Front Springs SR400

【HYPERPRO 22033040 Front Spring SR400 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 caster changes during braking before corners, making it easier to transition to the next action. It absorbs minor bumps during cornering, eliminating vibrations that interfere with the rider.
●Unlike regular springs, it does not have a constant spring rate, so it does not resonate.
●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 performance inspection by a tester.
●In the Netherlands, Hyperpro's home country, all emergency motorcycles are equipped with Hyperpro springs.
Compatible models
YAMAHA SR400 '85-'00 (Drum Brake)
Specifications
Spring material number: 328
Fork oil viscosity/oil level: SAE20/150mm
Preload adjustment: No adjustment
Sag value: 20mm
Compression adjustment: 0 BAR
Rebound adjustment: No adjustment
Setting notes: Remove the genuine spacer before assembly. Do not pressurize with air.
*Images are for illustration purposes only, and the design and specifications of the products shown are subject to change without notice. Please understand.