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Manley Race Master Valves 11665B-1 Valve, Master, XH-426 Stainless Steel, Exhaust, 1.555 in. Diameter, 4.845 in. Length, Set of 8

SKU: MAN11665B-1

Valves

Manley Race Master Valves 11665B-1 Valve, Master, XH-426 Stainless Steel, Exhaust, 1.555 in. Diameter, 4.845 in. Length, Set of 8

SKU: MAN11665B-1

Valves
A$73.59
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.

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Description


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:29:39

Data: v4.2 - Upd: 2026-11-08 17:47:51

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Manley Performance, Manley
StreetFX SKU man11665B-1
SFX Item ID 4930363
Accounting SKU man-11665B-1
Manufacturer SKU 11665B-1
Manufacturer UPC 807298004907
Alternative References 11665B-1, MAN-11665B-1

Valve, Race Master, XH-426 Stainless Steel, Exhaust, 1.555 in. Diameter, 4.845 in. Length, Set of 8

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.

Product Attributes
BrandManley
Manufacturer's Part Number11665B-1
Part TypeValves
Product LineManley Race Master Valves
UPC807298004907
Valve PositionExhaust
Exhaust Valve Head Diameter (in.)1.555 in.
Exhaust Valve Head Diameter (mm)39.497mm
Exhaust Valve Stem Diameter (in.)0.313 in.
Exhaust Valve Stem Diameter (mm)7.95mm
Exhaust Overall Valve Length (in.)4.845 in.
Exhaust Overall Valve Length (mm)123.063mm
Undercut StemNo
Swirl-PolishedYes
Valve Tip Length (in.)0.120 in.
Valve Tip Length (mm)3.048mm
Valve MaterialXH-426 stainless steel
Lock Groove Quantity3-groove
Lock Groove StyleConventional
Approximate Weight (g)88
Valve Head Style20 degree dish
Valve Seat Width (in.)0.100 in.
QuantitySold individually.

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