ICON's 2" Rear Leaf Expansion Pack provides increased suspension lift and better ride quality for lifted 2008-2024 F-250/F-350 Super Duty pickup trucks. The Expansion Pack is designed to replace and improve the center leaves of the stock leaf spring pack while retaining the factory main leaf. This makes the Expansion Pack both cost-effective and an easier installation as it doesn't require complete removal of the leaf spring main leaf from the spring hanger and shackle. The additional leaves included in the pack are designed to optimize ride quality and reduce axle wrap compared to lift blocks. The design also shifts the overload transition point to improve small bump compliance.. TECH NOTE: When installing in conjunction with 2.5-3" front lift ICON recommends replacing OE rear blocks with 1" rear blocks (ICON part # 191201) and 12" U-bolts (ICON part #s 37004 or 67004, depending on year). 2" bump stop spacers will also be required (ICON part # 61002). Most F-250s will net .5" of rear lift over stock while most F-350s will net rear ride height .5" lower than stock.. The 2" Leaf Expansion Pack provides increased suspension lift and better ride quality for Ford F-250/F-350 trucks. The expansion pack optimizes ride quality by softening the rear spring rate and reduces axle wrap compared to lift blocks.. Recommended Aftermarket Tires (1" rear blocks): 35" x 12.50" (Larger tires may fit but fender trimming and modifications will be required.). TECH NOTE: Depending on year and block configuration installer must use the appropriate U-bolts (not included in kit). APPLICATION NOTE #155: Requires recalibration of Advanced Driver Assistance Systems (ADAS) after install. Recommended Aftermarket Wheels: ICON Alloys - 18x9" w/ 5.25” Backspace / 6mm Offset. Recommended Aftermarket Wheels: ICON Alloys - 20x9" w/ 5.25” Backspace / 6mm Offset. TECH NOTE: Sold as single leaf spring expansion pack (qty of 2 required per vehicle). Recommended Aftermarket Wheels: ICON Alloys - 17x8.5" w/ 5” Backspace / 6mm Offset. Moves overload transition point further away for better small bump compliance. ICON 2008+ Ford F250/F350 Super Duty 2in Rear Leaf Spring Expansion Pack. Retains factory main leaf for easier installation than a full leaf pack. TECH NOTE: Provides 2" of rear lift when installed with OE rear blocks. Provides 2” of rear lift when installed with OE rear blocks. Recommended Aftermarket Tires (OE rear blocks): 37" x 12.50". APPLICATION NOTE #151: Fits single rear wheel models only. Offers improved ride quality compared to OE leaf springs. 08-25 F250/F350 LEAF SPRING EXPANSION PACK. Reduces axle wrap compared to lift blocks. More cost effective than a full leaf pack. Factory Wheels & Tires Fitment: Yes. LEAF EXPANSION PACK. Leaf Spring. 168507

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