S&S 89cc Super Stock Cylinder Heads

S&S 89cc cylinder heads are intended for stock engines and other small displacement applications. These heads are compatible with stock Harley-Davidson rocker covers. Must use S&S valve cover gasket kit part (not included) with stock rocker covers. They are a very economical performance upgrade designed for use with other performance enhancers and are machined to accept S&S compression releases.

Heads can be decked up to .060" to increase compression
89cc heads have 2.000" intake and 1.605" exhaust valves
S&S .640" lift valve springs
Stock Harley-Davidson rocker boxes can be retained if S&S manual compression release or S&S Easy Start cams are used
Must use S&S valve cover gasket kit part #90-4120 with stock rocker covers (sold separately)
Machined for 2008-'13 FL top motor mount
Includes 4 long head bolts for installation
Includes rocker base gaskets pn #90-4120
Sold in pairs
Made in the USA

Specification	Details
Color	Varies (make selection above)
Country of Origin	USA
Cylinder Head Volume	89cc
Engine Type	Twin Cam
Finish	Powder Coated
Material	Aluminum
Quantity	2

Vehicle Fitment

Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

CVO FXR2 1999
CVO FXR3 1999
CVO FXR4 2000
FLD Dyna Switchback 2012-2016
FLHR Road King 1999-2016
FLHRC Road King Classic 2007-2013
FLHRCI Road King Classic 1999-2006
FLHRI Road King 1999-2006
FLHRS Road King Custom 2004-2007
FLHRSI Road King Custom 2004-2006
FLHT Electra Glide Standard 1999-2009
FLHTC Electra Glide Classic 1999-2005, 2007-2013
FLHTCI Electra Glide Classic 1999-2006
FLHTCU Ultra Classic Electra Glide 1999-2016
FLHTCUI Ultra Classic Electra Glide 1999-2006
FLHTCUL Electra Glide Ultra Classic Low 2015-2016
FLHTI Electra Glide Standard 2003-2006
FLHTK Electra Glide Ultra Limited 2010-2016
FLHTKL Electra Glide Ultra Limited Low 2015-2016
FLHX Street Glide 2006-2016
FLHXI Street Glide 2006
FLHXS Street Glide Special 2014-2016
FLS Softail Slim 2012-2017
FLSS Softail Slim S 2016-2017
FLST Heritage Softail 2006
FLSTC Heritage Softail Classic 1999-2017
FLSTCI Heritage Softail Classic 2001-2006
FLSTF Softail Fat Boy 1999-2017
FLSTFB Softail Fat Boy Lo 2010-2016
FLSTFBS Softail Fat Boy S 2016-2017
FLSTFI Softail Fat Boy 2001-2006
FLSTI Heritage Softail 2006
FLSTN Softail Deluxe 2005-2017
FLSTNI Softail Deluxe 2005-2006
FLSTS Heritage Springer Softail 1999-2003
FLSTSB Softail Cross Bones 2008-2011
FLSTSC Softail Springer Classic 2005-2007
FLSTSCI Softail Springer Classic 2005-2006
FLSTSI Heritage Springer Softail 2001-2003
FLTR Road Glide 1999-2002, 2007-2009
FLTRI Road Glide 1999-2006
FLTRU Road Glide Ultra 2011-2013, 2016
FLTRX Road Glide 2015-2016
FLTRX Road Glide Custom 2010-2013
FLTRXS Road Glide Special 2015-2016
FXCW Softail Rocker 2008-2009
FXCWC Softail Rocker C 2008-2011
FXD Dyna Super Glide 1999-2005, 2007-2010
FXDB Dyna Street Bob 2007-2017
FXDBC Dyna Street Bob Limited 2016
FXDBI Dyna Street Bob 2006
FXDBP Dyna Street Bob 2016
FXDC Dyna Super Glide Custom 2005, 2007-2014
FXDCI Dyna Super Glide Custom 2005-2006
FXDF Dyna Fat Bob 2008-2017
FXDI Dyna Super Glide 2004-2006
FXDI35 35th Anniversary Dyna Super Glide 2006
FXDL Dyna Low Rider 1999-2005, 2007-2009, 2014-2017
FXDLI Dyna Low Rider 2004-2006
FXDLS Dyna Low Rider S 2016-2017
FXDS-CONV Dyna Convertible 1999-2000
FXDWG Dyna Wide Glide 1999-2005, 2007-2008, 2010-2017
FXDWGI Dyna Wide Glide 2004-2006
FXDX Dyna Super Glide Sport 1999-2005
FXDXI Dyna Super Glide Sport 2004-2005
FXDXT Dyna Super Glide T-Sport 2001-2003
FXS Softail Blackline 2011-2013
FXSB Softail Breakout 2013-2017
FXST Softail Standard 1999-2007
FXSTB Softail Night Train 1999-2009
FXSTBI Softail Night Train 2001-2006
FXSTC Softail Custom 1999, 2007-2010
FXSTD Softail Deuce 2000-2007
FXSTDI Softail Deuce 2001-2006
FXSTI Softail Standard 2001-2006
FXSTS Springer Softail 1999-2006
FXSTSI Springer Softail 2001-2006

Customer Reviews

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Not only did I get the 89 CC super stock heads I got the 585 complete Gear Drive and cam chest kit and the 100 in Big Bore Kit piston and rings very pleased with everything. can't stop smiling ear to ear. I would recommend all to anyone. Parts come complete with installation instructions. First time I ever went into the Harley motor. Built plenty of high-performance car engines, it was a breeze with your instructions.

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Questions & Answers

Ask Question

Is it a simple plug and play for a 2014 sgs 103

By Mark D.

I've done al of the other things. Intake, exaghast, cams, ignition and wires and plugs, clutch. I want to install heads and pop up pistons same size but more compression. Any thought or advise should be welcome. Thanks. Mark Dixon.

There really isn't much to it, for fitting these to your bike, that is. Just swap the OEM heads out, check the usual clearances &etc., and you're good. You'll want to be careful on piston choice with regard to cylinder head clearance, and that's explained in the instructions. And of course, you want to adjust fueling to suit, but given the other work you've had done already, I'm confident you understand that. Other than that, these heads will be a nice addition to your current setup, that's for sure!

By Tom

Answer Question

What size are the exhaust valves? Any other S&S parts required other than rocker cover gaskets? 2000 FXDS.

By Mark

The 1999-2005 twin cam heads that will fit a 2000 Harley Davidson FXDS-CONV Dyna Super Glide Convertible have 2.000" intake and 1.605" exhaust valves. If you are using stock pistons please check piston to valve clearance as valve relief pockets are often needed due to the large diameter valves, deeper pockets would be required for thinner head gaskets. Any required gaskets are included with the kit, save for the head gaskets. The reason those are not included is to allow for customizing of head gasket thickness to fine tune your compression ratio.

By Staff

Answer Question

Are they wrinkle black?

By HardLuck71

Yes! If you were to choose the black wrinkle color option, the S&S cylinder heads you will receive a set of cylinder heads with a powder-coated wrinkle black finish.

By Staff

Answer Question

Do these have provisions for manual compression releases?

By Gumby

All S&S cylinder heads for Twin Cam 88 with 89cc combustion chambers are machined to accept the S&S compression release.

By Staff

Answer Question

Does this kit come with both cylinder heads?

By Anon.

Yes, S&S 89cc Superstock cylinder heads come with both, the front and rear cylinder heads. You only need to order one kit to completely outfit your engine.

By Staff

Answer Question

Do these heads include the four long head bolts

By Bonez231

Yes, each kit ships with four head bolts for securing the Super Stock heads to their cylinders.

By Staff

Answer Question

R these heads a bathtub style or more like a hemi style combustion chamber. Hard to tell from pics.

By Gerry

S&S Superstock cylinder heads use a Hemi-style combustion chamber.

By Staff

Answer Question

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S&S 89cc Super Stock Cylinder Heads

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