THITEK Performance

THITEK offers the only unique cast cylinder heads for the Gen III Hemi platform. Our commitment to quality, engineering, performance and customer service is second to none.

THITEK "Bear" | Gen III Hemi Heads

Answering the Hemi Call: New Cast, Real Options

The THITEK GIIIH "Bear" is the first aftermarket available cylinder head for the Late Model Hemi platform. A true bolt on cylinder head design that replaces the factory cylinder head with no other modifications needed.

The ultimate in performance upgrade for your G III / IV late model engine. Airflow has been increased from over 75 cfm on the 2.125" 200 cc head to over a whooping 100 cfm on the 2.165" 205cc head over factory as cast cylinder heads. A high flow exhaust port design increases airflow over 50 cfm over the factory designs.

GIIIH "Bear" Standard Versions

Recent News

Jesse's 200mph Challenger

Jesse's 200mph Challenger - Hot Rod Magazine - January 2014

Hot Rod Magazine is highlighting another top build featuring ThiTek heads, Jesse Iwuji’s 200mph Challenger. Congratulations to Jesse for breaking the 200mph wall. We are extremely proud our heads were chosen to be a part of Jesse’s build and wish him the best of luck at his next top speed event.

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BES/HPP Street Outlaw Build

BES/HPP Street Outlaw Challenger

The Street Outlaw build by BES/HPP for Rob Goss is featured this month on the NCMA website. This is an all out build featuring Thitek’s Bear GIIIH Cylinder Heads.

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PRI Indy 2013

Thitek Attends PRI Indy 2013

Thitek is on hand for the PRI show in Indianapolis (December 12th – 14th). Drop by booth #8301 and meet Craig Thibeau, owner and chief cylinder head tech at Thitek.

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THITEK Videos

VMP - Fall 2013 Video

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