installation, the rubber spring will be in contact with the vehicle's frame. This contact won't affect ride quality — you'll still enjoy a comfortable unloaded ride, too.

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TBN-FRSDD

Features:

• Reduces sag, sway, and roll when towing and hauling
• Comfortable ride, loaded or unloaded
• DIY installation
• Zero post-installation maintenance

Specs:

• Rated Capacity: 12,000 lbs

Fitment:

• 2011 - 2014 Ford F450 Super Duty 2WD/4WD
  
• 2007 - 2014 Ford F450 Super Duty Cab & Chassis 2WD/4WD
  
• 2007 - 2014 Ford F550 Super Duty 2WD/4WD

Notes:

• Even though you're increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.

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TBN-FRTT1504E (Severe Service Kit)

Features:

• Made exclusively for top-heavy applications that require maximum stability, like truck campers or salt spreaders
• Reduces sag, sway, and roll when hauling top-heavy loads
• Comfortable unloaded ride
• DIY installation
• Zero post-installation maintenance

Specs:

• Rated Capacity: 7000 lbs
• Kit height without 1" spacer = 5.75"
• Kit height with 1" spacer = 6.75"

Fitment:

• 2015-2020 Ford F150 2WD/4WD
• 2021-2025 Ford F150 2WD/4WD King Ranch, Lariat, Limited, Platinum, Tremor, XL, XLT

Notes:

• Even though you're increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.
• After installation, there should be a ½" to 1 ½" gap between the rubber spring and vehicle's frame — meaning you'll enjoy a comfortable unloaded ride.

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TBN-FRTT350J (Severe Service Kit)

Features:

• Made exclusively for top-heavy applications that require maximum stability, like truck campers or salt spreaders
• Reduces sag, sway, and roll when hauling top-heavy loads
• Comfortable unloaded ride
• DIY installation
• Zero post-installation maintenance

Specs:

• Rated Capacity: 8,000 lbs

Fitment:

• 2017-2025 Ford F250 Super Duty 2WD/4WD
• 2017-2025 Ford F350 Super Duty 2WD/4WD
• 2015-2025 Ford F450 Super Duty Pickup 2WD/4WD

Notes:

• Even though you're increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.
• After installation, there should be a ½" to 1 ½" gap between the rubber spring and vehicle's frame — meaning you'll enjoy a comfortable unloaded ride.