Racers, lock and load for Operation Full Throttle with Tool Room RAD racing valve springs from Isky. Utilizing failsafe endurance processing, every part and every batch is tested every time to give you the ability to push your engine to the limit! The RAD-9000 processing of Tool Room valve springs employs radial densification (RAD), Isky's trade secret, to optimize the physical properties and endurance of your engine's high-rpm torture as you battle for the checkered flag. These precision-designed, "super-clean," high-alloy steel racing valve springs are put through an all-out, no-holds-barred endurance test. The elite survive this pass-or-fail benchmark, ensuring that only the strongest go into your race car. Ordinary valve springs can succumb to resonant vibration, putting you out of the race. So, why take a chance? Armor your valvetrain with sustained redline protection to encounter and overtake the competition--Isky Tool Room RAD racing valve springs.

Outer OD/ID: 1.560/1.45 in.

Inner OD/ID: 1.040/0.740 in.

Seat Load: 245 lbs. at 1.970 in.

Open Load: 590 lbs. at 1.290 in.

Coil Bind Height: 1.190 in.

Rate: 485 lbs.

Quantity: Set of 16

In Store Pickup: Anaheim, CA, USA

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Isky RAD Racing Valve Springs 9975-RAD

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