SMF Kits

National Auto Parts has been suppling high-quality Single Mass Flywheel (SMF) clutch kits to the automotive aftermarket since 2007.

Prototyping 2005 - 2006

Billet flywheels made at NAP’s Nottingham facility. Extensive vehicle trials were carried out as proof of concept.

Mercedes Benz Sprinter 2.3D

VW Polo Mk4 1.9D

GM Frontera 2.3 TD

2007 launch

After the prototyping and proof period, the first two to launch were the Mk6 Transit 2.4 TD, and the VAG 1.9 TD.

Sales to date of these two kits have exceeded 115,000.

First to market

The ability to offer products that are new to the aftermarket is an important aspect of NAP’s development program, and is often customer led. All of these SMF clutch kits were introduced to the market first by the team here at National Auto Parts.

Launched 2010
CK9836F – Ford Focus Mk1 1.8 TDCi, Transit Connect 1.8 TDCi


Launched 2010
CK9893F – Vauxhall Combo & Corsa van 1.3 CDTi


Launched 2010
CK9813F – Mk3 Mondeo 2.0 TD / TDCi 115ps


Launched 2011
CK9828F – Mk3 Mondeo 2.0 TD / TDCi 115ps & 130ps 10/02->


Launched 2013
CK10072F – Jaguar X Type 2.0D


Launched 2014
CK10076F – Vauxhall Vectra 1.9CDTi 150ps (F40 gearbox)


Launched 2014
CK10077F – Vauxhall Vectra & Astra 1.9CDTi 150ps (M32 gearbox)


Launched 2015
CK10052F – MkIII Mondeo 1.8 & 2.0 16v petrols 10/02 ->


Launched 2015
CK10028F – MkIII Mondeo 1.8 & 2.0 16v petrols -> 9/02


Launched 2017
CK10256F – BMW E87 118d, 120d, E90 320d. M47 engines

Unique to NAP

We are known for developing SMF kits to suit customer requirements and have many kits in the marketplace that are unique to the National Auto Parts brand. We welcome enquiries on future kit and solution creations.


Land Rover Defender & Discovery TD5


T5 Transporter 2.5 Tdi

CK10363F – CK9908F

Apps with stop start

Our 2021 range

  • 81 SMF kits in range, with more under development.
  • On-site test & analysis equipment used to ensure the perfect specification.
  • DMFs tested prior to development to analyse characteristics.
  • Heavy-duty friction materials used on LCV and high-performance applications.
  • 100% balance testing of flywheels.
  • High tensile grade 12.9 crankshaft bolts included in all SMF kits, clutch cover bolts where required.

Ready for the details?

View our full product catalogues here.