Billet main caps designed & tested in house for the perfect blend of machinability and strength. These 2-Bolt main caps provide a tremendous stability upgrade over factory cast iron main caps. No longer will you need to worry about crack prone cast iron! Machined from USA sourced steel, you can add piece of mind without breaking the bank.
 
These caps are designed to accept a "1-Pass" line bore, followed by finish honing.
 
We maintain use of the factory block register for both ease of installation, and ability to ensure parallelity to the crankshaft centerline.
 
We offer a custom tailored Opti-Torque hardware kit with ALL main cap offerings. With 1/2" Broached end studs, 12pt nuts, 7/16-14 12pt Outer Bolts(Splayed Only), and hardened washers, its the perfect way to fasten your main cap kit. With a complete torque spec installation guide & assembly lube, we can't make it any easier!
 
1/2" Center Clearance Holes