Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Manley Performance

Manley Performance

Manley Race Master Valves 11308-1 Valves, Master, Intake, XH-426 Stainless Steel, 2.080 in. Diameter, 5.00 in. Length, Set of 8

SKU: MAN11308-1

Valves
Manley Race Master Valves 11308-1 Valves, Master, Intake, XH-426 Stainless Steel, 2.080 in. Diameter, 5.00 in. Length, Set of 8
Manley Performance

Manley Performance

Manley Race Master Valves 11308-1 Valves, Master, Intake, XH-426 Stainless Steel, 2.080 in. Diameter, 5.00 in. Length, Set of 8

SKU: MAN11308-1

Valves
A$71.27
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Manley Race Master valves are designed and engineered to withstand the abuse of the track. Race Master valves are targeted by the bracket, drag, and oval track racers, or even those with modified street engines that are operating at engine speeds below 8,000 rpm. These valves are constructed from XH-426 material for the exhaust and NK-842 for the intake valves, making them the strongest valves in their class. Whether everything is on the line at the track, or you just enjoy your high performance car or motorcycle on the street, trust Race Master valves by Manley to keep you on the move. Order the model designed for your vehicle year/make and engine application.

Part Type

Valves

Data: v4.2 - Upd: 2026-10-14 10:10:17

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11308-1
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Race Master Valves
Product Attributes - UPC
807298054483
Product Attributes - Valve Position
Intake
Product Attributes - Intake Valve Head Diameter (in.)
2.080 in.
Product Attributes - Intake Valve Head Diameter (mm)
52.832mm
Product Attributes - Intake Valve Stem Diameter (in.)
0.372 in.
Product Attributes - Intake Valve Stem Diameter (mm)
9.44mm
Product Attributes - Intake Overall Valve Length (in.)
5.000 in.
Product Attributes - Intake Overall Valve Length (mm)
127.000mm
Product Attributes - Undercut Stem
Yes
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.275 in.
Product Attributes - Valve Tip Length (mm)
6.985mm
Product Attributes - Valve Material
XH-426 stainless steel
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Valve Head Style
7 degree dish
Product Attributes - Valve Seat Width (in.)
0.080 in.
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11308-1
SFX Item ID 4929203
Supplier Item Code 4929203
Manufacturer SKU 11308-1
Manufacturer UPC 807298054483
Alternative References XH-426

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHRYSLER
    Beginning Year1959
    Ending Year1960
    Engine TypeV8
    Engine Size6.3L/383
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeCHRYSLER
    Beginning Year1959
    Ending Year1965
    Engine TypeV8
    Engine Size6.7L/413
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeCHRYSLER
    Beginning Year1959
    Ending Year1965
    Engine TypeV8
    Engine Size6.8L/413
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeCHRYSLER
    Beginning Year1963
    Ending Year1963
    Engine TypeV8
    Engine Size7.0L/426
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeCHRYSLER
    Beginning Year1966
    Ending Year1978
    Engine TypeV8
    Engine Size7.2L/440
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeDODGE
    Beginning Year1959
    Ending Year1960
    Engine TypeV8
    Engine Size6.3L/383
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeDODGE
    Beginning Year1960
    Ending Year1965
    Engine TypeV8
    Engine Size6.7L/413
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeDODGE
    Beginning Year1961
    Ending Year1963
    Engine TypeV8
    Engine Size6.8L/413
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeDODGE
    Beginning Year1963
    Ending Year1965
    Engine TypeV8
    Engine Size7.0L/426
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeDODGE
    Beginning Year1965
    Ending Year1965
    Engine TypeV8
    Engine Size6.7L/413
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakeDODGE
    Beginning Year1966
    Ending Year1979
    Engine TypeV8
    Engine Size7.2L/440
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakePLYMOUTH
    Beginning Year1960
    Ending Year1960
    Engine TypeV8
    Engine Size6.3L/383
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakePLYMOUTH
    Beginning Year1961
    Ending Year1962
    Engine TypeV8
    Engine Size6.8L/413
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakePLYMOUTH
    Beginning Year1961
    Ending Year1964
    Engine TypeV8
    Engine Size6.7L/413
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakePLYMOUTH
    Beginning Year1963
    Ending Year1965
    Engine TypeV8
    Engine Size7.0L/426
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakePLYMOUTH
    Beginning Year1966
    Ending Year1978
    Engine TypeV8
    Engine Size7.2L/440
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over
  • Valve FitmentSearch by engine
    MakePLYMOUTH
    Beginning Year1971
    Ending Year1974
    Engine TypeV8
    Engine Size7.2L/440
    Engine FamilyMopar big block RB
    Valve Installed Length0.100 in. over

Loading compatibility information...

Keep shopping

More from Manley Performance