Skip to main content

Confirm this item fits

Add your vehicle to make sure this item fits and qualifies for free returns.

Picture 1 of 1

Stock photo
Stock photo
Rr Overload Helper Spring Timbren Industries FRTT350J - Picture 1 of 1

Suspension Rubber Helper Spring Kit-XL Timbren SES FRTT350J

4.673 product ratings
Windy City Auto Parts 2 (12400)
60% positive feedback
Price:
$398.07
Free shipping
Estimated delivery Tue, Dec 2 - Fri, Dec 5
Returns:
30 days returns. Seller pays for return shipping.
Condition:
New
Part #: FRTT350J. Warranty Type: Manufacturer Warranty. Warranty Duration: 1 Year. Windy City Auto Parts carries over 1 million wholesale priced automotive parts. This part is sold as a PART NUMBER ONLY.

About this product

Product Identifiers

BrandTimbren
Manufacturer Part NumberFRTT350J
eBay Product ID (ePID)235918935

Additional Product Features

NotesDescription--Suspension Enhancement System
Sub TypeSuspension Rubber Helper Spring Kit
Part TypeSuspension, Springs and Related Components

All listings for this product

Buy It Nowselected
Any Conditionselected
New
Pre-owned
Timbren Rear Suspension Enhancement System Kit For Ford F-250 F-350 F-450
item 1 Timbren Rear Suspension Enhancement System Kit For Ford F-250 F-350 F-450
$355.00
Free shipping
Timbren FRTT350J for 2015 Ford F-450 Super Duty Rear Suspension Enhancement Syst
item 2 Timbren FRTT350J for 2015 Ford F-450 Super Duty Rear Suspension Enhancement Syst
$398.07
Free shipping
Timbren FRTT350J Suspension Enhancement System | High-Quality Auto Part, Univers
item 3 Timbren FRTT350J Suspension Enhancement System | High-Quality Auto Part, Univers
$398.07
Free shipping
Timbren SES Rear Severe Suspension Enhancement System for 17+ FORD F-250
item 4 Timbren SES Rear Severe Suspension Enhancement System for 17+ FORD F-250
$398.07
Free shipping
Timbren SES Rear Suspension Enhancement Kit for Ford F-250 & F-350 2017
item 5 Timbren SES Rear Suspension Enhancement Kit for Ford F-250 & F-350 2017
$398.07
Free shipping
Timbren for 2015 Ford F-450 Super Duty Rear Suspension Enhancement System FRTT35
item 6 Timbren for 2015 Ford F-450 Super Duty Rear Suspension Enhancement System FRTT35
$398.07
Free shipping
Rr Overload Helper Spring Timbren Industries FRTT350J
item 7 Rr Overload Helper Spring Timbren Industries FRTT350J
$398.07
Free shipping
Suspension Rubber Helper Spring Kit-XL Timbren SES FRTT350J
item 8 Suspension Rubber Helper Spring Kit-XL Timbren SES FRTT350J
$398.07
Free shipping
Timbren FRTT350J Rear Axle SES Suspension Upgrade for Ford F-250/350 Super Duty
item 9 Timbren FRTT350J Rear Axle SES Suspension Upgrade for Ford F-250/350 Super Duty
$398.07
Free shipping
Timbren For 2015 Ford F-450 Super Duty Rear Suspension Enhancement System
item 10 Timbren For 2015 Ford F-450 Super Duty Rear Suspension Enhancement System
$398.07
Free shipping
Timbren FRTT350J Suspension Enhancement System
item 11 Timbren FRTT350J Suspension Enhancement System
$398.07
Free shipping
Timbren Suspension Enhancement for 17-24 Ford F250 F350 SuperDuty Severe Service
item 12 Timbren Suspension Enhancement for 17-24 Ford F250 F350 SuperDuty Severe Service
$398.07
Free shipping
Rr Overload Helper Spring Timbren Industries FRTT350J
item 13 Rr Overload Helper Spring Timbren Industries FRTT350J
$398.07
Free shipping
item 14 Timbren FRTT350J
$398.07
Free shipping
TIMBREN 17C F250/F350 Fits SUPER DUTY 2/4WD SEVERE SERVICE REAR SUSPENSION HELPE
item 15 TIMBREN 17C F250/F350 Fits SUPER DUTY 2/4WD SEVERE SERVICE REAR SUSPENSION HELPE
$398.07
Free shipping
Timbren FRTT350J Suspension Enhancement System | High-Quality Auto Part, Univers
item 16 Timbren FRTT350J Suspension Enhancement System | High-Quality Auto Part, Univers
$398.07
Free shipping
Timbren Rear Suspension Enhancement System 2017-23 Ford F250 F350 Super Duty
item 17 Timbren Rear Suspension Enhancement System 2017-23 Ford F250 F350 Super Duty
$398.07
Free shipping
Timbren For 2015 Ford F-450 Super Duty Rear Suspension Enhancement System
item 18 Timbren For 2015 Ford F-450 Super Duty Rear Suspension Enhancement System
$398.07
Free shipping
Last one
item 19 TIMBREN FRTT350J SES KIT
$398.07
Free shipping
Timbren FRTT350J 17-22 F250 and F350 Timbren Severe Service Rear Suspension H...
item 20 Timbren FRTT350J 17-22 F250 and F350 Timbren Severe Service Rear Suspension H...
$398.07
Free shipping
Timbren for 2015 Ford F-450 Super Duty Rear Suspension Enhancement System
item 21 Timbren for 2015 Ford F-450 Super Duty Rear Suspension Enhancement System
$398.07
Free shipping
TIMBREN SES SUSPENSION ENHANCEMENT SYSTEM SKU# FRTT350J - REAR SEVERE SERVICE KI
Last one
item 22 TIMBREN SES SUSPENSION ENHANCEMENT SYSTEM SKU# FRTT350J - REAR SEVERE SERVICE KI
$398.07
Free shipping
Timbren FRTT350J Rear Axle SES Suspension Upgrade for Ford F-250/350 Super Duty
item 23 Timbren FRTT350J Rear Axle SES Suspension Upgrade for Ford F-250/350 Super Duty
$398.07
Free shipping
Timbren Suspension Rubber Helper Spring REAR Kit fits 2017-2024 Ford F-250 F-350
item 24 Timbren Suspension Rubber Helper Spring REAR Kit fits 2017-2024 Ford F-250 F-350
$398.07
Free shipping
Suspension Rubber Helper Spring Kit-XL Timbren SES FRTT350J
item 25 Suspension Rubber Helper Spring Kit-XL Timbren SES FRTT350J
$405.16
Free shipping
SES Suspension Enhancement System Fits 2023 Ford F-450 SUPER DUTY 4WD 2023 FORD
item 26 SES Suspension Enhancement System Fits 2023 Ford F-450 SUPER DUTY 4WD 2023 FORD
$412.60
Free shipping
Suspension Rubber Helper Spring Kit-XL Timbren SES FRTT350J
Last one
item 27 Suspension Rubber Helper Spring Kit-XL Timbren SES FRTT350J
$417.58
Free shipping
Suspension Rubber Helper Spring Kit-XL Timbren SES FRTT350J
item 28 Suspension Rubber Helper Spring Kit-XL Timbren SES FRTT350J
$417.99
Free shipping
item 29 TIMBREN FRTT350J Suspension Rubber Helper Spring Kit
$427.25
Free shipping
Suspension Rubber Helper Spring fits 2017-2019 Ford F-250 Super Duty,F-350 Super
item 30 Suspension Rubber Helper Spring fits 2017-2019 Ford F-250 Super Duty,F-350 Super
$433.46
Free shipping
Timbren Fits 2015 Ford F-450 Super Duty Rear Suspension Enhancement System
item 31 Timbren Fits 2015 Ford F-450 Super Duty Rear Suspension Enhancement System
$468.32
+$9.99 shipping
listings for this product

Ratings and Reviews

Learn more
4.7
3 product ratings
  • 2 users rated this 5 out of 5 stars
  • 1 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • by trcolebuilding2012
    May 08, 2025

    great product

    super easy to install. just picked up our new 40 ft toyhauler today. 3 hour drive home and didn't even know the camper was behind me

    Verified purchase: YesCondition: New

  • by oemautoaccesories
    Jan 19, 2021

    Excellent replacement for airbags

    Excellent and easy to install.

    Verified purchase: YesCondition: New

  • by polrzr900
    Sep 02, 2025

    They definitely help, but, rough ride.

    They definitely help, but, rough ride.

    Verified purchase: YesCondition: New

Best Selling in Suspension Component Replacement Kits

Save on Suspension Component Replacement Kits

Trending price is based on prices over last 90 days.

You may also like