Dual Mass to Solid Flywheel Conversion

Dual mass flywheels (DMF) are now in most modern vehicles and dampen the torsion vibration from the crankshaft, allowing for a smooth quiet driveline.

The downside to this is when the clutch needs replacing the flywheel also needs to be replaced as the flywheel wears at the same rate as the clutch. Although the flywheel face can successfully be machined it is not recommended because of two reasons. 

  1. The flywheel face is think and is prone to warp
  2. The internal components of the flywheel may be worn


NPC is at the forefront of Dual mass to Solid Mass Flywheel (SMF) replacement design and manufacture in Australia. We have successfully designed and trialled most solid replacement flywheels offering an alternative to the factory dual mass flywheel.

There are also downsides to the solid mass flywheel conversions but also many positives

  1. The SMF conversion improves the ability to dissipate heat from the clutch, which gives more life expectancy
  2. When designing the SMF conversions, NPC chooses to fit a reliable and conventional style clutch in place of the factory type self-adjusting clutch
  3. Costs are a large factor in the production of the SMF conversion and utilising the NPC brand can save the buyer up to one-third the cost of conventional conversions.
  4. When the clutch requires replacing the SMF system can easily be machined
  5. Improves engine response & acceleration
  6. After fitting to our own Mazda BT50 we noticed better fuel economy & the ability for the vehicle to crawl at low rpm without the engine stalling
  7. Better clutch engagement feel, particularly useful when reversing caravans/trailers


The downside differ. The most common problem encountered is when motor is under labour. A gear roll over noise will be noticed until the engine is no longer laboured.

The easiest way to solve the problem is to use the correct gear for the engine rpm.


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