Rear Spring FZ400

【HYPERPRO Hyperpro 22033061 Rear Spring FZ400 Suspension】
■Rear Spring
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, and also has the ability to resist high-load cornering and sudden braking.
●Front springs come with the necessary amount of fork oil.
●Optimizes caster changes during braking before corners, making it easier to transition to the next action. Absorbs small bumps during cornering, eliminating vibrations that interfere with the rider.
●Unlike regular 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 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 FZ400 '97-'99
Specifications
Spring part number: 347
Preload adjustment: POS. 4-5
Sag value: 11mm
Compression adjustment: None
Rebound adjustment: None
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