4-PIN CRANK HUB FOR BMW M3, M4, M2C S55 – INSANE PERFORMANCE UPGRADE

A common issue with the S55 is crank hub failure/slip due to the OE design of using a central bolt & friction to keep the engine in time. Both when tuned and stock usually during downchanges due to the torque load against the crankshaft the OE hub can slip and cause timing misalignment which can result in engine limp mode/lack of power and or bent inlet/exhaust valves.

Insane Performance's crank hub is offered in a 2-pin and upgraded 4-pin design for those looking to push their S55/N55s to the limits while having greater peace of mind.  Please keep in mind neither version has had a known failure with 1200+ vehicles on the road today and counting. Insane Performance's 2-pin crank hub has also been tested up to 1000+ WHP without issue. 

KIT INCLUDES

• One Piece 4 Pin Crank Hub
• OEM Crank Bolt
• Specialty Drill Bit
• Drill Fixture Tool
• Drill Fixture Bolt

APPLICATIONS

• BMW F80 M3 (2015 +)
• BMW F82 M4 (2015 +)
• BMW F82 M2 Competition (2019 +)
• The items in this kit are compiled specifically for the BMW S55 engine and therefore will fit any other unlisted models that use a BMW S55 engine