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06-11 Honda Civic Si Lightened Flywheels

A lighter flywheel drastically reduces the rotating mass attached to your crankshaft, allowing your car to rev and accelerate faster. There are a variety of flywheel styles and weights available for the 06-11 Civic Si. Some people find extremely light flywheels uncomfortable for daily driven applications, so choose carefully. Please call and talk to a sales representative for more information.


Competition Clutch Steel Flywheel

Installation of a lightweight flywheel on your engine will reduce rotational mass on the crankshaft, producing faster revs, less drive train loss, quicker acceleration and more power to the wheels. The Competition Clutch ST lightweight flywheels are designed for street/strip driven applications and are well suited for Stage 1 and Stage 2 clutch kit counterparts. The STU ultra lightweight flywheel is even lighter, designed for extremely fast gear changes and recommended for Stage 3 and up clutch upgrades only. All Competition Clutch lightweight flywheels are CNC machined and balanced to OE specifications exceed SFI 1.5 quality assurance specifications. Unlike many other brands, the Competition Clutch ST flywheel is compatible with ALL performance and stock clutch assemblies for ultimate versatility.


  • Specs:
  • Material: Steel
  • ST Flywheel Weight: 11.5
  • STU Flywheel Weight: 11.0
  • PLEASE NOTE: STU flywheels are designed for racing. Most drivers will find a STU flywheel extremely difficult to drive in a street or daily setting.
  • FITMENT:
  • Honda Civic Si 2006-2011
Description Part # MSRP Price Inventory  
ST Flywheel 2-800-ST $266.32 $242.11 5 available
STU Flywheel 2-800-STU $280.39 $254.90 6 available
Fidanza Aluminum Flywheel

Fidanza Aluminum Flywheels are made from 6061 T6 billet aluminum for superior strength and weight reduction. Fidanza flywheels are CNC machined at a constant speed for precise fit and finish, and feature a replaceable 1045 high-carbon steel friction plate with AN military-grade fasteners and a hardened 1050 ring gear. You will never have to replace your flywheel again as you can just swap friction plates, and reinstall. All these features make this a quality lightweight flywheel at a great price.

The Fidanza 06-10 Civic Si flywheel is SFI Certified, and now weighs 8 pounds, resulting in no check engine lights or misfire codes.


  • Notes:
  • Material: Aluminum
  • Weight: 8 lbs
  • The pilot bearing will fit loosely when installed, but will tighen as the flywheel heats up and the aluminum expands. Please refer to manufacturer's literature for more information.
  • FITMENT:
  • Honda Civic Si 2006-2011
Description Part # MSRP Price Inventory  
Aluminum Flywheel 191471 $273.00 $189.00 8 available
SPEC Aluminum Flywheel

SPEC aluminum flywheels are CNC machined and exceed SFI standards for high stress racing applications. The SPEC lightweight flywheels are recommended for highly modified street or racing vehicles. The body of the flywheel is made of tempered aluminum, either 6061 T6 or 2024 T3, for ultimate strength and lightest possible weight. The 1/4 inch thick friction plate is a 1050 high carbon alloy, for incredible durability with any friction disc material, even iron. The plates are secured to the body by aerospace fasteners. The ring gears are pressed on and secured with grade 10 fasteners. They gear is also heat treated for longevity.


  • Weight:
  • 8 lbs.
  • FITMENT:
  • Honda Civic Si 2006-2011
Description Part # MSRP Price Inventory  
Aluminum Flywheel SA74A $414.81 $377.10 Ships from factory in 3-5 days
Clutch Masters Flywheels

Made from 6061-T6 aircraft grade billet aluminum or steel with a replaceable high-carbon steel friction surface and an OEM steel ring gear secured by bolts, Clutch Masters flywheels are some of the finest available on the market. Each unit is certified to meet SFI Spec 1.1 or 1.2 and is backed by a limited lifetime warranty.


  • Weights:
  • Aluminum: 10 lbs
  • Steel: 12 lbs
  • FITMENT:
  • Honda Civic Si 2006-2011
Description Part # MSRP Price Inventory  
Aluminum Flywheel FW-037-AL $381.15 $339.57 1 available
Steel Flywheel FW-037-SF $331.65 $295.47 2 available
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18902

Tel: 215.489.2820
Fax: 215.489.2826