FRONT END SECTION RED PART NUMBERS INDICATE NEW PARTS 3-33 1 2 3 4 5 6 7 8 9 10 11 CONTENTS ELECTRICAL FRAME FRONT END CONTROL WHEEL ENGINE DRIVE TRAIN FUEL EXHAUST GENERAL REFERENCE Suspension Drop Kits & Lowering Kits DROP INTM FRONT FORK LOWERING KIT FOR BIG TWIN SLAMMER SUSPENSION DROP KITS FOR BIG TWIN Model & Year Part # FXST/FLST 1984/2017 & FLH/FLT 1980/2013 36553 FLH/FLT 2002/2005 (Left cartridge models) 36554 Touring Models 2017/Later 49mm 36555 Dyna 1991/2005 (except FXDWG) 36551 Dyna 2006/Later 36552 Sportster 1988/Later (except Sport) 36550 Model & Year Part # Touring Models 1980/2013 36544 Softail 1989/1999 36545* Softail 2000/Later 36546* Dyna 1991/2005 (except FXDWG) 36542 Dyna 2006/Later 36543 Sportster 1988/2003 36540 Sportster 2004/Later 36541 36543 36552 • Go from stock to slammed in about an hour. • The Slammer is a complete lowering kit in one box. • No dissassembly of forks required, they can stay on the bike while you work. • No special tools needed for installation. • The shocks included in the kit lower the rear up to 2 1/2” and the fork springs lower the front up to 2”. • Kit includes two 10 1/2” shock absorbers, two Slammer fork springs, two helper springs, two spring spacers, one spanner wrench, one lube packet, and complete installation instructions. • The ultimate time saver. • Progressive’s new Drop InTM Fork Lowering Kit turns a tedious undertaking into a half hour job. • Front Fork Lowering kit can take up to 2” out of the front end. • No special tools needed for installation. • Kit includes shorter forksprins, secondary compensator springs, pvc spacers (used on Dyna only), and complete instructions. * Includes rear lowering kit, NOT replacement shocks. Model & Year Part # All models with 41mm Showa forks Late 1977/Later 36524 (except FLT models 2002/Later) All models with 39mm forks 1988/Later (except FXDX) 36523 • Progressively wound springs are wound tighter at the top than the bottom creating excellent spring action over small bumps as well as large bumps. • All kits include two top out springs. Install just one on each side if you want your front end lowered 1” or install both top out springs if you want to lower your front end 2”. • Instructions are included. • To help maintain the OE steering geometry, Progressive Suspension recommends lowering the rear suspension also. • See Page 3-31 for fork oil. Note: As with any lowering operation, always check related parts such as headlight aim and jiffy stand lean angle. FRONT FORK LOWERING KITS FOR BIG TWIN & SPORTSTER
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