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These are 2.0 (2inch dia as opposed to 2.5inch...nothing to do with the amount of lift) Radflo coilovers for the Frontier. These are a direct replacement for the stock spring/shock combo. Simply undo the 4 bolts that hold your stock strut in place and bolt this unit in for a HUGE improvement in ride quality and handling. These coilovers offer a 25% increase in wheel travel over the stock shocks when used with PRG or SPC upper a-arms and there will be no coil bucket/uca contact at any height adjustment. The ride height can be varied from stock up to 3.5" lift, but 3" typically rides best. You can experiment using the wrench provided to see what height you like best. These coilovers come as a default with 600lb springs (what we consider best for a stock 4wd). but can be ordered with 500, 550, 650, 700, and 750lb springs. Rule of thumb is as follows; 
500lb-2wd 4cyl
550lb-2wd 6cyl
600lb-4wd stock bumper
650lb-4wd aftermarket steel bumper (Heafty, Shrock, etc)
700lb-4wd steel bumper AND winch 
750lb-4wd steel bumper AND large winch w/ steel rope
Please specify rate that you desire in the comment box when ordering, if you don't we will call you. Or just call us if you have questions. Please note that being one spring rate off will NOT hurt the ride quality. Typically a change of 10% is the minimum you can feel. There is also just personal preference, some people like a soft ride, others firm...the springs will determine brake dive and body roll much more than bump adsorption or ride quality. Also, going too soft will NOT give you an amazing amount of flex (articulation) over a slightly stiffer spring. 
Some commonly asked questions;
-How tall can I lift? well, there will be more threads on the body than you can use...you can adjust to about 3+ inches of lift but the ride will suck! Because of the suspension geometry, not the coilovers, we suggest about 2" lift for best ride/performance when keeping the stock upper a-arms. Moderation is the key here.
-Is a 2.5" dia coilover better than the 2.0? Yes and no. Our simple rule-of-thumb is that if your tires are coming off the ground from going fast, the 2.5" will work better. So 95% of the time, the 2.0 are great. They are also about $200 less expensive and offer more spring rate options.
-How often do these need to be serviced/rebuilt? About every 5-7 years is our opinion. There are upper and lower bearings that may need to be replaced sooner and these are just a few $$ and easily changed with basic hand tools.
-Can I run these with PRG or SPC arms? Yes, you kinda have too. You could run these UNTIL you get the arms but you will get coilobucket contact until the arms are installed.
-Can I add my 2+ inch leveling kit to these and get 5+ inches lift? NO, NO, NO!!! If it were that easy we'd make the shocks longer. If you try to run a leveling spacer on these, you will lose lots of wheel travel and have major suspension binding issues....and it still won't be 5" of lift.
-These are not recommended to be run with either the Calmini or Fabtech lifts.
-Will these work with a Titan Swap? Yes, but not as well as a 2.5" or the 2.0" titan-swap specific coilovers. I this application a 1.5" lift spacer CAN be used but only in conjunction with our PRG Titan upper a-arms....please call at this point as there are many combinations being used/tried in the Titan Swap arena and even more threads on the web with bad information.
-How do these compare with the Bilstein 5100 or 5100/TJM combo? These are longer than the others to take advantage of the clearance afforded by the arms. you could add a spacer to those shocks at a loss of compression travel.

 These are often drop shipped directly from Radflo to speed delivery. International orders can take much, much longer and there will be add'l shipping required.
Note, we can do custom colors on the springs, but it adds $80 and about 1-4 weeks on delivery. Please call at this point.

Radflo Xterra/Frontier 2.0 IFP Coilovers for UCA

$916.00Price
Spring Rate

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