Jeu de ressorts de soupapes renforcées (coupelles supérieures en acier)

Hard Valve Spring Kit

• Enables timing to be maintained at high engine speeds
• Lightened valve plates reduce the inertial mass of the entire valve train
• Allows more valve lift; recommended for some tuning camshafts (in some cases even mandatory)
• Delivery for intake & exhaust valve complete including spring retainer as well as valve keys (only if the original valve keys cannot be reused)
• Only suitable for racing purpose