Description
Skyjacker Leaf Spring 2004-2007 Ford F-350 Super Duty
Softride(R) springs use only American steel and the individual leafs of each spring are shot-peened with hard steel pellets at very high velocities. This shot-peening compresses the surface of the steel thereby increasing the tensile strength of the spring. Without this shot-peening procedure, the maximum wheel travel and ride quality could not be achieved without sacrificing the life of the spring. Softride(R) springs use bolt style spring clips, eliminating friction. Other spring designs use the c in. style bend clips which bend tightly over the spring leafs causing binding and friction. Skyjacker(R) Softride(R) springs taper over the entire length of the leaf creating more flex at the leaf ends. This tapering distributes loads more evenly over a greater area and reduces the tendency for one leaf to dig into the leaf above it.
Additional Information
4in.REAR SPRING; 99-07 F2/350
| Additional Application Notes | |
|---|---|
| • Lift Height 4 in.; Single | |
| • Lift Height 4 in.; Single Factory Block Can Be Removed To Reduce Lift 2 in. | |
These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.
This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.
Kit option/s:
| Thumb | SKU | Kit Title |
|---|---|---|
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skyF5401KS | Skyjacker 4"SYSTEM,05>F250 4WD W/GAS (1x skyF540, 2x skyFR94S, 1x skyF5451S) |
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skyF54024KS | Skyjacker 4"SYS,05 F250 4WD/GAS W/LKS (1x skyF540, 2x skyFR94S, 1x skyF5451S, 1x skyF58484LU) |
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skyF54024KS3 | Skyjacker 4"SYS,05 F350 4WD/GAS W/LKS (1x skyF540, 2x skyFR94S, 1x skyF5451SH, 1x skyF58484LU) |
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skyF5451KS | Skyjacker 4"SYSTEM,05F250 4WD W/DIESL (2x skyFR94S, 1x skyF5451S, 1x skyF545V) |
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skyF54524KS | Skyjacker 4"SYS,05 F250 4WD/DSL W/LKS (2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 1x skyF545V) |
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skyF54524KS3 | Skyjacker 4"SYS,05 F350 4WD/DSL W/LKS (2x skyFR94S, 1x skyF5451SH, 1x skyF58484LU, 1x skyF545V) |
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skyF9402MKS | Skyjacker 4"SYS,2000 F250/350 V8 ONLY (2x skyF940S, 2x skyFR94S, 1x skyF9402MS) |
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skyF9403MKS | Skyjacker 4"SYS,03/99> F250 SD V8,V10 (2x skyF940S, 2x skyFR94S, 1x skyF9403MS) |
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skyF9452MKS | Skyjacker 4"SYS,2000 F2/350 V10/DIESL (2x skyF945S, 2x skyFR94S, 1x skyF9402MS) |
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skyF9453MKS | Skyjacker 4"SYS,03/99>F250SD W/DIESEL (2x skyF945S, 2x skyFR94S, 1x skyF9403MS) |
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skyF960MKS | Skyjacker 6"SYSTEM 99F250 SD W/V8,V10 (2x skyF960S, 2x skyFR94S, 1x skyF960MS) |
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skyF965MKS | Skyjacker 6"SYSTEM 99F250 SD W/DIESEL (2x skyF965S, 2x skyFR94S, 1x skyF960MS) |
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skyFE40MKS | Skyjacker 4"SYS,00-03 EXCURSIONV8,V10 (2x skyF920S, 2x skyFR94S, 1x skyF9402MS) |
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skyF5401KS-B | Skyjacker 4"SYSTEM,05>F250 4WD W/GAS (1x skyF540, 2x skyFR94S, 1x skyF5451S, 2x skyB8560, 2x skyB8592) |
 |
skyF5401KS-H | Skyjacker 4"SYSTEM,05>F250 4WD W/GAS (1x skyF540, 2x skyFR94S, 1x skyF5451S, 2x skyH7060, 2x skyH7092) |
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skyF5401KS-M | Skyjacker 4"SYSTEM,05>F250 4WD W/GAS (1x skyF540, 2x skyFR94S, 1x skyF5451S, 2x skyM9560, 2x skyM9592) |
|
skyF5401KS-N | Skyjacker 4"SYSTEM,05>F250 4WD W/GAS (1x skyF540, 2x skyFR94S, 1x skyF5451S, 2x skyN8060, 2x skyN8092) |
|
skyF54024KS-B | Skyjacker 4"SYS,05-07F250,GAS,4LK,BLK (1x skyF540, 2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 2x skyB8560, 2x skyB8592) |
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skyF54024KS-H | Skyjacker 4"SYS,05-07F250,GAS,4LK,HYD (1x skyF540, 2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 2x skyH7060, 2x skyH7092) |
|
skyF54024KS-M | Skyjacker 4"SYS,05-07F250,GAS,4LK/M95 (1x skyF540, 2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 2x skyM9560, 2x skyM9592) |
|
skyF54024KS-N | Skyjacker 4"SYS,05-07F250,GAS,4LK,NIT (1x skyF540, 2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 2x skyN8060, 2x skyN8092) |
|
skyF5451KS-B | Skyjacker 4"SYSTEM,05F250 4WD W/DIESL (2x skyFR94S, 1x skyF5451S, 1x skyF545V, 2x skyB8560, 2x skyB8592) |
|
skyF5451KS-H | Skyjacker 4"SYSTEM,05F250 4WD W/DIESL (2x skyFR94S, 1x skyF5451S, 1x skyF545V, 2x skyH7060, 2x skyH7092) |
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skyF5451KS-M | Skyjacker 4"SYSTEM,05F250 4WD W/DIESL (2x skyFR94S, 1x skyF5451S, 1x skyF545V, 2x skyM9560, 2x skyM9592) |
|
skyF5451KS-N | Skyjacker 4"SYSTEM,05F250 4WD W/DIESL (2x skyFR94S, 1x skyF5451S, 1x skyF545V, 2x skyN8060, 2x skyN8092) |
|
skyF54524KS-B | Skyjacker 4"SYS,05-07F250,DIE,4LK,BLK (2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 1x skyF545V, 2x skyB8560, 2x skyB8592) |
 |
skyF54524KS-H | Skyjacker 4"SYS,05-07F250,DIE,4LK,HYD (2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 1x skyF545V, 2x skyH7060, 2x skyH7092) |
|
skyF54524KS-M | Skyjacker 4"SYS,05-07F250,DIE,4LK/M95 (2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 1x skyF545V, 2x skyM9560, 2x skyM9592) |
|
skyF54524KS-N | Skyjacker 4"SYS,05-07F250,DIE,4LK,HYD (2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 1x skyF545V, 2x skyN8079, 2x skyN8092) |
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skyF9402MKS-B | Skyjacker 4"SYS,2000 F250/350 V8 ONLY (2x skyF940S, 2x skyFR94S, 1x skyF9402MS, 2x skyB8579, 2x skyB8541) |
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skyF9402MKS-H | Skyjacker 4"SYS,2000 F250/350 V8 ONLY (2x skyF940S, 2x skyFR94S, 1x skyF9402MS, 2x skyH7079, 2x skyH7041) |
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skyF9402MKS-M | Skyjacker 4"SYS,2000 F250/350 V8 ONLY (2x skyF940S, 2x skyFR94S, 1x skyF9402MS, 2x skyM9579, 2x skyM9541) |
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skyF9402MKS-N | Skyjacker 4"SYS,2000 F250/350 V8 ONLY (2x skyF940S, 2x skyFR94S, 1x skyF9402MS, 2x skyN8079, 2x skyN8041) |
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skyF9403MKS-B | Skyjacker 4"SYS,03/99> F250 SD V8,V10 (2x skyF940S, 2x skyFR94S, 1x skyF9403MS, 2x skyB8579, 2x skyB8541) |
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skyF9403MKS-H | Skyjacker 4"SYS,03/99> F250 SD V8,V10 (2x skyF940S, 2x skyFR94S, 1x skyF9403MS, 2x skyH7079, 2x skyH7041) |
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skyF9403MKS-M | Skyjacker 4"SYS,03/99> F250 SD V8,V10 (2x skyF940S, 2x skyFR94S, 1x skyF9403MS, 2x skyM9579, 2x skyM9541) |
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skyF9403MKS-N | Skyjacker 4"SYS,03/99> F250 SD V8,V10 (2x skyF940S, 2x skyFR94S, 1x skyF9403MS, 2x skyN8079, 2x skyN8041) |
|
skyF9452MKS-B | Skyjacker 4"SYS,2000 F2/350 V10/DIESL (2x skyF945S, 2x skyFR94S, 1x skyF9402MS, 2x skyB8579, 2x skyB8541) |
|
skyF9452MKS-H | Skyjacker 4"SYS,2000 F2/350 V10/DIESL (2x skyF945S, 2x skyFR94S, 1x skyF9402MS, 2x skyH7079, 2x skyH7041) |
|
skyF9452MKS-M | Skyjacker 4"SYS,2000 F2/350 V10/DIESL (2x skyF945S, 2x skyFR94S, 1x skyF9402MS, 2x skyM9579, 2x skyM9541) |
 |
skyF9452MKS-N | Skyjacker 4"SYS,2000 F2/350 V10/DIESL (2x skyF945S, 2x skyFR94S, 1x skyF9402MS, 2x skyN8079, 2x skyN8041) |
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skyF9453MKS-B | Skyjacker 4"SYS,03/99>F250SD W/DIESEL (2x skyF945S, 2x skyFR94S, 1x skyF9403MS, 2x skyB8579, 2x skyB8541) |
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skyF9453MKS-H | Skyjacker 4"SYS,03/99>F250SD W/DIESEL (2x skyF945S, 2x skyFR94S, 1x skyF9403MS, 2x skyH7079, 2x skyH7041) |
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skyF9453MKS-M | Skyjacker 4"SYS,03/99>F250SD W/DIESEL (2x skyF945S, 2x skyFR94S, 1x skyF9403MS, 2x skyM9579, 2x skyM9541) |
|
skyF9453MKS-N | Skyjacker 4"SYS,03/99>F250SD W/DIESEL (2x skyF945S, 2x skyFR94S, 1x skyF9403MS, 2x skyN8079, 2x skyN8041) |
|
skyF960MKS-B | Skyjacker 6"SYSTEM 99F250 SD W/V8,V10 (2x skyF960S, 2x skyFR94S, 1x skyF960MS, 2x skyB8560, 2x skyB8579) |
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skyF960MKS-H | Skyjacker 6"SYSTEM 99F250 SD W/V8,V10 (2x skyF960S, 2x skyFR94S, 1x skyF960MS, 2x skyH7079, 2x skyH7060) |
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skyF960MKS-M | Skyjacker 6"SYSTEM 99F250 SD W/V8,V10 (2x skyF960S, 2x skyFR94S, 1x skyF960MS, 2x skyM9560, 2x skyM9579) |
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skyF960MKS-N | Skyjacker 6"SYSTEM 99F250 SD W/V8,V10 (2x skyF960S, 2x skyFR94S, 1x skyF960MS, 2x skyN8079, 2x skyN8060) |
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skyF965MKS-B | Skyjacker 6"SYSTEM 99F250 SD W/DIESEL (2x skyF965S, 2x skyFR94S, 1x skyF960MS, 2x skyB8560, 2x skyB8579) |
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skyF965MKS-H | Skyjacker 6"SYSTEM 99F250 SD W/DIESEL (2x skyF965S, 2x skyFR94S, 1x skyF960MS, 2x skyH7079, 2x skyH7060) |
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skyF965MKS-M | Skyjacker 6"SYSTEM 99F250 SD W/DIESEL (2x skyF965S, 2x skyFR94S, 1x skyF960MS, 2x skyM9560, 2x skyM9579) |
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skyF965MKS-N | Skyjacker 6"SYSTEM 99F250 SD W/DIESEL (2x skyF965S, 2x skyFR94S, 1x skyF960MS, 2x skyN8079, 2x skyN8060) |
 |
skyFE40MKS-B | Skyjacker 4"SYS,00-03 EXCURSIONV8,V10 (2x skyF920S, 2x skyFR94S, 1x skyF9402MS, 2x skyB8558, 2x skyB8534) |
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skyFE40MKS-H | Skyjacker 4"SYS,00-03 EXCURSIONV8,V10 (2x skyF920S, 2x skyFR94S, 1x skyF9402MS, 2x skyH7058, 2x skyH7034) |
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skyFE40MKS-M | Skyjacker 4"SYS,00-03 EXCURSIONV8,V10 (2x skyF920S, 2x skyFR94S, 1x skyF9402MS, 2x skyM9558, 2x skyM9534) |
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skyFE40MKS-N | Skyjacker 4"SYS,00-03 EXCURSIONV8,V10 (2x skyF920S, 2x skyFR94S, 1x skyF9402MS, 2x skyN8058, 2x skyN8034) |
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skyFR94 | Skyjacker 4"REAR SPGS 99F2/350 S-DUTY (2x skyFR94S) |
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skyF54024KS3-XM | Skyjacker 05-07 Ford F-350 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (1x skyF540, 2x skyFR94S, 1x skyF5451SH, 1x skyF58484LU, 2x skyM2060, 2x skyM2092) |
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skyF54024KS-XM | Skyjacker 05-07 Ford F-250 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (1x skyF540, 2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 2x skyM2060, 2x skyM2092) |
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skyF54524KS3-XM | Skyjacker 05-07 Ford F-350 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (2x skyFR94S, 1x skyF5451SH, 1x skyF58484LU, 1x skyF545V, 2x skyM2060, 2x skyM2092) |
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skyF54524KS-XM | Skyjacker 05-07 Ford F-250 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (2x skyFR94S, 1x skyF5451S, 1x skyF58484LU, 1x skyF545V, 2x skyM2060, 2x skyM2092) |
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skyF5451KS3-XM | Skyjacker 05-07 Ford F-350 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (2x skyFR94S, 1x skyF5451SH, 1x skyF545V, 2x skyM2079, 2x skyM2092) |
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skyF5401KS3-XM | Skyjacker 05-07 Ford F-350 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (1x skyF540, 2x skyFR94S, 1x skyF5451SH, 2x skyM2060, 2x skyM2092) |
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skyF5401KS-XM | Skyjacker 05-07 Ford F-250 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (1x skyF540, 2x skyFR94S, 1x skyF5451S, 2x skyM2060, 2x skyM2092) |
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skyF5451KS-XM | Skyjacker 05-07 Ford F-250 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (2x skyFR94S, 1x skyF5451S, 1x skyF545V, 2x skyM2060, 2x skyM2092) |
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skyF9402MKS-XM | Skyjacker 00-04 Ford F-250 4 In Suspension Lift Kit W/ Adx M2.0 Alum Monotube Shocks (2x skyF940S, 2x skyFR94S, 1x skyF9402MS, 2x skyM2050, 2x skyM2079) |
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skyF9403MKS-XM | Skyjacker 99 Ford F-250 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (2x skyF940S, 2x skyFR94S, 1x skyF9403MS, 2x skyM2050, 2x skyM2079) |
|
skyF9452MKS-XM | Skyjacker 00-2004 Ford F-250 In Suspension Lift Kit W/ Adx M2.0 Alum Monotube Shocks (2x skyF945S, 2x skyFR94S, 1x skyF9402MS, 2x skyM2050, 2x skyM2079) |
|
skyF9453MKS-XM | Skyjacker 99 Ford F-250 4 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (2x skyF945S, 2x skyFR94S, 1x skyF9403MS, 2x skyM2050, 2x skyM2079) |
|
skyF960MKS-XM | Skyjacker 99 Ford F-250 6 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (2x skyF960S, 2x skyFR94S, 1x skyF960MS, 2x skyM2050, 2x skyM2079) |
|
skyF965MKS-XM | Skyjacker 99 Ford F-250 6 In Suspension Lift Kit With Adx M2.0 Aluminum Monotube Shocks (2x skyF965S, 2x skyFR94S, 1x skyF960MS, 2x skyM2050, 2x skyM2079) |
Data: v2 - Desc: v4.2 - Upd: 2026-11-09 02:38:07
Features
- Constructed As Progressive Multileaf Packs
- Limited Lifetime Warranty
- Load Capacity Will Be Equal or Greater Than OE
- Made With American Steel
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Description: | SOFTRIDE REAR 4IN. 99-07 SD |
| Lift/Drop Height: | 4 in. |
| Part Number: | skyFR94S |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Skyjacker, Skyjacker Suspensions |
| StreetFX SKU | skyFR94S |
| SFX Item ID | 4327009 |
| Accounting SKU | sky-FR94S |
| Manufacturer SKU | FR94S |
| Manufacturer UPC | 803696133775 |
| Alternative References | FR94S, SJA-FR94S |
Lift Spring, Leaf-Style, Rear, Black, Ford, Pickup, SUV, Each
Softride lift leaf springs from Skyjacker are designed to give you all of the rugged off-road handling you need, while providing the smooth street riding characteristics that you demand. They're constructed as multi-leaf packs, so their GVW rating and load-carrying capacity will be equal to or greater than those of the vehicle's original equipment. Only high-quality American steel is used in their construction, so you can be assured that you're getting a dependable product.
| Product Attributes | |
|---|---|
| Brand | Skyjacker Suspensions |
| Manufacturer's Part Number | FR94S |
| Part Type | Leaf Springs |
| Product Line | Skyjacker Softride Lift Leaf Springs |
| UPC | 803696133775 |
| Ride Height | Lifted |
| Ride Height Note | Additional ride height information may be available for your vehicle, please refer to the app tab. |
| Spring Positioning | Rear |
| Rear Spring Raised Amount Range (in.) | 4.00 in. |
| Progressive Rate Spring | Yes |
| Bushings Included | Yes |
| Bushing Material | Rubber |
| Bushing Color | Black |
| Spring Finish | Black |
| Quantity | Sold individually. |
| Manufacturer Attributes | |
|---|---|
| Lift/Drop Height | 4 in. |
| Manufacturer Designation | SOFTRIDE REAR 4IN. 99-07 SD |
| Product Class | Leaf Spring Assembly |
| Construction/Type | 4in.REAR SPRING 99-07 F2/350 |
| Product Outline | Constructed As Progressive Multileaf Packs Load Capacity Will Be Equal or Greater Than OE Made With American Steel Limited Lifetime Warranty |
| Vehicle Brief | SOFTRIDE REAR 4in. 99-07 SD |
| Market Description | Softride(R) springs use only American steel and the individual leafs of each spring are shot-peened with hard steel pellets at very high velocities. This shot-peening compresses the surface of the steel thereby increasing the tensile strength of the spring. Without this shot-peening procedure, the maximum wheel travel and ride quality could not be achieved without sacrificing the life of the spring. Softride(R) springs use bolt style spring clips, eliminating friction. Other spring designs use the c in. style bend clips which bend tightly over the spring leafs causing binding and friction. Skyjacker(R) Softride(R) springs taper over the entire length of the leaf creating more flex at the leaf ends. This tapering distributes loads more evenly over a greater area and reduces the tendency for one leaf to dig into the leaf above it. |
Compatibility
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