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  See more parts for Acura RSX
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Supertech Dual Valve Spring for Acura Honda K20/K24/F20C1/F22C1 2000-2015, 30mm OD - SPR-H1021D

Supertech SPR-H1021D Valve Springs

Upgrade your engine's performance with the Supertech SPR-H1021D Valve Springs, crafted from premium Superclean Chrome Silicon Vanadium Steel Alloy. These springs are designed specifically for high RPM applications, ensuring durability and consistent performance under pressure. Whether you're pushing your Acura RSX or Honda Civic to the limits, these valve springs provide the reliability you need when it counts.

Performance and Design

The Supertech Valve Springs are engineered to maintain optimal wire stress levels, preventing any unwanted deformation even in extreme conditions. This means you can trust them to perform reliably during spirited driving or on the track. The improved memory of the materials used translates into enhanced performance, allowing your engine to breathe better and rev higher.

Specifications

  • Type: Dual Spring
  • Outer Spring OD: 30.00mm
  • Outer Spring ID: 21.80mm
  • Inner Spring OD: 21.30mm
  • Inner Spring ID: 15.5mm
  • Seat Pressure: 95 @ 40.4mm
  • Open Pressure: 253 @ 12mm
  • Max Lift: 17.70mm
  • Coil Bind: 22.70mm
  • Rate: 13.2mm
  • Retainer: RET-K20A2/T2 + SEAT-H1020D

Fitment

  • Acura RSX 2002-2006
  • Acura TSX 2004-2014
  • Honda Accord 2003-2015
  • Honda Civic 2002-2011
  • Honda CR-V 2002-2012
  • Honda Crosstour 2012-2015
  • Honda Element 2003-2011
  • Honda S2000 2000-2009

What Owners Are Saying

Acura RSX owners have reported noticeable improvements in throttle response and engine stability after installing the SPR-H1021D springs. One user mentioned, "After swapping to these valve springs, my RSX feels more alive at high RPMs, and I can push it harder without worrying about valve float." Similarly, Honda Civic enthusiasts praise the upgrade, with one stating, "These springs made a huge difference in my Civic's performance; it revs smoothly all the way to the redline."

Whether you're a weekend warrior or a daily driver, the Supertech SPR-H1021D Valve Springs are a solid choice for anyone looking to enhance their engine's performance. Make the smart upgrade today and experience the difference!

Other Part Numbers:
Supertech #sptSPR-H1021D

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle Make/Model
Acura RSX 2002-2006 Base
Acura RSX 2002-2006 Type-S
Acura TSX 2004-2014 Base
Acura TSX 2010-2014 V6
Acura TSX 2012-2014 Special Edition
Acura TSX 2012 A-Spec
Acura TSX 2013-2014 Tech
Acura TSX 2013-2014 V6 Tech
Acura TSX 2013-2014 Premium
Honda Accord 2003-2015 EX
Honda Accord 2003-2015 LX
Honda Accord 2003-2005 DX
Honda Accord 2003 Coupe
Honda Accord 2005-2007, 2014-2015 Hybrid
Honda Accord 2005, 2011-2012 SE
Honda Accord 2006 LX Special Edition
Honda Accord 2006-2007 Value Package
Honda Accord 2007-2015 EX-L
Honda Accord 2007 Special Edition
Honda Accord 2007 LX SE
Honda Accord 2008-2015 LX-S
Honda Accord 2008-2012 LX-P
Honda Accord 2012 HFP
Honda Accord 2013-2015 Touring
Honda Accord 2013-2015 Sport
Honda Accord 2014-2015 Hybrid EX-L
Honda Accord 2014 Plug-In
Honda Accord 2014-2015 Hybrid Touring
Honda CR-V 2002-2003 Base
Honda CR-V 2002-2012 EX
Honda CR-V 2002-2012 LX
Honda CR-V 2005-2006, 2011 SE
Honda CR-V 2005-2012 EX-L
Honda CR-V 2012 Touring
Honda Civic 2002-2005 HX
Honda Civic 2002-2011 LX
Honda Civic 2002-2011 DX
Honda Civic 2002-2011 Si
Honda Civic 2002-2004 SiR
Honda Civic 2002-2011 EX
Honda Civic 2002-2011 GX
Honda Civic 2003-2011 Hybrid
Honda Civic 2004-2005 Value Package
Honda Civic 2005 LX Special Edition
Honda Civic 2005 EX Special Edition
Honda Civic 2005 Reverb
Honda Civic 2006-2007 EXS
Honda Civic 2006-2007 LXS
Honda Civic 2008-2011 EX-L
Honda Civic 2008 MUGEN Si
Honda Civic 2008-2011 DX-G
Honda Civic 2009-2011 Hybrid-L
Honda Civic 2009-2011 LX-S
Honda Civic 2009-2010 Sport
Honda Civic 2011 Base
Honda Crosstour 2012-2015 EX-L
Honda Crosstour 2012-2015 EX
Honda Element 2003-2011 EX
Honda Element 2003-2004 DX
Honda Element 2004-2011 LX
Honda Element 2007-2010 SC
Honda S2000 2000-2009 Base
Honda S2000 2008-2009 CR

Supertech Banner

Who is Supertech?

Supertech is a company located in Silicon Valley San Jose, California. It is the place where companies with the most cutting-edge technology are located. It allows Supertech to gain access to the latest technology that helps them create high-quality products.  Supertech is known for manufacturing some of the best aftermarket internal engine parts in the industry. Today, they are considered the leading brand in their market segment.

Valve Train Component Experts

With over 30 years of experience, Supertech was able to develop products that meet the demands of their customers. They offer high-performance valves and valvetrain components that are used by many engine builders and tuners everywhere.

Racer’s Brand Of Choice

Supertech provides the motorsport industry with top-notched products for virtually any type of racing discipline. Whether it’s Road Racing, Drag Racing, or Rally, they have the right parts for you. Each piece is carefully designed and manufactured to provide optimum performance and give racers the competitive advantage they need to win championships.

Purchase Supertech Products At Vivid Racing

If you are in the market for high-quality performance parts for your engine, Supertech is the brand for you. The company has always been on edge in creating innovative products that would keep up with the fast-changing automotive trend. Whether for the tracks or the street, Supertech guarantees that you will only get the best products from them. To know more about Supertech, visit Vivid Racing and check out their list of parts that fit your specific needs.



Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantability, or fitness for a particular purpose.

Supertech Performance Inc. shall not, under any circumstances, be liable for any special, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue, cost of purchased or replacement goods, or claims of customers of the purchase, which may arise and/or result from sale, installation or use of these parts.

The sole obligation of Supertech Performance Inc., shall be limited only to the products to be found defective, in either workmanship or material, after inspection performed by our company. This Limited Warranty applies only to the original purchaser of the product and only covers the replacement or repair of the product at our election.

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