BC Racing BR Series Coilovers for the 1999-2005 Lexus IS300 (GXE10/JEC10) offer the most affordable entry into coilover suspension without sacrificing performance, comfort, build quality, vehicle height, or handling. This is done by extensively testing each vehicle, then refining the coilover characteristics as many times as needed to ensure the most well-balanced and affordable aftermarket suspension conceivable. BC Racing takes great pride in choosing spring rates for our off-the-shelf kits that strike the perfect balance between comfort and performance so you're never stuck with an oversprung suspension like many other brands sell. BC Racing offers one of the widest ranges of damping adjustment with 30-clicks of compression/rebound adjusted simultaneously on the BR Series. With meticulously chosen spring rates, damper valving, and one of the widest adjustment ranges in the industry, you can't go wrong with the BC Racing BR Series Coilover System. BC Racing BR Series is the most popular coilover option from BC Racing. Features Highly customizable Mono-tube shock design Linear piston and damping curve Height adjustment independent of spring compression 30-clicks of simultaneous compression/rebound adjustment Front camber plates standard on applicable kits Rear camber plates available for applicable kits Custom spring rates and Swift Springs available Custom valving or valving paired for custom spring rates 2 year warranty against manufacturing defects Fully rebuildable with replacement parts Please note that not all vehicles can use camber plates in the front and/or rear. Most vehicles will have non-adjustable top mounts included, and some will reuse OEM upper mounts. Specifications Part Number R-01-BR Part Name BR Series Coilovers Vehicle 1999-2005 Lexus IS300 Chassis Code GXE10/JEC10 Front Springs (kg/mm) 62-200-12kg Rear Springs (kg/mm) 62-200-10kg Front Swift Springs (kg/mm) 62-203-X Rear Swift Springs (kg/mm) 62-203-X Extreme Low - Front Springs (kg/mm) 62-200-14kg Extreme Low - Rear Springs (kg/mm) 62-200-12kg Extreme Low - Front Swift Springs (kg/mm) 62-203-X Extreme Low - Rear Swift Springs (kg/mm) 62-203-X Front Camber Plates Not Applicable Rear Camber Plates Not Applicable Note 1 Extreme low by default Note 2 Super extreme low available Vehicle Fitment 1999 Lexus IS300 (GXE10/JEC10) 2000 Lexus IS300 (GXE10/JEC10) 2001 Lexus IS300 (GXE10/JEC10) 2002 Lexus IS300 (GXE10/JEC10) 2003 Lexus IS300 (GXE10/JEC10) 2004 Lexus IS300 (GXE10/JEC10) 2005 Lexus IS300 (GXE10/JEC10)