Massive Speed Crank Pinning Install Harmonic Damper Balancer Pulley Bolt LS1 ARP KIT Tool LSX MATO'16714

Massive Speed PRO KITMassive LSXact Crank Pinning ToolMassive LSXact Crank Pulley Install ToolMassive Precision Fasteners XL High Strength Reusable Crank Bolt Massive LSXact PRO Kit - Includes our 3 most popular crank pulley offerings, all of which you will want for your performance LS build. The pinning kit, the pulley Install Tool and our high strength reusable crank bolt! SAVE on cost and shipping! The GM LS family of engines relies on a press fit of the crankshaft pulley as its only means of preventing rotation.  While this may be sufficient for a stone stock grocery getter, any competition / performance build should deem locking the crank pulley a necessity.  High RPMs, factory or custom belt driven superchargers, aftermarket dry sump systems, etc., all require a more positive locking of the pulley to the crank snout. Massive has produced the finest available solution to this issue, the LS-X-ACT pinning kit.  This bolt on fixture allows you to accurately, safely drill a path to i