Manley 11769-8 Race Master Exhaust Valves Big Block Chevy 1.900 Inch Set of 8

The Manley 11769-8 Race Master exhaust valves are engineered for high-performance Big Block Chevy engines that demand reliability under extreme conditions. These premium stainless steel valves are designed to withstand the rigors of bracket racing, drag racing, oval track competition, and modified street engines operating below 8,000 rpm.

Key Specifications:

• Valve head diameter: 1.900 inches
• Valve stem diameter: 0.342 inches (11/32 inch)
• Overall length: 5.522 inches (+0.100 inch longer than stock)
• Valve tip length: 0.250 inches
• Material: XH-426 stainless steel for maximum strength and durability
• Valve head style: 5 degree dish with 0.100 inch seat width
• Lock groove: 1-groove beadlock style
• Weight per valve: 125 grams
• Quantity: Set of 8 valves

Premium Features:

• Swirl-polished finish for improved flow characteristics
• Chrome stems with hardened valve tips for extended service life
• Fully machined to exacting tolerances
• XH-426 stainless steel construction provides the strongest exhaust valves in their class

Manley Performance has earned a reputation as one of the world's leading manufacturers of racing valves. The Race Master series combines race-proven materials with precision manufacturing to deliver valves that perform when everything is on the line. Whether you're competing at the track or enjoying spirited street performance, these valves provide the durability and reliability you need.