Rear spring SR400

【HYPERPRO 22033041 Rear Spring SR400 Suspension】
■Rear Spring
Suspension spring with a constant rising rate, uniquely designed by Hyperpro.
The spring rate constantly changes to follow the suspension's 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.
●Front springs come with the necessary amount of fork oil.
●Optimizes caster changes 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 it does not resonate.
●Springs wound by computer-controlled machine tools are shot-peened to remove microscopic scratches on the surface that lead to performance deterioration. Furthermore, after completion, each spring undergoes a performance test by a tester.
●In the Netherlands, Hyperpro's home country, all emergency motorcycles are equipped with Hyperpro springs.
Compatible models
YAMAHA SR400 '78-'21 (drum brake)
Specifications
Spring material number: 329
Preload adjustment: POS. 1-3
Sag value: 10mm
Compression adjustment: None
Rebound adjustment: None
*Images are for illustration purposes only. Designs and specifications of published products are subject to change without notice. Please be aware of this.