2 Rubber Springs
You'll be getting 2 hollow rubber springs & mounting hardware.Timbren
Suspension Enhancement System Rear Kit
1983-1989 International F2276 S
$733.75
$863.24
Estimated Delivery in 3-4 weeks
Timbren
Suspension Enhancement System Rear Kit
1983-1989 International F2276 S
$733.75
$863.24
Estimated Delivery in 3-4 weeks
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Part Numbers & Details
Timbren Lifetime Warranty
Timbren SES products come with a Lifetime Warranty which includes Defects in material and workmanship and Damaged parts under normal use and service.TIMBREN shall be entitled to make its owninspection to determine the validity of the claim. TIMBREN shall not be liable nor warranty the product in the event of alteration, misuse, overload, negligence or damage caused by others.Important Fitment Note
Weight Capacity 10000 lbs.Important Fitment Note
w/ Hendrickson RS/RT/RTE AxleKit Contents
2 Hollow rubber springs;2 mounting brackets;2 mounting cups & All necessary hardwareProduct Highlights
The enhancement system eliminates vehicle squatting & sagging and improves handlingSpecifications
| Part Number | Item | Quantity |
|---|---|---|
| IHROA1 | Suspension Enhancement System Rear | 1 |
Product Details
Each laser cut piece of steel is precision bent and powder-coated to ensure a quality fit. We’ve engineered our hollow rubber springs to deliver a progressive spring rate. In other words, the more weight that pushes down on the rubber springs the harder they work to prevent rear end sag. Whether you’re pulling a trailer or carrying a heavy load in the bed of your truck, our hollow rubber springs adjust automatically to keep the vehicle level at all times.This SES Suspension Upgrade replaces the jounce stop on the frame. Its unique design ensures superb ride quality – loaded or unloaded. (There should be a ½” to 1 ½” gap between rubber spring and axle to ensure unloaded ride quality.) Unlike other auxiliary spring systems, the SES Suspension Upgrade guarantees the best of both worlds.
Compatibility List
| Year | Make | Model | Drive | Position | Lift |
| 1989 | International | F2276 S | Factory | ||
| 1988 | International | F2276 S | Factory | ||
| 1987 | International | F2276 S | Factory | ||
| 1986 | International | F2276 S | Factory | ||
| 1985 | International | F2276 S | Factory | ||
| 1984 | International | F2276 S | Factory | ||
| 1983 | International | F2276 S | Factory |
Timbren handles their warranty claims directly; if you encounter a product defect please reach out to Timbren directly.
For more information: View the Shock Surplus Warranty Policy.
Shipping Info
Free Shipping on most orders to the lower 48 U.S. states. Truck freight items (over 100 lbs) and custom orders require a separate shipping quote.
- Applies to items like axles, leaf springs, and long-travel kits.
- No international shipping on freight items — only to U.S.-based freight forwarders.
- Worldwide shipping available: Canada, Europe, UAE, Australia, and most of Asia.
Contact us for an international shipping quote.
Returns & Exchanges
30-Day Return Policy — Items must be new, unused, uninstalled, and include all original hardware.
- No restocking fees for exchanges or gift card credit.
- 10% restocking fee on refunds, returns cost us real money, so the 10% helps keep the lights on.
- Installed, damaged, or dirty parts cannot be returned.
- Any returns missing hardware or miscellaneous items, the return will be denied and returned to the buyer at the buyer's expense.
Return Shipping Responsibility
CHECKOUT+ Package and Order Protection plan provides prepaid return labels for any returned packages, this fee varies by product.
- Our mistake (misboxed, wrong item, damaged): We cover the cost of return shipping.
- Buyer mistake (wrong item ordered, fitment error, changed mind): Return shipping is the buyer's responsibility - unless CHECKOUT+ Package Protection has been purchased.
- Under 50 lbs: Discounted carrier rate
- Over 50 lbs: Discounted carrier rate + $25 oversize fee
Refunds
Refunds are issued within 5–7 business days of receiving your return.
- Funds typically post to your account in 1–3 business days depending on your payment method.
- There is a 10% restocking fee on all refunds. We don’t get our original shipping, labor, or transaction fees back — so the 10% restocking fee keeps the lights on.
- You will receive an email once your refund is processed.
International Orders
- All international orders are final sale.
- Returns via freight forwarders only accepted if the product hasn’t left the U.S.
- Import taxes, duties, and other possible import-related fees are the buyer’s responsibility and not included in our shipping charges.
- We are not responsible for goods once exported outside the U.S.
Product Details
Whether you want to upgrade, add a reservoir, or find something more affordable, contact us with any questions!
Part Numbers & Details
View full product specifications
Warranty
View warranty coverage
Shipping & Returns
Free shipping within the lower 48 United States
