99-10 Dodge Viper Race Master Exhaust Valve - Single by Manley Performance

Race Master, and the Pro Flo versions identified as Race Flo valves, are manufactured of XH-426 material for the exhausts and NK-842 for the intakes. This series of valves is targeted at the bracket, drag and oval track racers operating below 8000 rpm - above which engine speed titanium valves are generally required.

Any engine builder successfully using EV-8 alloy ( 21-4N ) valves will find in this series of Manley valves a superior piece at a most attractive price. The Ultimate Tensile Strength charts on this page and the next, show the Manley Race Series to be equal to the best that the competitors have to offer.

Features

• Valve Usage: Exhaust
• Valve Head Diameter (in.): 1.600 in.
• Valve Head Diameter (mm): 40.640mm
• Valve Stem Diameter (in.): 0.311 in.
• Valve Stem Diameter (mm): 7.90mm
• Overall Valve Length (in.): 5.770 in.
• Overall Valve Length (mm): 146.558mm
• Undercut Stem: No
• Swirl-Polished: Yes
• Valve Tip Length (in.): 0.110 in.
• Valve Tip Length (mm): 2.794mm
• Valve Material: XH-426 stainless steel
• Lock Groove Quantity: 1-groove
• Lock Groove Style: Beadlock
• Approximate Weight (g): 102
• Valve Head Style: 12 degree dish
• Valve Seat Width (in.): 0.100 in.

Benefits

• Up to 40% flow increase in small port OE style cylinder heads
• Intakes are “Pro Flo” for Improved Flow

Please Note: The image provided is generic and may not be an accurate representation of the product you will receive

Applications

• 1993 - 2005 Lexus GS300
• 2001 - 2005 Lexus IS300
• 1992 - 2000 Lexus SC300
• 1993 - 1998 Toyota Supra

What's In The Box?

• 1 - Exhaust Valve

Warranty

• Manley products, due to their intended use, are sold without warranty.