Part No: MED-4140-ULTP
Regular price £208.33
Regular price Sale price £208.33 £173.61 EXC VAT
Availability: In Stock


Our most popular steel and back plate flywheel for the Mini, CNC machined from EN8 billet, which allows for more weight reduction than the standard cast flywheel.

The clutch face has been specially machined to accept either an MED Bonded ClutchMED Turbo Clutch or our narrow-section Racing Paddle Clutch.

The flywheel can be supplied with either pre-engaged or inertia ring gear, which is TIG welded in six positions after fitment.

  • Recommended for fast road and light competition engines.

  • Weighs 3.66kg - a considerable saving over the stock item.

  • Pre-engaged or inertia-style starter ring gear. 

  • Supplied with alloy drive strap spacers.

  • Steel back plate weighs just 1.32kg.

Please note - the flywheel will ideally need to be balanced before use.

Alternatively, we would highly recommend purchasing a complete kit, which is expertly assembled, centralised and balanced with all the components required. Kits are available in various specifications depending on your application, ready to bolt on.  

Please see the additional information tab for more advice.


Additional Information

Weight comparisons

Ultra Light Steel Flywheel     3.66kg
Ultra Light Steel Backplate   1.32kg

EN24T Steel Flywheel      3.55kg
EN24T Steel Backplate     0.87kg

X-Lite Steel Flywheel        2.50kg
X-Lite Alloy Backplate      0.74kg

Recommended usage

Upgrading to an MED steel flywheel not only saves weight, but also gives a more durable surface on which to grip the clutch plate. The lighter the flywheel, the faster the engine will be able to increase/decrease RPM, making it more free-revving and responsive to throttle input. The lightest possible clutch and flywheel setup is ideal for a competition car, whereas a road car will benefit from more flywheel mass to retain drivability in traffic. 

The MED EN8 Ultra Light is therefore an excellent choice for performance road cars - lighter than standard yet still usable on a daily driver. It could also be used for light competition. 

This flywheel will suit all transverse A-Series engines (Mini/Metro) with a pre-Verto clutch setup. It is possible to convert from Verto to pre-Verto by purchasing the MED Heavy Duty Clutch Operating Kit. Please note - this will not suit fuel-injected Rover Minis. See the MED SPi Flywheel or MED MPi Flywheel for these cars. 

Pre-engaged or inertia?

This relates to the ring gear and starter motor installed on your Mini. Inertia is the original style starter motor that uses a separate solenoid unit on the inner wing, whereas pre-engaged has an in-built solenoid. If you have one of our High Torque or Slimline starter motors, simply choose the correct flywheel to suit.

For reference, pre-engaged flywheels have 129 teeth on the ring gear, inertia types have 107 teeth.

Alternative options

The later Verto system introduced in the mid-1980s makes a good alternative for a performance road Mini. The steel flywheel itself is lighter than its pre-Verto equivalent, however the clutch cover that accompanies it makes the complete assembly heavier. The Verto setup gives an easier clutch pedal, so overall it's a good alternative for road Minis.  

Moving up in the range from our pre-Verto Ultra Light Steel flywheel, we offer an EN24T Ultra Light Steel Flywheel. EN24T offers greater tensile strength than our EN8 flywheel to reduce the chance of the flywheel fretting on the crankshaft in competition engines. The additional strength of EN24T also allows for extra weight saving, as we can safely machine more material away. 

Saving yet more weight is the MED X-Lite Flywheel, which features larger cut-outs and an integral ring gear for the starter motor.