Front spring R1-Z

【HYPERPRO Hyperpro 22035010 Front Spring R1-Z Suspension Fork Spring】
■Front Spring
Suspension springs with a constant rising rate, uniquely designed by Hyperpro.
The spring rate constantly changes in response to suspension 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 caster change 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 conventional springs, there is no constant spring rate, so it does not resonate.
●Springs wound by computer-controlled machines are shot-peened to remove minute surface scratches that lead to performance degradation. Furthermore, each finished spring undergoes a performance inspection by a tester.
●In Hyperpro's home country of the Netherlands, all ambulance motorcycles are equipped with Hyperpro springs.
Compatible models
YAMAHA R1-Z '90-'93
Specifications
Spring part number: 384
Fork oil viscosity/oil level: SAE15/130mm
Preload adjustment: 2nd-4th stage
Sag value: 23mm
Compression adjustment: None
Rebound adjustment: None
Setting notes: Install with forks protruding 20mm (using genuine preload bush L=130mm)
*Images are for illustration purposes only. Product designs and specifications shown are subject to change without notice. Please be aware.