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Zero Friction progressive springs
A pressure-relief valve prevents hydraulic lock under maximum load
Revolutionize your motorcycle's front suspension with the YSS PD Valve
The ultimate shock configuration: a milled upper mount with integrated high-/low-speed compression adjusters (22 clicks each)
and Teflon-guided self-aligning bearings
Rear Shock Spring Spring Color:Purple Zero Friction progressive springsThe Hyperpro Progressive Rear Spring enhances cornering, reduces braking distance, and improves overall bike balance and feedback, fitting onto the original shock for easy installation.
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