Front spring ER-4n

【HYPERPRO Hyperpro 22073110 Front Spring ER-4n Suspension Fork Spring】
■Front Spring
A suspension spring with a constant rising rate, uniquely designed by Hyperpro.
The spring rate constantly changes in response to the suspension's movement.
It maintains a state that is neither too soft nor too hard, while also providing the strength to withstand high-load cornering and sudden braking.
●Optimizes the change in caster during braking before a corner, making it easier to transition to the next action. Absorbs small bumps during cornering, eliminating vibrations that interfere with the rider.
●Unlike ordinary springs, there is no constant spring rate, so resonance does not occur.
●Springs wound by computer-controlled machine tools are shot-peened to remove microscopic surface scratches that can lead to performance degradation. Furthermore, after completion, each spring undergoes a performance inspection with a tester.
●In the Netherlands, Hyperpro's home base, all emergency motorcycles are equipped with Hyperpro springs.
Compatible models
KAWASAKI ER-4n '11-'13 (ABS not available)
Specifications
Spring part number: 1409
Fork oil viscosity/level: SAE15/120mm
Preload adjustment: No adjustment
Sag value: 20mm
Compression adjustment: No adjustment
Rebound adjustment: No adjustment
*The image is for illustration purposes only, and the design and specifications of the products shown are subject to change without notice. Please be aware.