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S&S 89cc Super Stock Cylinder Heads

(1 review)

Item: 342422

$1390.57 – $1758.56

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Description Fitment Reviews Q&A

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.

Harley Davidson
  • 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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By   on  Verified Purchaser

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

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

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.

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?

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?

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?

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

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.

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

By Staff
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