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- Free shipping over $149
- 14-day returns
- Text us: (408) 800-6717
- Serving enthusiasts since 2015
Vehicle fitment
Check fitment for your vehicle
Our fitment guarantee
Every part sold with your year, make, and model set on our store, or by a member of our sales team, is guaranteed to fit your application. Wheels and lug nuts are covered for the specification we state.
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Wrong application
If our fitment data or our team got it wrong, contact us and we’ll exchange it for the correct part or refund you, with a prepaid shipping label. No restocking fee and no shipping charges.
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Damaged on arrival
Covered on every order, vehicle set or not. Inspect your parts when they arrive and tell us within 48 hours: we arrange the exchange with the manufacturer and get a new part to you.
You’ll receive the parts you expect in brand new condition, or your money back.
Read the full fitment guaranteeProduct fitment coverage
- 2002-2006 Acura RSX
- 2002-2006 Acura RSX Type S
- 2006-2011 Honda Civic Si
- 2012-2015 Honda Civic Si
Complete your install
Product overview
Product overview
Honda officially calls these the "First-2nd Select Spring" and "Fifth-Sixth Select Spring." They are the parts in your transmission that are (partially) responsible for your shifter centering itself when in neutral. By increasing the rate and preload of these springs, it's possible to realize a more decisive centering action for a sportier shift. ACUITY's K-Series Transmission Performance Spring Upgrade uses thicker wire and additional preload to provide a very satisfying, quick centering motion. This mod is particularly attractive because it provides such a noticeable change at a rather low price.
- Increases shifter centering force by approximately 50%
- Increased spring force makes shifter centering more "snappy"
- black-oxide coated for better oil retention
Vehicle fitment
Vehicle fitment
- 2002-2006 Acura RSX
- 2002-2006 Acura RSX Type S
- 2006-2011 Honda Civic Si
- 2012-2015 Honda Civic Si
Warranty
Warranty
Questions about coverage?