Sprindex damper springs allow the spring stiffness of steel spring dampers to be adjusted to the rider's individual needs. Thanks to patent-pending technology, this is done in no time at all with a finely indexed dial, without tools and independently of the spring preload. Dial in your ride.
Details
Lightweight shock spring for trail and enduro with tool-free adjustable spring rate
Material: High-quality Lightweight steel
Stroke: 65mm (2.6")
Length: 142mm
Spring stiffness adjustable independently of spring preload
Indexed rotary adjuster to adjust spring rate in 5lbs increments
Incl. performance adapters made of Delrin to adapt to different shock diameters: Fox/Marzocchi, RockShox, DVO/Cane Creek/X-Fusion
Spring rate: 390 - 430 lbs
Weight: 419 g
How Sprindex works
The spring stiffness of a spring is the force required to compress the spring a certain distance (usually pounds per inch or newtons per mm). Spring stiffness is made up of 4 properties: Wire diameter, coil diameter, material, and number of active coils. More active coils result in lower spring stiffness and fewer active coils result in higher spring stiffness. Think of it this way: The less wire that needs to be bent, the stiffer the spring. By rotating the Sprindex grid, Sprindex changes the number of active coils that can be compressed. The set spring stiffness is indicated by a window in the grid.
Steel spring dampers versus air dampers
The performance of steel spring dampers is significantly better than that of air dampers. The prerequisite is that the rider selects the correct spring stiffness. Air dampers have significant "stiction," or breakaway torque.
Steel spring dampers have a much lower breakaway torque and therefore respond much more sensitively from the start. Steel spring dampers absorb small bumps much better, improving tire contact with the ground and thus providing better traction. So you are measurably fast on the trail. So why are air shocks so popular? For one thing, it's the slightly higher weight, and for another, you couldn't adjust steel springs until now. Conventional steel springs have a fixed spring rate and this has a dramatic effect on ride performance and feel. Most bikers ride with the wrong spring rate, as springs are usually only available in large increments. Spring stiffness has a serious impact on the performance of the bike. Steel spring shocks also weigh more than air shocks. However, the better performance of the steel spring more than makes up for this small disadvantage. In addition, Sprindex springs are lighter than ordinary steel springs.