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Manley Performance is universally acknowledged as the leading manufacturer of performance and racing valves in the world. The reason for Manley’s overwhelming success is simple: QUALITY. We offer the best materials in the industry - exclusive materials our competitors do not possess. Our stems are hard coated with .0002” thick chrome rather than a few millionths of flash. Our hard tips are superior to competitors’ puddled stellite which can crack and erode off the stem. Our valve head and underhead shapes have been in the forefront of the quest for improved flow since the late 1960’s. And always each Manley valve has been price targeted to specific markets to ensure the best possible value to the customer.
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Manley 11350-8 Race Series Valves Manley 11350-8 - 2.100" Intake - Race Series Stainless Steel Valves

Manley 11350-8  LS1, LS2 and LS6 Race Series Stainless Steel Intake Pro Flo Valves

Our Price: $136.99
Manley 11360-8 Race Series Valves Manley 11360-8 - 2.000" Intake - Race Series Stainless Steel Valves

Manley 11360-8  LS1, LS2 and LS6 Race Series Stainless Steel Intake Pro Flo Valves

Our Price: $136.99
Manley 11361-8 Race Series Valves Manley 11361-8 - 1.550" Exhaust - Race Series Stainless Steel Valves

Manley 11361-8  LS1, LS2 and LS6 Race Series Stainless Steel Exhaust Valves

Our Price: $136.99
Manley 11362-8 Race Series Valves Manley 11362-8 - 2.020" Intake - Race Series Stainless Steel Valves

Manley 11362-8  LS1, LS2 and LS6 Race Series Stainless Steel Intake Pro Flo Valves

Our Price: $136.99
Manley 11363-8 Race Series Valves Manley 11363-8 - 1.575" Exhaust - Race Series Stainless Steel Valves

Manley 11363-8  LS1, LS2 and LS6 Race Series Stainless Steel Exhaust Valves

Our Price: $136.99
Manley 11365-8 Race Series Valves Manley 11365-8 - 1.600" Exhaust - Race Series Stainless Steel Valves

Manley 11365-8  LS1, LS2 and LS6 Race Series Stainless Steel Exhaust Valves

Our Price: $136.99
Manley 11390-8 Race Series Valves Manley 11390-8 - 2.055" Intake - Race Series Stainless Steel Valves

Manley 11390-8  LS1, LS2 and LS6 Race Series Stainless Steel Intake Pro Flo Valves

Our Price: $136.99
Manley 11398-8 Race Series Valves Manley 11398-8 - 2.080" Intake - Race Series Stainless Steel Valves

Manley 11398-8  LS1, LS2 and LS6 Race Series Stainless Steel Intake Pro Flo Valves

Our Price: $136.99
Manley 12350-8 Race Series Valves Manley 12350-8- 2.165" Intake - Race Series Stainless Steel Valves

Manley 12350-8  LS3, L92 and L99 Race Series Stainless Steel Intake Pro Flo Valves

Our Price: $144.99
Manley 11621-8 Race Series Valves Manley 11621-8 - 1.590" Exhaust - Race Series Stainless Steel Valves

Manley 11621-8  LS3, L92 and L99 Race Series Stainless Steel Exhaust Valves

Our Price: $148.99
Manley 12345-8 Race Series Valves Manley 12345-8 - 1.590" Exhaust - Race Series Stainless Steel Valves

Manley 12345-8  LT1 Race Series Stainless Steel Valves Exhaust Valves

Our Price: $149.99
Manley 12348-8 Race Series Valves Manley 12348-8 - 2.120" Intake - Race Series Stainless Steel Valves

Manley 12348-8  LT1 Race Series Stainless Steel Valves Intake Pro Flo Valves

Our Price: $149.99
Manley 12353-8 Race Series Valves Manley 12353-8 - 1.600" Exhaust -Race Series Stainless Steel Valves

Manley 12353-8  LS3, L92 and L99 Race Series Stainless Steel Exhaust Valves

Our Price: $149.99
Manley 11620-8 Race Series Valves Manley 11620-8 - 2.165" Intake - Race Series Stainless Steel Valves

Manley 11620-8  LS3, L92 and L99 Race Series Stainless Steel Intake Pro Flo Valves

Our Price: $159.99
Manley 11689-8 Race Series Valves Manley 11689-8 - 1.615" Exhaust - Race Series Stainless Steel Valves

Manley 11689-8  LS7 Race Series Stainless Steel Valves Exhaust Valves

Our Price: $159.99
Manley 11661-8 Severe Duty Valves Manley 11661-8 - 1.590" Exhaust - Severe Duty Stainless Steel Valves

Manley 11661-8  LS3, L92 and L99 Severe Duty Stainless Steel Exhaust Valves

Our Price: $218.99
Manley 11673-8 Severe Duty Valves Manley 11673-8 - 1.550" Exhaust - Severe Duty Stainless Steel Valves

Manley 11673-8  LS1, LS2 and LS6 Severe Duty Stainless Steel Exhaust Valves

Our Price: $218.99
Manley 11675-8 Severe Duty Valves Manley 11675-8 - 1.575" Exhaust - Severe Duty Stainless Steel Valves

Manley 11675-8  LS1, LS2 and LS6 Severe Duty Stainless Steel Exhaust Valves

Our Price: $218.99
Manley 11677-8 Severe Duty Valves Manley 11677-8 - 1.600" Exhaust - Severe Duty Stainless Steel Valves

Manley 11677-8  LS1, LS2 and LS6 Severe Duty Stainless Steel Exhaust Valves

Our Price: $218.99
Manley 11679-8 Severe Duty Valves Manley 11679-8 - 1.615" Exhaust - Severe Duty Stainless Steel Valves

Manley 11679-8  LS7 Severe Duty Stainless Steel Valves Exhaust Valves

Our Price: $218.99
Manley 11680-8 Severe Duty Valves Manley 11680-8 - 2.055" Intake - Severe Duty Stainless Steel Valves

Manley 11680-8  LS1, LS2 and LS6 Severe Duty Stainless Steel Intake Pro Flo Valves

Our Price: $218.99
Manley 11682-8 Severe Duty Valves Manley 11682-8 - 2.080" Intake - Severe Duty Stainless Steel Valves

Manley 11682-8  LS1, LS2 and LS6 Severe Duty Stainless Steel Intake Pro Flo Valves

Our Price: $218.99
Manley 11684-8 Severe Duty Valves Manley 11684-8 - 2.100" Intake - Severe Duty Stainless Steel Valves

Manley 11684-8  LS1, LS2 and LS6 Severe Duty Stainless Steel Intake Pro Flo Valves

Our Price: $218.99
Manley 12347-8 Severe Duty Valves Manley 12347-8 - 1.590" Exhaust - Severe Duty Stainless Steel Valves

Manley 12347-8  LT1 Severe Duty Stainless Steel Valves Exhaust Valves

Our Price: $227.99
Manley 11688-8 Severe Duty Valves Manley 11688-8 - 2.205" Intake - Severe Duty Stainless Steel Valves

Manley 11688-8  LS7 Severe Duty Stainless Steel Valves Intake Pro Flo Valves

Our Price: $237.99
Manley 12352-8 Severe Duty Valves Manley 12352-8 -2.120" Intake - Severe Duty Stainless Steel Valves

Manley 12352-8  LT1 Severe Duty Stainless Steel Valves Intake Pro Flo Valves

Our Price: $244.99
Manley 11686-8 Severe Duty Valves Manley 11686-8 - 2.165" Intake - Severe Duty Stainless Steel Valves

Manley 11686-8  LS3, L92 and L99 Severe Duty Stainless Steel Intake Pro Flo Valves

Our Price: $254.99
Manley 12354-8 Severe Duty Valves Manley 12354-8 - 2.165" Intake - Severe Duty Stainless Steel Valves

Manley 12354-8  LS3, L92 and L99 Severe Duty Stainless Steel Intake Pro Flo Valves

Our Price: $254.99
Manley 12355-8 Severe Duty Valves Manley 12355-8 - 1.600" Exhaust - Severe Duty Stainless Steel Valves

Manley 12355-8  LS3, L92 and L99 Severe Duty Stainless Steel Exhaust Valves

Our Price: $259.99
Manley 11687-8 Extreme Duty Valves Manley 11687-8 - 1.615" Exhaust - Extreme Duty Inconel Valves

Manley 11687-8  LS7 Extreme Duty Inconel Valves Exhaust Valves

Our Price: $409.99