Technical Articles

Technical Articles

The Hyperco hydraulic spring perch - what does it do, and why do you want it?

A coil spring inherently puts significantly more pressure on one side of the spring perch than the other because of its shape. This uneven force also varies throughout the range of compression. This puts lateral force on the shock shaft which is less than ideal …

WRX & STi Sway Bars - Less is More (Added Bonus: thorough explanation of digressive valving)

Sway bars are undoubtedly a useful component of the suspension of all WRX and STi generations. With that said it’s important to understand that bigger is not always better. Large sway bars have a lot of inherent limitations, and they introduce several issues …

Loose Top Hat Nuts

When you first install height adjustable coilovers it’s pretty common to have a loose top hat nut. This is not because the nut was improperly tightened at the factory during production. We have a special clamp that holds the shaft, and every top had nut is properly torqued to the same specification before the coilovers get shipped to the customer. The reason that this can be an issue is because when you initially adjust ride height the spring can put a lot of force on the upper perch causing the nut to slightly back off …

Spring Rates, Brands and Conversion Charts

The two most popular units of measurement for coilover spring rate are kg/mm which refers to how many kilograms it takes to compress the spring 1mm and lbs/inch which refers to how many pounds it takes to compress the spring 1 inch. Here are a couple of quick spring rate conversion charts: kg/mm to lbs/inch Conversion Chart …

08-22 WRX and STi Rear Camber and Toe Correction

In this post I will cover both why/when adding aftermarket adjustment is recommended and the brands and components that I personally recommend using. Off the showroom floor these cars do not have rear camber adjustment. It’s important to note that …

Independent Preload Adjustment vs Helper Springs

This picture shows the two main styles of height adjustable coilovers. The shock on the left uses a helper spring to keep tension on the main spring. The shock on the right allows the user to lock preload with the lower spring perch independent of ride height adjustment. With the helper spring style the shock is a single piece……

Monotube vs Twintube

I just wanted to make a quick technical post. Monotube vs Twintube. Anyone who is buying coilovers for their Subaru should watch the following two videos. One of them is less than a minute long, and the other is just over two minutes long. These three minutes and change will be……

How to Set Preload

Setting Preload. This applies to all Cygnus Performance coilovers for all Subaru applications: The preload values are 1/4″ front and 1/8″ rear. In order to set preload you need to first loosen the lower spring perch which is the collar at the bottom of the spring……
 

Spring Rates

There is no additional cost to customize spring rates on our Cygnus Performance X-1 coilovers, and unlike most coilover brands in this price range we actually valve your shocks to match your desired spring rates. The standard rates are the most popular choice……

Shock Oil Testing

Testing oil options for our Cygnus Performance X-1 Coilovers. We are simulating conditions that are far beyond anything that you will actually subject your suspension to. This video shows a shock dyno running continuously at 20 inches per second. We are torture testing several different types of oil for 24 hours straight…

Redefining What Is Possible With Affordable Coilovers

The latest versions of Cygnus Performance X-1 coilovers are now live on our website! Pricing starts at just $1,650. We are offering options and features that are not available on any other coilover set in this price range. When it comes to the components that affect ride quality, performance and shock longevity zero corners have been cut. We offer high-quality Japanese bearings, Japanese rubber top hats, Swedish shims, high viscosity index group 5 fully synthetic shock oil……