99011-2 Severe Duty stainless valve, exhaust. STD
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Specifications
- Brand
- Manley
- Part Number
- 99011-2
- OEM Reference
- 18089-80
- Pack Quantity
- Sold as pr
- Category
- Valves Exhaust
- VAT Rate
- 20%
About This Product
These Manley Severe Duty exhaust valves are built for 1948 to 1983 Panhead and Shovelhead engines. Sold as a pair, they are a standard-size replacement for OEM 18089-80, featuring a 1.75-inch head diameter and a .3745-inch stem. Manley manufactures these from a high-temperature stainless alloy with a swirl-polished finish to optimize exhaust flow. The chrome-plated stems ensure a long service life in the guides. Because they are significantly lighter than stock valves, they help prevent valve float and ensure a stable valvetrain at higher engine speeds. These are the go-to choice for any classic Big Twin rebuild where performance and reliability are the top priorities.
Manufacturer part number: 99011-2.
Fitment
48-83 Panhead; Shovelhead
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