99-04 Twin Cam (NU) 1 2 3 … 13 – BikersHouse

Manley Manley, Race Master exhaust valve set. STD

Tue, 23 Dec 2025 07:09:42 +0000

ManleyManley, Race Master exhaust valve set. STD 513847

fits 66-84 Shovelhead (NU)

Quality replacement valves, lower priced than the Manley ‘Severe Duty’ valves. Still offering a significant improvement over the OEM valve. Stainless steel construction with chrome plated stem and hardened tips. Excellent stock overhaul valve. Race Master valves are manufactured of stainless XH-426 for exhaust and stainless NK-842 for intake and offer great ultimate tensile strength, combining superior quality at a competative price. Okay for stock or racing upto 8000 RPM.

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Manley Manley, Severe Duty stainless valve, exhaust. STD

Tue, 23 Dec 2025 05:16:40 +0000

ManleyManley, Severe Duty stainless valve, exhaust. STD 501270

fits 84-99 Evo Big Twin (NU)

Standard size replacement. Dimensions: 1.615″ head dia. x .3095″ stem dia. Standard overall length. Severe Duty valves. Proven quality over many years. Manufactured from high temperature stainless alloy to a perfect finish. Manley valves feature swirl polished, performance orientated shapes and durable chrome plated stems. Up to 30% weight reduction over stock components. Manley’s ‘Severe Duty’ valves insure a stable valve train, even at high R.P.M.’s. Note: Evo Big Twin intake valves are identical to 99-04 Twin Cam valves. Evo exhaust valves are 1.615″, Twin Cam 1.565″ in diameter. Length is identical. 1.615″ valves can be installed on stock seats of Twin Cam models, after valve seat machining. Information supplied by Manley Performance Products, Inc.

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Kibblewhite KPMI, Black Diamond valve, intake. Oversize

Mon, 22 Dec 2025 11:41:23 +0000

KibblewhiteKPMI, Black Diamond valve, intake. Oversize 524131

fits 36-47 Knucklehead (NU)

Standard size replacement with oversized head. Dimensions: 1.940″ oversized head dia. x 0.3765″ stem dia. x 3.590″ Overall length. KPMI valves are manufactured in the U.S.A. by a dedicated staff and personnel with hands-on experience in stock and high performance. Quality materials and the latest CNC and 3-D computer modelling equipment make sure each and every Kibblewhite Precision Machining valve train component is top of the line. All Black Diamond valves are one-piece Stainless Steel forgings with a black nitrided finish. Repl. none.

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Home > Parts > Intake > KPMI, Black Diamond valve, intake. Oversize