S&S Cycle 124" Hot Set Up Kits

S&S 124" hot set up kits are performance enhancing parts for those who want some serious horsepower from their V-Twin bikes. The kit consists of parts that have been crafted from premium materials making them more durable. Improved durability makes these parts long lasting and therefore economical. Durability is especially important when enduring damages that may be caused by high performance engines. These kits contain all the equipment you need to rebuild or upgrade your engine for more horsepower. The parts contained in these kits have been tested well tested for guaranteed performance and reliability. [S&S Cycle]

• 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, meaning no hassles registering or insuring
• Chain drive S&S 640 Easy Start Cams included!
• Silver or wrinkle black powdercoat finish heads match factory finish, giving bike a “sleeper” advantage
• .045" MLS head gaskets
• Requires crankcase boring –S&S can provide quality, professional machine shop and engine building service through our remanufacturing program. Contact your S&S customer service representative for details.
• Adds .075" to engine height
• Three versions of the 124" Hot Set Up Kit
  • Option 1 (10.8:1 compression ratio) includes:
    • S&S 91cc high flow Super Stock^® heads
    • Flat topped pistons
  • Option 2 (11:1 compression ratio, works with previously purchased S&S 89cc high flow Super Stock^® heads) includes:
    • Flat topped pistons
  • Option 3 (10.4:1 compression ratio, works with stock cylinder heads) includes:
    • 10.9cc Dished pistons

• Stock crankcases need to be machined to accept new cylinders. S&S can provide this service for you!
• S&S Easy Start Cams can 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 to the H-D^® #25284-08 or #25284-11 hybrid plate. This kit updates the problematic spring loaded chain tensioners to more reliable hydraulic tensioners and also upgrades the oil pump.
• 2008-up touring models with electronic throttle control require Screamin' Eagle^® 58mm throttle body and Harley-Davidson^® race tuner or Dynojet^® Power Vision flash tuner.
• Main Bearing Note: S&S flywheel assemblies for 1999-'12 big twin engines are designed for use with Timken^® style sprocket shaft bearings. They will fit directly in stock Harley-Davidson^® 1999-’02 crankcases and in all S&S crankcases for Twin Cam 88^® engines with no modifications. S&S does not produce a set of flywheels that is a direct replacement for the 2003 and later big twin engines. Stock 2003 and later engines use the same roller type bearing for the sprocket shaft that is used on the pinion shaft. However, S&S flywheels may be used in 2003 and later engines with the installation of the Harley-Davidson^® bearing kit #24004-03B. These crankcases use a roller type bearing for the sprocket shaft. 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.