Peak Suspension 2.5" DSC Coilovers Trek Kit | 2010–2023 4Runner, GX460 & FJ Cruiser

Factory struts and light-duty 2.0" shock bodies on mid-size Toyota and Lexus 4WDs quickly overheat and break down when tackling washboard gravel, heavy gear loads, or technical trail descents. The Peak Suspension 2.5" DSC Coilovers Trek Kit replaces stock dampening with race-inspired 2.5" shock bodies, external reservoirs, and dual-speed compression adjustment built to handle sustained off-road abuse. Engineered as a direct bolt-on system, this kit includes tubular upper control arms to restore alignment geometry and maintain full wheel travel on the trail. Key Features Dual-Speed Compression (DSC) Control: Independent high-speed and low-speed adjustment dials allow you to tune specifically for sharp, fast-edge trail chatter versus low-speed body roll during cornering or heavy braking. High-Volume Thermal Endurance: Large 2.5” shock bodies and remote oil reservoirs hold significantly more hydraulic fluid, keeping operating temperatures controlled to eliminate shock fade on long, rough forest service runs. Corrected Alignment Geometry: Includes tubular upper control arms engineered to restore proper caster and camber after lifting, preserving high-speed highway stability and preventing ball joint binding at full extension. Precision Thread Protection: Features a pinch-bolt coil collar design that securely locks in front ride height adjustments without galling or damaging the aluminum body threads. Vehicle-Specific Valving: Internal shim stacks are calibrated specifically for the dynamic motion ratios and front-end spring weights of 5th Gen 4Runners, GX460s, and late FJ Cruisers. What’s Included (2) Peak 2.5" Front DSC Remote-Reservoir Coilovers (2) Peak 2.5" Rear DSC Remote-Reservoir Shocks (1) Pair Peak Tubular Upper Control Arms with Heavy-Duty Ball Joints (2) Front Reservoir Mounting Brackets (2) Rear Reservoir Mounting Brackets All required mounting hardware and frame brackets Pro Tip: If you are running this kit on a Lexus GX460 or a KDSS-equipped 5th Gen 4Runner, pay extra attention to rear coil spring seating and sway bar link positioning during installation. Adding sway bar drop brackets or KDSS extension mounts ensures you achieve full downward articulation without binding the sway bar linkages on the trail.