Trick Flow Inside Valve Spring Locator - 0.053 in Thick - 1.550 in OD - 0.560 in ID - Black Oxide (Set of 16) RS003C0111W 8 in width and 5x120

8 in width and 5x120 mm lug pattern

making it a breeze to set height and square

You'll also be able to set a 2-Step Rev Limiter

Air Jack Mounting Ring

Trick Flow Inside Valve Spring Locator - 0.053 in Thick - 1.550 in OD - 0.560 in ID - Black Oxide (Set of 16) RS003C0111W 8 in width and 5x120Product Description: Valve Spring Locator Inside 0. 053 in Thick 1. 550 in OD 0. 560 in ID Chromoly Black Oxide Set of 16 Trick Flow built their reputation on designing and producing power boosting aluminum cylinder heads for high performance engines, and have grown to offer a full range of performance parts and bolt on kits for nearly every aspect of the engine and drivetrain.