Halo main girdle kit with cap supports
Steel halo-style main girdle to connect the main caps and add strength and rigidity.
Precision ground steel cap supports minimize main cap flex under high power and / or detonation.
Kit includes halo, precision ground cap supports, and ARP™ main studs.
Recommended for high RPM (over 6000 RPM), stroker, and small power adder applications.
Will not fit most stock pans and some older fabricated pans without major modifications
Our rear sump aluminum pan and newer fabricated pans will all fit.
For lower tress applications, you can use RB19121
For high end boosted applications, we recommend you send in your block for our 4 bolt conversion.
Made in USA.