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RHS
Racing Head Service™ - the legendary innovator of airflow technology – offers the ultimate in cylinder head, engine block and intake manifold performance. RHS® is proud to re-emerge as a member of the COMP Performance Group™ with the industry’s largest and most advanced airflow technology team. By combining knowledge with valve train experts at COMP Cams® for more comprehensive R&D efforts, our engineers have been able to develop some of the highest flowing, best performing cylinder heads and intake manifolds in the performance aftermarket. Butler LS and RHS, when lack of performance is not an option.

RHS Categories

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Cylinder Heads
We are excited you have visited our brand new site. As you can see we are tirelessly building out our new site with performance parts, engines, and assemblies for your LS and GM needs. Check...More Details »
Engine Blocks
We are excited you have visited our brand new site. As you can see we are tirelessly building out our new site with performance parts, engines, and assemblies for your LS and GM needs. Check...More Details »
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RHS Products

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Description: Heavy-duty A357-T6 aluminum .750” deck thickness Raised cam centerline Superior Oiling Choose Unfinished, Ready to Hone, or Honed Deck Heights 9.240"-9.250" Bores 4.125”-4.165”
Item #: RHS-
Condition: New
Price: $4,999.95

Description: Heavy-duty A357-T6 aluminum .750” deck thickness Raised cam centerline Superior Oiling Choose Unfinished, Ready to Hone, or Honed Deck Heights 9.750"-9.760" Bores 4.125”-4.165”
Item #: RHS-
Condition: New
Price: $4,999.95

Description: RHS® Pro Elite™ LS7 Cylinder Heads are the aftermarket’s first high performance LS-style head to feature a raised intake runner design that fits both stock and aftermarket LS7 intake manifolds...More Details »
Item #: RHS-54501-05HCS
Condition: New
Price: $1,599.95
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Description: RHS® Pro Elite™ LS7 Cylinder Heads are the aftermarket’s first high performance LS-style head to feature a raised intake runner design that fits both stock and aftermarket LS7 intake manifolds...More Details »
Item #: RHS-54501-06STI
Condition: New
Price: $1,899.95
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Items 1-4 of 4