S&S Cycle - S&S Performance Parts 2025 L - Volume 67

1999-'06

www.sscycle.com

®

1 -2017-UP 2- 2007-'17 3 -1999-'06 4 -1984-'99 5 -1936-'84 6 -XL-RA1250 7 -BELTS & GASKETS 8 -TOOLS 9 -WARRANTY 10 -APPENDIX Year

Fitment 1999-'06 big twin models Features And Benefits

• Huge displacement increase means huge power increase • Stock crankcases, cylinder heads, oil pump, and cam cover

can be reused, saving hundreds of dollars • Original engine serial numbers are retained • Gear drive S&S 640 Easy Start Cams included! • Wrinkle black powder coat finish heads match factory finish, giving bike a "sleeper" advantage • 045" MLS (multi-layered steel) head gaskets • Adds 096" to engine height • Kits with S&S heads use stock length manifolds (S&S size 410)

900-0565

124" Hot Set Up Kit® Specifications

Piston Type/Compression Ratio 91cc S&S Heads

Cylinder Length

Stroke

Displacement

Bore

89cc S&S Heads

85cc Stock Heads

1999–'06

4 5/8"

124"

4 1/8" 5 013"

Flat top forged/10 8:1

Flat top forged/11:1

Forged, 10 9cc dish/10 4:1

Cylinder w/piston kits include fitted pistons and cylinders that require no boring or honing.

124" Hot Set Up Kits® For Harley-Davidson® Twin Cam 88®/88b™ Engines (Kits include S&S® Super Stock® 91cc Cylinder Heads) (10.8:1 Compression) Model or Engine Type

Finish

Part #

1999–2006 Twin Cam 88 touring and Dyna® (except 2006 Dyna® models)* 2000–2006 Twin Cam 88B Softail® w/Balancer

Wrinkle Black

900-0564

Wrinkle Black 900-0565 NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. NOT LEGAL FOR SALE OR USE NATIONWIDE ON ANY FEDERAL POLLUTION CONTROLLED MOTOR VEHICLE UNDER THE CLEAN AIR ACT *For 2006 Dyna® 124” Kits, see Section 2.

Requires recalibration S&S Easy Start Cams save you money—no need to buy compression releases or S&S rocker covers Note when using 1999–'06 chain drive cams: For lifts over 510", S&S strongly recommends that the stock chain drive be upgraded to the S&S gear drive or S&S TC3 oil pump and cam plate This kit updates the problematic spring loaded chain tensioners to more reliable hydraulic tensioners and also upgrades the oil pump Main Bearing Note: S&S flywheel assemblies included in a 124" S&S Hot Set Up Kit® for 1999–'15 big twin engines are designed for use with Timken® sprocket shaft bearings They will fit directly in stock 1999–’02 Harley-Davidson® crankcases and in all S&S crankcases for 1999–'15 big twin engines, with no modifications However, stock 2003 and later engines use a roller type bearing for the sprocket shaft, and will require modification Due to the amount of power these engines produce with an S&S Hot Set Up Kit, S&S strongly recommends retrofitting 2003–'15 model crankcases to accept a Timken sprocket shaft bearing A Timken conversion sleeve such as Screamin' Eagle® #34822-08 or Jim's® #956 may be used A charging system spacer for 1999–'02 model year is also required This kit will require that the case be bored to accept the larger cylinders If you choose not to convert your crankcases to a Timken sprocket shaft bearing, S&S flywheels may be used in 2003 and later engines with the installation of the Harley Davidson® bearing kit #24004-03B This bearing kit adapts the S&S sprocket shaft to be compatible with stock roller type bearings Verify that the bearing kit contains the 24604-00D or 24607-07 sprocket shaft bearing Do not use a 24604-00, 24604-00A, 24604-00B or 24604-00C bearing Please be advised that if this type of bearing is used, sprocket shaft bearing failure WILL NOT be covered under warranty Kits with S&S heads are machined special to compensate for engine height change to accomodate a stock length manifold When using a kit with stock cylinder heads, S&S recommends using the appropriate length manifold For a 124" with stock OEM cylinder heads, the standard manifold length is 417 Center case bolt between cylinders will use waisted bolt kit 900-0807

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