Metal-tech 4×4 Next Gen dual rate Long Travel heavy rear springs.
Since Toyota does not capture the coil spring the suspension travel is limited to the free height of the spring (ie the total length of the spring) before the spring will fall out of the coil buckets. By creating the dual rate spring we have the bottom half the spring do all the suspension work and the top half stays fully collapsed at ride height. When the suspension starts to cycle downwards the top half of the spring starts to open up allowing for greater suspension travel over a standard 2″ lift spring.
We have taken the knowledge and performance we have gained over the past 5yrs of our long travel systems and wrapped it into the single best performing NextGen spring to date. We have increased the available height by 1″ over our first generation spring. The NextGen spring has increased load capacity similar to our previous HD springs, however it maintains the ride and comfort of our previous Med spring even with the lightest loaded trucks due to the new dual rate build.
Now Right and Left specific. These are the only rear springs on the market for the GX470 and Prado 120 platform trucks that are engineered as LEFT and RIGHT rear springs. Specifically engineered for North America Left hand drive vehicles each spring has a different spring rate to counter the common lean most Prado 120 platform trucks experience when lifted. This is especially helpful for heavily loaded trucks with rear bumper systems, drawer systems etc. However still very visible if not more so with lightly loaded trucks. The drivers spring is marked 4005-D and packs a 3% difference over the passenger side.
NextGen Spring Specs:
- Free Length – 19.25 inches
- Top Coil Rate – 104 lbs
- Bottom Coil Rate – 300lbs
- Total lift height 3 inches