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 Series Stainless Steel Valves 11661-1 Valve, Race, XH-426 Steel, Exhaust, 1.590 in. Diameter, 4.923 in. Length, Set of 8

SKU: MAN11661-1

Valves

Manley Race Series Stainless Steel Valves 11661-1 Valve, Race, XH-426 Steel, Exhaust, 1.590 in. Diameter, 4.923 in. Length, Set of 8

Manley Performance

Manley Performance

Manley Race Series Stainless Steel Valves 11661-1 Valve, Race, XH-426 Steel, Exhaust, 1.590 in. Diameter, 4.923 in. Length, Set of 8

SKU: MAN11661-1

Valves
A$108.05
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.

Added to cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Manley Race series performance valves are a great choice for your bracket, oval track, or high performance street engine. All valves are made from stainless steel (intakes are NK-842; exhausts are XH-426) with chrome stems and hardened valve tips. In addition to being made from high-quality materials, Race series valves are swirl polished and fully machined.

Part Type

Valves

Data: v4.2 - Upd: 2026-10-14 10:08:25

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11661-1
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Race Series Stainless Steel Valves
Product Attributes - UPC
807298051444
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.590 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
40.386mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.314 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
7.96mm
Product Attributes - Exhaust Overall Valve Length (in.)
4.923 in.
Product Attributes - Exhaust Overall Valve Length (mm)
125.044mm
Product Attributes - Undercut Stem
Yes
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.160 in.
Product Attributes - Valve Tip Length (mm)
4.064mm
Product Attributes - Valve Material
XH-426 stainless steel
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
93
Product Attributes - Valve Head Style
7 degree dish
Product Attributes - Valve Seat Width (in.)
0.115 in.
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11661-1
SFX Item ID 4931040
Supplier Item Code 4931040
Manufacturer SKU 11661-1
Manufacturer UPC 807298051444
Alternative References XH-426

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year2008
    Ending Year2017
    Engine TypeV8
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Valve Installed LengthStock
    Cylinder Head TypeL92
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year2010
    Ending Year2017
    Engine TypeV8
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Valve Installed LengthStock
    Cylinder Head TypeL92

Loading compatibility information...

Keep shopping

More from Manley Performance