Front spring XJR400R

【HYPERPRO 22033050 Front Spring XJR400R 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 suspension movement.
It maintains a state that is neither too soft nor too hard, and also has the ability to maintain stability during 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 gaps during cornering and eliminates vibrations that interfere with the rider.
●Unlike ordinary springs, there is no constant spring rate, so it does not resonate.
●Springs wound by computer-controlled machine tools are shot-peened to remove microscopic scratches on the surface that can lead to performance degradation. Furthermore, after completion, each spring undergoes a performance inspection by a tester.
●In the Netherlands, Hyperpro's home country, all emergency motorcycles are equipped with Hyperpro springs.
Compatible models
YAMAHA XJR400R '95～'97
YAMAHA XJR400R2 '95～'97
Specifications
Spring part number: 390
Fork oil viscosity/oil level: SAE15/120mm
Preload adjustment: None
Sag value: 25mm
Compression adjustment: None
Rebound adjustment: None
Setting remarks: Protrusion amount 20mm / Please assemble using the genuine spacer.
*The image is for illustrative purposes only, and the design and specifications of the products shown are subject to change without notice. Thank you for your understanding.