Cylinder Heads & Parts – Evo

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AVV Compression Release Valves – Sold as a Pair. Overall Length = 1.080in. x Thread Length = 0.425in.
Part No: AV-JCR-10A
In Stock
$122.00
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AVV Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. Standard Outside Diameter. OEM Replacement.
Part No: AV-VG5700S
Out Of Stock
$20.00
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AVV Exhaust Valve. Fits Big Twin 1984-99. OEM Replacement.
Part No: AV-HD10
In Stock
$56.00
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AVV Exhaust Valve. Fits Evolution Big Twin 1984-99. High Flow.
Part No: AV-1610D
In Stock
$56.00
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AVV H/Duty Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. Standard Outside Diameter.
Part No: AV-VG5700
In Stock
$20.00
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AVV H/Duty Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. Standard Outside Diameter.
Part No: AV-VG5600
In Stock
$20.00
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AVV Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. Standard Outside Diameter. OEM Replacement.
Part No: AV-VG5600S
Out Of Stock
$20.00
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AVV Intake Valve. Fits Big Twin 1984-2004. OEM Replacement.
Part No: AV-HD11
In Stock
$56.00
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AVV Intake Valve. Fits Jims 120in. & 131in. Heads. High Flow Oversize Valve.
Part No: AV-2150
In Stock
$62.00
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AVV Intake Valve. Fits Merch Heads.
Part No: AV-2020A
In Stock
$33.00
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AVV OEM Style Valve Guide Seals. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003.
Part No: AV-K312420
In Stock
$13.00
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AVV Oversize Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2004. +.001in. Outside Diameter. OEM Replacement.
Part No: AV-VG5701S
In Stock
$20.00
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AVV Oversize H/Duty Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.002in. Outside Diameter.
Part No: AV-VG5702
In Stock
$20.00
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AVV Oversize H/Duty Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.004in. Outside Diameter.
Part No: AV-VG5704
In Stock
$20.00
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AVV Oversize H/Duty Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.025in. Outside Diameter.
Part No: AV-VG5725
In Stock
$11.00
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AVV Oversize H/Duty Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.002in. Outside Diameter.
Part No: AV-VG5602
In Stock
$20.00
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AVV Oversize H/Duty Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.004in. Outside Diameter.
Part No: AV-VG5604
In Stock
$11.00
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AVV Oversize H/Duty Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.025in. Outside Diameter.
Part No: AV-VG5625
In Stock
$11.00
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AVV Oversize Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2004. +.001in. Outside Diameter. OEM Replacement.
Part No: AV-VG5601S
In Stock
$20.00
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AVV Oversize Intake Valve. Fits Big Twin 1984-2004. High Flow .055in. Oversize Valve.
Part No: AV-1900
In Stock
$56.00
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AVV Oversize Intake Valve. Fits Big Twin 1984-2004. High Flow Oversize Valve.
Part No: AV-1940
In Stock
$56.00
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AVV Valve Guide Seals. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003 using AV&V Guides.
Part No: AV-K312530
In Stock
$13.00
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AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Beehive Springs with .600in. Lift.
Part No: AV-VSK6000S
In Stock
$246.00
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AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Beehive Springs with .650in. Lift.
Part No: AV-VSK6500
In Stock
$249.00
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AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Steel Double Springs with .600in. Lift.
Part No: AV-VSK600S
In Stock
$248.00
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AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Steel Double Springs with .650in. Lift.
Part No: AV-VSK650S
In Stock
$321.00
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AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Steel Double Springs with .675in. Lift. Titanium Retainers!
Part No: AV-VSK675T
In Stock
$590.00
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AVV Valve Spring Shims – 0.015in. Thick. Fits Big Twin 1984-2004. Pack of 20.
Part No: AV-VSS5015
In Stock
$42.00
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AVV Viton Style Valve Guide Seals Fits Big Twin 1984-2004, Sportster & Buell 1986-2003.
Part No: AV-V312421
In Stock
$12.00
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AVV Viton Valve Guide Seals. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003 using AV&V Guides.
Part No: AV-V312531
In Stock
$13.00
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Colony Machine Head Bolts with Polished 12 Point – Chrome. Fits Evo Big Twin 1985-1991, Sportster 1986-1992 & S&S Heads.
Part No: CM-2011-8
In Stock
$219.00
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Feuling 585in. Lift ECONO Performance Beehive Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003.
Part No: FE-1120
In Stock
$240.00
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James Gaskets Inc Valve Guide Seals. Fits Big Twin 1984-2004 & Sportster 1986-2004.
Part No: JGI-18001-83-A
In Stock
$17.00
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S&S 76cc Cylinder Head Kit – Black. Fits Big Twin 1986-1999.
Part No: SS106-6064
In Stock
$2,673.00
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S&S 76cc Cylinder Head Kit – Silver. Fits Big Twin 1986-1999.
Part No: SS106-6059
In Stock
$2,527.00
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S&S Compression Release Block Off Plugs. Sold as a Pair
Part No: SS90-4916-2
In Stock
$93.00
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S&S Compression Release Solenoid Cap – Silicone.
Part No: SS55-1009
In Stock
$14.00
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S&S Electric Compression Release Assembly. Replacement for Kit # SS90-4915.
Part No: SS90-4914
In Stock
$361.00
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S&S Electric Compression Release Kit.
Part No: SS90-4915
In Stock
$835.00
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S&S Exhaust Valve. Fits 89cc or 91cc S&S Heads.
Part No: SS90-2001
In Stock
$153.00
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S&S Head Bolt Covers. Fits S&S Head Bolts.
Part No: SS50-0333
In Stock
$171.00
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S&S Head Dowel. Fits Evo 1984-1999 & Sportster 1986-2021.
Part No: SS50-8023
In Stock
$11.00
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S&S Intake Valve. Fits 89cc or 91cc S&S Heads.
Part No: SS90-2000
In Stock
$77.00
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S&S Valve Guide Seals. Fits S&S Heads with Cast Iron Guides.
Part No: SS90-2158
In Stock
$45.00
Add to cart

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AVV Compression Release Valves – Sold as a Pair. Overall Length = 1.080in. x Thread Length = 0.425in.

AVV Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. Standard Outside Diameter. OEM Replacement.

AVV Exhaust Valve. Fits Big Twin 1984-99. OEM Replacement.

AVV Exhaust Valve. Fits Evolution Big Twin 1984-99. High Flow.

AVV H/Duty Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. Standard Outside Diameter.

AVV H/Duty Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. Standard Outside Diameter.

AVV Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. Standard Outside Diameter. OEM Replacement.

AVV Intake Valve. Fits Big Twin 1984-2004. OEM Replacement.

AVV Intake Valve. Fits Jims 120in. & 131in. Heads. High Flow Oversize Valve.

AVV Intake Valve. Fits Merch Heads.

AVV OEM Style Valve Guide Seals. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003.

AVV Oversize Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2004. +.001in. Outside Diameter. OEM Replacement.

AVV Oversize H/Duty Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.002in. Outside Diameter.

AVV Oversize H/Duty Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.004in. Outside Diameter.

AVV Oversize H/Duty Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.025in. Outside Diameter.

AVV Oversize H/Duty Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.002in. Outside Diameter.

AVV Oversize H/Duty Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.004in. Outside Diameter.

AVV Oversize H/Duty Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.025in. Outside Diameter.

AVV Oversize Intake Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2004. +.001in. Outside Diameter. OEM Replacement.

AVV Oversize Intake Valve. Fits Big Twin 1984-2004. High Flow .055in. Oversize Valve.

AVV Oversize Intake Valve. Fits Big Twin 1984-2004. High Flow Oversize Valve.

AVV Valve Guide Seals. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003 using AV&V Guides.

AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Beehive Springs with .600in. Lift.

AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Beehive Springs with .650in. Lift.

AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Steel Double Springs with .600in. Lift.

AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Steel Double Springs with .650in. Lift.

AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Steel Double Springs with .675in. Lift. Titanium Retainers!

AVV Valve Spring Shims – 0.015in. Thick. Fits Big Twin 1984-2004. Pack of 20.

AVV Viton Style Valve Guide Seals Fits Big Twin 1984-2004, Sportster & Buell 1986-2003.

AVV Viton Valve Guide Seals. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003 using AV&V Guides.

Colony Machine Head Bolts with Polished 12 Point – Chrome. Fits Evo Big Twin 1985-1991, Sportster 1986-1992 & S&S Heads.

Feuling 585in. Lift ECONO Performance Beehive Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003.

James Gaskets Inc Valve Guide Seals. Fits Big Twin 1984-2004 & Sportster 1986-2004.

S&S 76cc Cylinder Head Kit – Black. Fits Big Twin 1986-1999.

S&S 76cc Cylinder Head Kit – Silver. Fits Big Twin 1986-1999.

S&S Compression Release Block Off Plugs. Sold as a Pair

S&S Compression Release Solenoid Cap – Silicone.

S&S Electric Compression Release Assembly. Replacement for Kit # SS90-4915.

S&S Electric Compression Release Kit.

S&S Exhaust Valve. Fits 89cc or 91cc S&S Heads.

S&S Head Bolt Covers. Fits S&S Head Bolts.

S&S Head Dowel. Fits Evo 1984-1999 & Sportster 1986-2021.

S&S Intake Valve. Fits 89cc or 91cc S&S Heads.

S&S Valve Guide Seals. Fits S&S Heads with Cast Iron Guides.

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