ICON K53157 RXT Stage 3 Rear Suspension System for 2007-2021 Toyota Tundra

Through an accelerated testing process dubbed the “ICON1K” R&D program, ICON has spent over a year pushing the Tundra to off-road extremes to identify limiting factors in OE components and further extrapolate performance out of this vehicle. In a push to provide unparalleled ride quality and vehicle dynamics for everything from high-speed desert running to off the grid expedition, the RXT Rear Suspension System was born. The RXT Rear Suspension System is a combination of an all-new ICON multi-rate leaf spring, a hydraulic rear bump stop kit, and three RXT-specific 2.5 Aluminum Series rear shock options. Installation of this system replaces the aforementioned “limiting factors” and completely redefines the potential of the 2007-2021 Toyota Tundra with a 20% increase in wheel travel and the ability to adjust the leaf spring rate to compensate for varying vehicle setups. 2007-2021 TOYOTA TUNDRA RXT STAGE 3 SYSTEM Recommended Aftermarket Tires: 35" x 12.50" (Larger tires may fit but fender trimming and modifications will be required.)

• ICON RXT Rear Shock: 2.5 Aluminum Series shocks feature one-piece impact extruded aluminum cylinders for excellent corrosion resistance and consistent finish
• ICON RXT Multi-Rate Leaf Spring: Potential for increased wheel travel when used with RXT shock without sacrificing up-travel (up to 20% over stock)
• ICON Hydraulic Rear Bump Stop Kit: “ICON 1K” tested under rigorous off-road conditions to validate tune, performance, strength, and durability
• ICON RXT Multi-Rate Leaf Spring: “ICON 1K” tested under rigorous off-road conditions to validate tune, performance, strength, and durability
• ICON RXT Rear Shock: 10” aluminum reservoirs provide generous oil and nitrogen volume for consistent damping as shock temperature increases
• ICON RXT Rear Shock: “ICON 1K” tested under rigorous off-road conditions to validate tune, performance, strength, and durability
• ICON RXT Rear Shock: Unique side-mounted lower eyelet allows for increased travel while utilizing factory mounting location
• ICON Hydraulic Rear Bump Stop Kit: Direct bolt-in to OEM bump stop location makes for an easy and straightforward install
• ICON Hydraulic Rear Bump Stop Kit: 2.5” travel bump stop reduces rear end ‘kick’ and improves overall performance
• ICON RXT Rear Shock: Omega Series two-tube bypass allows for 28 settings of compression and rebound damping adjustment
• ICON Hydraulic Rear Bump Stop Kit: Vehicle specific bump stop tune to provide smooth engagement and best ride quality
• ICON Hydraulic Rear Bump Stop Kit: Position sensitive technology exponentially increases bottom-out resistance
• ICON RXT Multi-Rate Leaf Spring: Galvanized leaf separators reduce friction and aid in corrosion resistance
• ICON RXT Multi-Rate Leaf Spring: 3 user-adjustable spring rates for unique vehicle configurations
• ICON RXT Multi-Rate Leaf Spring: Direct bolt-in to OEM spring location makes for an easy install
• ICON RXT Rear Shock: Vehicle-specific tuned shocks provide increased damping and oil volume
• ICON RXT Multi-Rate Leaf Spring: Leaf tip inserts reduce noise and increase ride comfort
• ICON RXT Multi-Rate Leaf Spring: Military wrap front eyelet for increased durability
• ICON Hydraulic Rear Bump Stop Kit: Heavy duty 1.25” CNC machined nitro steel shaft
• ICON Hydraulic Rear Bump Stop Kit: CAD plated body for maximum corrosion resistance
• ICON Hydraulic Rear Bump Stop Kit: Double sealed high pressure Schrader valve
• ICON Hydraulic Rear Bump Stop Kit: Replaceable noise-reducing striker pad
• ICON RXT Rear Shock: Shocks are fully rebuildable and revalveable
• ICON Hydraulic Rear Bump Stop Kit: Operating range of 50-250 PSI
• ICON RXT Rear Shock: Simple and straightforward installation
• ICON Hydraulic Rear Bump Stop Kit: Fully serviceable

The ICON K53157 RXT Stage 3 Rear Suspension System is engineered for 2007-2021 Toyota Tundra models seeking improved ride quality, control, and off-road capability. Developed through ICON’s rigorous ICON1K testing program, this complete rear suspension package addresses common factory limitations and is designed for demanding use ranging from high-speed desert driving to remote overland travel. The system combines ICON RXT multi-rate leaf springs, hydraulic rear bump stops, and RXT-specific 2.5 Aluminum Series rear shocks for a balanced suspension upgrade.
The adjustable multi-rate leaf springs provide three user-selectable spring rates, allowing the suspension to be tailored to different vehicle configurations, cargo loads, and expedition setups. When paired with the RXT shocks, the system can increase wheel travel by up to 20% over stock without sacrificing up-travel. Direct bolt-in installation uses the factory spring and bump stop locations, while leaf tip inserts help reduce noise and improve ride comfort. Galvanized leaf separators reduce friction and support long-term corrosion resistance, and military-wrap front eyelets add durability.
The included hydraulic rear bump stop kit uses a vehicle-specific tune for smoother engagement and improved bottom-out resistance. Its position-sensitive design, 2.5-inch travel, serviceable construction, corrosion-resistant body, and heavy-duty shaft support dependable performance under repeated off-road impacts. The RXT rear shocks feature impact-extruded aluminum cylinders for corrosion resistance, 10-inch aluminum reservoirs for consistent damping as temperatures rise, and a side-mounted lower eyelet that increases travel while retaining the factory mounting location. Omega Series two-tube bypass technology provides 28 compression and rebound adjustment settings, and the shocks are fully rebuildable and revalveable.
This ICON RXT Stage 3 system is recommended for use with 35-inch by 12.50-inch tires. Larger tires may require fender trimming and additional vehicle modifications. Professional installation is recommended to ensure proper setup, spring-rate selection, bump stop adjustment, and shock tuning.

Features:

• Vehicle Fitment: Designed for 2007-2021 Toyota Tundra models

• Suspension Configuration: Complete rear RXT Stage 3 system with multi-rate leaf springs, hydraulic bump stops, and 2.5 Aluminum Series rear shocks

• Wheel Travel: Provides up to 20% more wheel travel than stock when used with the RXT shocks

• Leaf Spring Adjustment: Three user-selectable spring rates accommodate different vehicle configurations and loads

• Leaf Spring Installation: Direct bolt-in design uses the factory rear spring location

• Leaf Spring Durability: Military-wrap front eyelets, galvanized leaf separators, and leaf tip inserts support durability, corrosion resistance, and quieter operation

• Hydraulic Bump Stops: Position-sensitive design improves bottom-out resistance and reduces rear-end kick

• Bump Stop Travel: 2.5 inches of hydraulic travel with a vehicle-specific tune

• Bump Stop Installation: Direct bolt-in design uses the factory bump stop location

• Bump Stop Construction: Heavy-duty 1.25-inch CNC-machined nitro steel shaft and corrosion-resistant plated body

• Bump Stop Serviceability: Fully serviceable design with a double-sealed high-pressure Schrader valve and replaceable noise-reducing striker pad

• Bump Stop Pressure Range: Operating range from 50 to 250 PSI

• Shock Construction: One-piece impact-extruded aluminum cylinders provide corrosion resistance and consistent finish

• Shock Reservoirs: 10-inch aluminum reservoirs provide increased oil and nitrogen volume for consistent damping

• Shock Adjustability: Omega Series two-tube bypass provides 28 compression and rebound damping settings

• Shock Design: Side-mounted lower eyelet increases travel while retaining the factory mounting location

• Shock Serviceability: Fully rebuildable and revalveable shocks

• Off-Road Testing: Components were validated through ICON1K testing under rigorous off-road conditions

• Recommended Tires: 35-inch by 12.50-inch tires; larger tires may require fender trimming and modifications

Compatible With
2007 Toyota Tundra
2008 Toyota Tundra
2009 Toyota Tundra
2010 Toyota Tundra
2011 Toyota Tundra
2012 Toyota Tundra
2013 Toyota Tundra
2014 Toyota Tundra
2015 Toyota Tundra
2016 Toyota Tundra
2017 Toyota Tundra
2018 Toyota Tundra
2019 Toyota Tundra
2020 Toyota Tundra
2021 Toyota Tundra