S&S Cycle 99-06 BT Easy Start 570GE Gear Drive Camshaft Kit (Part #106-5243)Big Inches, Hard Starts, Dead Batteries. This Fixes All Three. You built a big twin. Maybe 95 inches. Maybe 103. Good compression. Runs like a beast. But starting it? That is a different story. The starter labors. The battery drains. Hot starts are a nightmare. You have been there.S&S fixed that problem a long time ago. This is the 570GE Easy Start Cam Kit. Part #106-5243. Fits 1999 to 2006 Harley-Davidson Twin Cam Big Twins .It wakes up the motor without killing your starter and battery. And it is a gear drive. No timing chains. No tensioners. Just gears that mesh and stay in time forever.How Does Easy Start Work? The cam has a special lobe inside. When you hit the starter, it lifts the exhaust valve slightly . That lets compression bleed off while cranking. The starter spins freely. The battery does not get hammered. Once the engine fires and RPM climbs, the lobe retracts by centrifugal force. The engine runs with full compression. No power lost. No performance sacrificed .S&S tested these for 10,000 starts without running the battery down . That is confidence.Why Gear Drive? The stock Twin Cam timing chains stretch. Tensioners wear out. Plastic pieces break. It is a known problem. This kit replaces all of that with gears. Four gears. Inner gears. Outer gears. No chains. No tensioners. No worrying about plastic breaking and sending debris through your oil pump .Timing stays dead on. Always. Valve timing accuracy is greatly improved .What Is In The Box? Complete gear drive cam kit. Two camshafts with inner gears. Outer drive gears. Installation kit. Bearings. Gaskets. Hardware .Specs For The 570GEIntake Lift: 0.570" Exhaust Lift: 0.570" Intake Duration: 240° Exhaust Duration: 250° Intake Opens: 20° BTDC Intake Closes: 40° ABDC Exhaust Opens: 55° BBDC Exhaust Closes: 20° ATDC Lobe Separation: 103.75° Power Range: 3200-5700 RPM Vehicle Fitment  Ford F-150 Vehicle FitmentYearModel / TrimEngineDisplacementCategory2018-2022King RanchV62993ccExterior Trim2015-2025King RanchV63496ccExterior Trim2015-2023King RanchV84951ccExterior Trim2018-2023King RanchV85038ccExterior Trim2015-2023LariatV6-Exterior Trim2018-2022LariatV62993ccExterior Trim2015-2025LariatV63496ccExterior Trim2015-2025LariatV84951ccExterior Trim2018-2025LariatV85038ccExterior Trim2016-2023LimitedV63496ccExterior Trim2018-2022PlatinumV62993ccExterior Trim2015-2025PlatinumV63496ccExterior Trim2015-2023PlatinumV84951ccExterior Trim2018-2023PlatinumV85038ccExterior Trim2018-2025Police ResponderV63496ccExterior Trim2017-2025RaptorV63496ccExterior Trim2023-2025RaptorV85163ccExterior Trim2016-2025SSVV63496ccExterior Trim2016-2025SSVV84951ccExterior Trim2018-2025SSVV85038ccExterior Trim2024-2025STXV6-Exterior Trim2024-2025STXV84951ccExterior Trim2024-2025STXV85038ccExterior Trim2021-2025TremorV63496ccExterior Trim2023-2025TremorV85038ccExterior Trim2015-2025XLV6-Exterior Trim2018-2022XLV62993ccExterior Trim2018-2023XLV63343ccExterior Trim2015-2025XLV63496ccExterior Trim2015-2025XLV84951ccExterior Trim2018-2025XLV85038ccExterior Trim2015-2025XLTV6-Exterior Trim2018-2022XLTV62993ccExterior Trim2018-2023XLTV63343ccExterior Trim2015-2025XLTV63496ccExterior Trim2015-2025XLTV84951ccExterior Trim2018-2025XLTV85038ccExterior Trim2015-2020Fits Ford F-150 with 6.5ft Standard Bed. Compatible with XL, XLT, Lariat, King Ranch, Platinum, Limited, and Raptor trims. Fits all engine options.  Harley-Davidson Twin Cam Big Twins FitmentFits1999-2006 Harley-Davidson Twin Cam Big Twins Dyna, Softail & Touring Models 88, 95, 96 & 103 Cubic Inch Engines Compression Ratios Below 10:1Does NOT Fit2006 Dyna Models (Different Setup) Models with OEM Compression Releases Kickstart Models  FAQDo I need high-lift valve springs? Yes. The 570GE requires high-lift springs. Installer must also check coil bind, valve-to-valve clearance, and valve-to-piston clearance .Will this make my engine louder?  Gear drives produce more valvetrain noise than chain drives. That is normal. If you hear clicking below 900 RPM, adjust idle speed to 1000-1100 RPM .Does this kit come with everything I need?  Yes. Complete gear set, installation hardware, bearings, and gaskets .Will this fit my 2006 Street Glide? Yes. 2006 Street Glide is listed as compatible . The exception is 2006 Dyna models.Why gear drive over chain drive?  Gear drives eliminate timing chain lash. No tensioners to fail. Timing stays accurate forever .