Innovators West Balancer 811/963SD (Super Duty Hub Upgrade)
2003-2004 Mustang Cobra
Metco Motorsports PN MIW0015
Manufactured in the USA by Innovators West, this SFI 18.1-spec balancer is the premier balancer in motorsports.
This balancer uses an all-aluminum case for lower reciprocating weight, a stress-proof steel hub and 1040 steel internal inertia rings for outstanding durability.
Inside the light weight billet aluminum cover is a free-floating wet-friction clutch pack assembly that utilizes spring loaded inertia rings to dampen crankshaft harmonics over a wide RPM range. The rings work in conjunction with clutches to provide outstanding dampening action. The small amount of heat generated by this dampening action is cooled by the fluid inside that also serves as a lubricant. This is a serious piece for cars making serious power, and yet it installs without modifications to the vehicle.
This balancer incorporates the 6-bolt flange used to mount the Metco Motorsports crank pulley rings, so no crank pulley hub is necessary. Crank pulley rings can be mounted directly to the face of the balancer, and when installed will be in perfect alignment with the supercharger pulley. Crank pulley rings are listed elsewhere in this section.
The installation of this balancer requires removal of the OEM 'cage' assembly, which means an alternate mount for the idler pulley located to the driver's side of the balancer will be necessary. Our ICPIDL03 Idler Pulley Relocation Kit (also listed elsewhere in this section) represents a bolt-on solution for this problem.
This balancer weighs 9.2 lbs. A new balancer bolt and washer are provided.
The Super Duty hub upgrade offered here includes an upgraded balancer hub for the crankshaft, made with a larger OD and from a higher grade of steel to resist cracking in severe (750+ HP) applications. A larger front cover seal is necessary, and is provided. We highly recommend the Super Duty Hub Upgrade for all installations.
