This auction is for a new billet steel solid flywheel for the V10 S85 engine as fitted to E60/1 M5's and E63/4 M6's. Weighing approximately 8.4kgs and designed to take the standard twin plate clutch, the flywheel is considerably lighter than the standard item.

They are a straight swap for the bulky and heavy standard dual mass flywheel and will be supplied with full fitting instructions. Unlike the dual mass flywheel they will not need replacing and because they weigh considerably less than the standard flywheel your engine will pick up revs much quicker and be more responsive to throttle movement. These flywheels are only available through BBB-Powertrain and are available for shipping immediately subject to stock levels.

BBB-Powertrain ultra-lightweight steel flywheels are CNC machined from a single billet of hardened chromium molybdenum (chrome-moly) steel. Our flywheels are machined after the hardening process, which means they are not subject to the uncorrected distortion seen in flywheels machined prior to hardening. Machining the previously hardened chome-moly steel is obviously a more challenging and expensive process, but the benefits include perfectly aligned clutch and crankshaft mounting flanges, a perfectly flat clutch mating surface, and identical ring gear shape and tooth spacing.

BBB-Powertrain billet steel flywheels are prodigiously strong and durable, yet at a mere 8.4kgs they weigh less than most aluminum flywheels! Furthermore, much of the weight saving has been achieved close to the outer edges of the flywheel, nearest the ring gear, where reduced mass has the greatest affect on the moment of inertia.

All our billet steel flywheels are supplied dynamically balanced on two planes. They are designed to be used with a standard clutch but alternatives are available.

Truly one of the highest quality components on the market today from BBB-Powertrain and a must for performance and reliability on your standard or uprated BMW engine.

The flywheels  are produced by a well respected engine component manufacturer with years of motorsport experience and supplier to works motorsport teams, BTCC teams and suppliers to major clutch companies and car manufacturers. 

The range of flywheels available covers the entire BMW range and has been greatly extended so we can offer a replacement uprated flywheel for just about any car in the BMW range including including petrol and diesel variants and the M power cars.    

Flywheels are available in standard clutch fitment and race clutch fitment and we can supply a standard clutch or race spec paddle clutch to your requirements. 

Our flywheels are fitted to many road cars with owners reporting tremendous releases in power from the engine to the wheels as a result of the weight saving in fitting a lighter balanced flywheel. They are an ideal and cheaper replacement to the dual mass flywheel which has a limited life and once fitted you will not need to worry about the flywheel wearing out as it is a single piece of precision engineered steel.

We can also supply an uprated clutch to go with the flywheel if required, please contact us for details and costings. 

Race and track versions are also available and coming out now are our new range of drift spec flywheels and clutch combinations offering single plate and twin plate set ups for race and drift prepared cars putting out more than standard BMW power and offering a clutch that will put up with the hardships of drifting.

Also available for the S85 is a conversion flywheel to take the S62 gearbox and clutch with altered set up height to allow ease of installation and conversion. Please get in touch or see my other items.

Please call or email with your requirements and speak to Richard who can take your details and price the right application of flywheel and clutch for you. 

The price stated includes VAT at current UK rate of 20%. Items will be supplied with VAT receipt if required. Trade accounts can be set up and multiple purchase discounts applied too.

Shipping is not a problem, on a single flywheel it starts at $120 AUD from the UK 

Tel 07858 151 197 for all enquiries.

We can also supply lightweight flywheels for other manufacturers too, please contact us with your requirements.

A better product is not out there but a better price may be arranged if you contact me directly.