Skunk2 Universal Race Spring (Straight) - 6 in.L - 2.5 - 521-99-1000

Skunk2 Race Springs for Pro-C or Pro-S II Coilovers allow you to fine tune handling performance and driver feel through customized spring rates and ride heights. All Skunk2 Race Springs are CNC-wound using the highest quality SAE 9254V spring steel, shot-peen stress relieved, and corrosion-protected thanks to powdercoating and specialized phosphate treating processes.

Suspension components are key to making sure you car is riding smoothly on or off the road. With upgraded suspension components, you can unlock the full potential of your vehicles performance.

Lowering springs are a cost effective way of lowering your vehicle. Lowering springs are designed to maintain most of your car factory suspension travel while gaining a 15% increase in spring rate. If your are looking to maintain or improve ride quality while also lowering your car, we recommend coilovers first, but if your are on a budget, your can't go wrong with a set of lowering springs.

WARNING: Cancer & Reproductive Harm. For more information, go to www.P65Warnings.ca.gov

All Skunk2 products are carefully planned and designed in-house using the latest computer simulation and modeling techniques, followed by careful testing in controlled laboratory environments using state-of-the-art equipment. Each product is then subjected to rigorous dyno, street, and race track testing to ensure proper performance in the most extreme conditions. For these reasons, top street cars and race cars worldwide rely on Skunk2 products. As part of Skunk2’s commitment to developing industry-leading products, we’ve remained actively involved in various forms of motorsports through technical partnerships, sponsorships, as well as with our own race vehicles for more than 15 years. We’ve gone on to secure a number of drag racing and road racing records and championships, including earning the title of the world’s first 10-second naturally aspirated Honda. Racing provides us with the data necessary to produce high-performance parts utilizing innovative designs, advanced metal alloys, cutting-edge manufacturing methods, and stringent quality-control measures. Driven by the desire to make things go faster, Skunk2’s staff is comprised of industry leaders, racers, and enthusiasts who are passionate about what they do and understand what other enthusiasts want. Our perspective is shaped by real-world racing experiences as well as by practical science, and that's precisely what makes Skunk2 products so good. Firmly grounded in our understanding of engineering, we make every effort to embrace advanced technology. Our goal is to make performance and technology accessible to other enthusiasts through innovative manufacturing techniques. Since 1994, we’ve released a number of industry-leading products, including the first cast aluminum, high-performance intake manifold, cutting-edge composite fuel rails, and valvetrain components made from premium materials. Skunk2 is acclaimed as being the first U.S.-based sport compact parts manufacturer to offer CNC-machined, adjustable cam gears in 1995 as well as billet camshafts in 1999. As a result of continually pushing our engine development capabilities in the racing world, we’ve discovered a number of exciting “power secrets” that are incorporated into every Skunk2 product. Today we continue our tradition of creating leading-edge products through a state-of-the-art engineering and R&D department as well as through extensive engine development and testing both on the race track and the street.

• 1988 Honda Civic Base
• 1988 Honda Civic DX
• 1988 Honda Civic LX
• 1988 Honda Civic RT 4WD ( 4 door Wagon, U/KHP 4 Cylinder Naturally Aspirated 1.6L, 4WD 5speed Manual)
• 1988 Honda Civic Wagovan
• 1989 Honda Civic Base
• 1989 Honda Civic DX
• 1989 Honda Civic LX
• 1989 Honda Civic RT 4WD
• 1989 Honda Civic Si ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.6L, FWD 5speed Manual)
• 1989 Honda Civic Wagovan
• 1990 Acura Integra GS
• 1990 Acura Integra LS
• 1990 Acura Integra RS
• 1990 Honda Civic Base
• 1990 Honda Civic DX
• 1990 Honda Civic EX
• 1990 Honda Civic LX
• 1990 Honda Civic RT 4WD
• 1990 Honda Civic Si ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.6L, FWD 5speed Manual)
• 1991 Acura Integra GS
• 1991 Acura Integra LS
• 1991 Acura Integra RS
• 1991 Honda Civic Base ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.5L, FWD 4speed Manual)
• 1991 Honda Civic DX
• 1991 Honda Civic EX
• 1991 Honda Civic LX
• 1991 Honda Civic RT 4WD
• 1991 Honda Civic Si ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.6L, FWD 5speed Manual)
• 1992 Acura Integra GS
• 1992 Acura Integra GS-R ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.7L, FWD 5speed Manual)
• 1992 Acura Integra LS
• 1992 Acura Integra RS
• 1992 Honda Civic CX ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.5L, FWD 5speed Manual)
• 1992 Honda Civic DX
• 1992 Honda Civic EX
• 1992 Honda Civic LX
• 1992 Honda Civic Si ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.6L, FWD 5speed Manual)
• 1992 Honda Civic VX ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.5L, FWD 5speed Manual)
• 1993 Honda Civic CX ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.5L, FWD 5speed Manual)
• 1993 Honda Civic DX
• 1993 Honda Civic EX
• 1993 Honda Civic LX
• 1993 Honda Civic Si ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.6L, FWD 5speed Manual)
• 1993 Honda Civic VX ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.5L, FWD 5speed Manual)
• 1993 Acura Integra GS
• 1993 Acura Integra GS-R ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.7L, FWD 5speed Manual)
• 1993 Acura Integra LS
• 1993 Acura Integra RS
• 1994 Honda Civic CX ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.5L, FWD 5speed Manual)
• 1994 Honda Civic DX
• 1994 Honda Civic EX
• 1994 Honda Civic LX
• 1994 Honda Civic Si
• 1994 Honda Civic VX ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.5L, FWD 5speed Manual)
• 1994 Acura Integra GS-R
• 1994 Acura Integra LS
• 1994 Acura Integra RS
• 1995 Acura Integra GS-R
• 1995 Acura Integra LS
• 1995 Acura Integra RS
• 1995 Acura Integra Special Edition
• 1995 Honda Civic CX ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.5L, FWD 5speed Manual)
• 1995 Honda Civic DX
• 1995 Honda Civic EX
• 1995 Honda Civic LX
• 1995 Honda Civic Si
• 1995 Honda Civic VX ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.5L, FWD 5speed Manual)
• 1996 Acura Integra LS
• 1996 Acura Integra RS
• 1996 Acura Integra Special Edition
• 1996 Acura Integra GS-R
• 1996 Honda Civic CX
• 1996 Honda Civic DX
• 1996 Honda Civic EX
• 1996 Honda Civic HX
• 1996 Honda Civic LX
• 1997 Acura Integra GS
• 1997 Acura Integra GS-R
• 1997 Acura Integra LS
• 1997 Acura Integra RS
• 1997 Acura Integra Type R ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Manual)
• 1997 Honda Civic CX
• 1997 Honda Civic DX
• 1997 Honda Civic EX
• 1997 Honda Civic HX
• 1997 Honda Civic LX
• 1998 Acura Integra GS
• 1998 Acura Integra GS-R
• 1998 Acura Integra LS
• 1998 Acura Integra RS
• 1998 Acura Integra Type R ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Manual)
• 1998 Honda Civic CX
• 1998 Honda Civic DX
• 1998 Honda Civic EX
• 1998 Honda Civic GX
• 1998 Honda Civic HX
• 1998 Honda Civic LX
• 1999 Acura Integra GS
• 1999 Acura Integra GS-R
• 1999 Acura Integra LS
• 1999 Honda Civic CX
• 1999 Honda Civic DX
• 1999 Honda Civic EX
• 1999 Honda Civic GX
• 1999 Honda Civic HX
• 1999 Honda Civic LX
• 1999 Honda Civic Si ( 2 door Coupe, U/KHP 4 Cylinder Naturally Aspirated 1.6L, FWD 5speed Manual)
• 1999 Honda Civic Value Package ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.6L, FWD 4speed Automatic)
• 2000 Honda Civic CX
• 2000 Honda Civic DX
• 2000 Honda Civic EX
• 2000 Honda Civic GX
• 2000 Honda Civic HX
• 2000 Honda Civic LX
• 2000 Honda Civic Si ( 2 door Coupe, U/KHP 4 Cylinder Naturally Aspirated 1.6L, FWD 5speed Manual)
• 2000 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.0L, RWD 6speed Manual)
• 2000 Acura Integra GS
• 2000 Acura Integra GS-R
• 2000 Acura Integra LS
• 2000 Acura Integra Type R ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Manual)
• 2001 Acura Integra GS
• 2001 Acura Integra GS-R
• 2001 Acura Integra LS
• 2001 Acura Integra Type R ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Manual)
• 2001 Honda Civic DX
• 2001 Honda Civic EX
• 2001 Honda Civic GX
• 2001 Honda Civic HX
• 2001 Honda Civic LX
• 2001 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.0L, RWD 6speed Manual)
• 2002 Acura RSX Base
• 2002 Acura RSX Type-S ( 2 door Coupe, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 6speed Manual)
• 2002 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.0L, RWD 6speed Manual)
• 2002 Honda Civic DX
• 2002 Honda Civic EX
• 2002 Honda Civic GX
• 2002 Honda Civic HX
• 2002 Honda Civic LX
• 2002 Honda Civic Si ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 5speed Manual)
• 2003 Acura RSX Base
• 2003 Acura RSX Type-S ( 2 door Coupe, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 6speed Manual)
• 2003 Honda Civic LX
• 2003 Honda Civic Si ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 5speed Manual)
• 2003 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.0L, RWD 6speed Manual)
• 2003 Honda Civic DX
• 2003 Honda Civic EX
• 2003 Honda Civic GX
• 2003 Honda Civic HX
• 2003 Honda Civic Hybrid
• 2004 Acura RSX Base
• 2004 Acura RSX Type-S ( 2 door Coupe, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 6speed Manual)
• 2004 Honda Civic DX
• 2004 Honda Civic EX
• 2004 Honda Civic GX
• 2004 Honda Civic HX
• 2004 Honda Civic Hybrid
• 2004 Honda Civic LX
• 2004 Honda Civic Si ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 5speed Manual)
• 2004 Honda Civic Value Package
• 2004 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.2L, RWD 6speed Manual)
• 2005 Acura RSX Base
• 2005 Acura RSX Type-S ( 2 door Coupe, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 6speed Manual)
• 2005 Honda Civic Si ( 2 door Hatchback, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 5speed Manual)
• 2005 Honda Civic Value Package
• 2005 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.2L, RWD 6speed Manual)
• 2005 Honda Civic DX
• 2005 Honda Civic EX
• 2005 Honda Civic EX Special Edition
• 2005 Honda Civic GX
• 2005 Honda Civic HX
• 2005 Honda Civic Hybrid
• 2005 Honda Civic LX
• 2005 Honda Civic LX Special Edition
• 2006 Acura RSX Base
• 2006 Acura RSX Type-S ( 2 door Coupe, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 6speed Manual)
• 2006 Honda Civic DX
• 2006 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.2L, RWD 6speed Manual)
• 2006 Honda Civic EX
• 2006 Honda Civic GX ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Automatic)
• 2006 Honda Civic Hybrid ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.3L, FWD N/Rspeed Automatic CVT)
• 2006 Honda Civic LX
• 2006 Honda Civic Si ( 2 door Coupe, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 6speed Manual)
• 2007 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.2L, RWD 6speed Manual)
• 2007 Honda Civic DX
• 2007 Honda Civic EX
• 2007 Honda Civic GX ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Automatic)
• 2007 Honda Civic Hybrid ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.3L, FWD N/Rspeed Automatic CVT)
• 2007 Honda Civic LX
• 2007 Honda Civic Si
• 2008 Honda Civic DX
• 2008 Honda Civic EX
• 2008 Honda Civic GX ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Automatic)
• 2008 Honda Civic Hybrid ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.3L, FWD N/Rspeed Automatic CVT)
• 2008 Honda Civic LX
• 2008 Honda Civic MUGEN Si ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 2.0L, FWD 6speed Manual)
• 2008 Honda Civic Si
• 2008 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.2L, RWD 6speed Manual)
• 2008 Honda S2000 CR ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.2L, RWD 6speed Manual)
• 2009 Honda S2000 Base ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.2L, RWD 6speed Manual)
• 2009 Honda S2000 CR ( 2 door Convertible, U/KHP 4 Cylinder Naturally Aspirated 2.2L, RWD 6speed Manual)
• 2009 Honda Civic DX
• 2009 Honda Civic EX
• 2009 Honda Civic EX-L
• 2009 Honda Civic GX ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Automatic)
• 2009 Honda Civic Hybrid ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.3L, FWD N/Rspeed Automatic CVT)
• 2009 Honda Civic Hybrid-L ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.3L, FWD N/Rspeed Automatic CVT)
• 2009 Honda Civic LX
• 2009 Honda Civic LX-S
• 2009 Honda Civic Si
• 2010 Honda Civic DX
• 2010 Honda Civic EX
• 2010 Honda Civic EX-L
• 2010 Honda Civic GX ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Automatic)
• 2010 Honda Civic Hybrid ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.3L, FWD N/Rspeed Automatic CVT)
• 2010 Honda Civic Hybrid-L ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.3L, FWD N/Rspeed Automatic CVT)
• 2010 Honda Civic LX
• 2010 Honda Civic LX-S
• 2010 Honda Civic Si
• 2011 Honda Civic DX
• 2011 Honda Civic EX
• 2011 Honda Civic EX-L
• 2011 Honda Civic GX ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.8L, FWD 5speed Automatic)
• 2011 Honda Civic Hybrid ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.3L, FWD N/Rspeed Automatic CVT)
• 2011 Honda Civic Hybrid-L ( 4 door Sedan, U/KHP 4 Cylinder Naturally Aspirated 1.3L, FWD N/Rspeed Automatic CVT)
• 2011 Honda Civic LX
• 2011 Honda Civic LX-S
• 2011 Honda Civic Si