Clutch Masters Flywheels are designed and tested to ensure the safety and quality of every flywheel. Years of R&D has given us the knowledge and firsthand experience to choose wisely the best material to manufacture flywheels that will surpass your expectations. Depending on the application, the majority of Clutch Masters flywheels are made from 6061 T6 Billet Aluminum, 1045 or 4140 Billet Steel. Clutch Masters Flywheels are SFI Certified meeting performance standards for the automotive and motorsport industry.

Flywheels

Benefits of a Clutch Masters Light Weight flywheel:

  • Light-weight for improved performance and Quicker Rev’s.
  • (Aluminum Flywheels) Consist of a replaceable heat shield (friction surface), eliminating need to resurface flywheel.
  • Reduces turbo “lag” in turbo-charged engines.
  • Increased supercharger efficiency due to less drag on the crank.
  • Improved mid-range torque in naturally aspirated engines.
  • CNC Machined and balanced.
  • SFI Certified.

Going from a Dual-Mass Flywheel (DMF) to a Single-Mass Flywheel (SMF):

A Dual Mass Flywheel (DMF) is a flywheel in two concentric parts or two facing flywheels stuck together with flexible compound to damp down transmitted vibration and gear rattle for the gear box. Many newer model vehicles now come standard with a factory DMF. Many times enthusiast choose to replace a DMF with a SMF and here is why:

  • DMF’s tend to be more expensive than a SMF.
  • DMF’s are not designed to be resurfaced like conventional SMF.
  • DMF’s usually weigh 30+ lbs depending on the application which will cause unwanted turbo lag.
  • DMF’s cannot withstand a high rate of abuse and may fail under spirited driving.

Benefits of switching to a SMF:

  • Reduced mass equals increased acceleration.
  • Reduces turbo “lag” in turbo-charged engines.
  • Increased supercharger efficiency due to less drag on the crank.
  • Improved mid-range torque in naturally aspirated engines.
  • SMF are able to be resurfaced and can be reused.

*** Clutch Masters offers Aluminum or Steel SMF depending on the application. We recommend you replace your DMF with a Steel SMF if the vehicle will be driven on the street since it will produce less noise and will be more pleasant to drive on the street compared to an Aluminum SMF. Aluminum flywheels are only recommended for race applications looking to have the least amount of weight as possible. By replacing a DMF with a SMF you may experience gear rattle and a vibration that may not be suitable for everyone. SMF may also reduce the life expectancy of a clutch kit depending on the application.
Replacing your OEM flywheel with a light weight flywheel may cause gear noise or a vibration that may not be suitable for everyone. The lighter the flywheel the more gear noise will be produced. Depending on the application Clutch Masters usually recommends Steel flywheels rather than Aluminum flywheels since Aluminum flywheels will cause more gear noise. Aluminum flywheels are usually only recommended for race applications looking to have the least amount of weight as possible. A light weight flywheel may affect the life expectancy of a clutch kit depending on the application.
6061 Bilet Aluminum:

Clutch Masters’ aluminum flywheels are precision machined on our CNC machines to exact tolerances for a perfect fitment on your application. All aluminum flywheels are machined from a solid 6061 T6 billet. Our billets are sourced from US manufacturers and are guaranteed free of impurities or defects. Throughout the machining process every flywheel is checked to make sure the flywheel is built to spec and that all critical measurements are within tolerance. After the flywheels are machined they are Mil-Spec anodized in our in house, top of the line, anodizing system. Once anodized they receive final assembly with their replaceable steel insert being torqued down, pilot bearing installed (if applicable) and a thorough once over is given to the flywheel before it is packaged up and ready for your project! All aluminum flywheels come with a replaceable steel insert and are SFI certified for use in all sanctioned racing bodies.

Aluminum Flywheel
4140 STEEL:

Clutch Masters’ steel flywheels are precision machined on our CNC machines to exact tolerances for a perfect fitment on your application. Our steel flywheels are machined from 1045 or 4140 billets that are sourced from US manufacturers and are guaranteed free of impurities or defects. Some of our very popular ultra-light steel twin disc flywheels used for racing are forged chromoly pieces that are then finished to exact tolerances. As our steel flywheels are being machined, a Clutch Masters craftsman continuously checks each flywheel throughout it’s build to make sure it has been machined to exact specifications and every critical measurement is within tolerance. All of our steel flywheels receive a black oxide coating to ensure they stay rust free for the life of the flywheel. After they are coated they are laser engraved with our logo and part number, boxed up and ready for your project! All steel flywheels are SFI certified for use in all sanctioned racing bodies.