LS Crank Pin Kit Stock LS crank pulleys do not have any kind of keyway to keep the crank pulley from spinning on the crankshaft. This is fine for stock applications, but for supercharged, or high horsepower applications the crank needs to be pinned to prevent slipping. Sunluway Crank Pin Kit easily drill and pin your GM LS/LT series crankshaft & balancer to prevent slip.<br><br> Compatibility: Compatible with all Gen 3, 4, & 5 series engines. For LS1 LS2 LS3 LT1 LQ4 LQ9 LSX LSA 5.3 6.0<br><br> Our basic crank pin kit comes with the following: <br> Drill sleeve fixture<br> Drill bit<br> Tool hold down bolt<br> 2pcs hardened dowel pins<br><br> Only 1 pin is needed, but we provide one extra to do multiple cranks, or you can add an extra pin to your crank for peace of mind. <br><br> The best quality of Sunluway Crank Pin Kit won't let you down! Buy it with confidence!