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Duration (E) Profile - "Stage2" for built engine mid/high rpm motorsport applications running 58 to 66mm turbo size
Endurance spring kit is identical to what Cosworth used to offer for their head packages
UNLEASH THE POWER WITH KELFORD CAMS
All IRP pistons incorporated a bridged and strutted construction for strength and stiffness and a skirt coating for friction reduction
STI has re-engineered gear shifting performance for sport driving
GSC Beehive Valve Spring and Ti Retainer Set EJ DBA Duration (E) Profile - "Stage2"KEEP YOUR VALVES UNDER CONTROL GSC's beehive valve springs utilize a progressively wound spring design manufactured using a high quality ovate wire. The benefit of this is a stable spring design and a natural frequency that is superior for high rpm use and high boost conditions when running an aggressive camshaft profile. A beehive spring design outperforms single or dual straight spring designs. The reduced top diameter allows for a titanium retainer
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