Clutch assembly (kit) 46 tooth 5, 6 or 7 plate, MB


This is our 46 tooth MB Race-Tour uprated internal clutch assembly.

With the correct plate set up it will take any power you want.

Simple easy to fit using standard Lambretta workshop tools and standard parts.

Interchangeable with other products.

It comes complete with:

  • 46 tooth MB CNC hardened crown wheel
  • Extended MB CNC hardened clutch flange
  • Deepened MB CNC hardened clutch spider
  • Clutch nut
  • Clutch tab washer
  • MB Clutch springs
  • Clutch needle bearing x 2
  • Clutch circlip

Requires either our 5 clutch plate kit or our 6 plate clutch kit or create a 7 plate or use your own plates.

Read more here

Clutch assembly (kit) 46 tooth 5, 6 or 7 plate, MB
  • Clutch assembly (kit) 46 tooth 5, 6 or 7 plate, MB
  • Clutch assembly (kit) 46 tooth 5, 6 or 7 plate, MB
  • Clutch assembly (kit) 46 tooth 5, 6 or 7 plate, MB
  • Clutch assembly (kit) 46 tooth 5, 6 or 7 plate, MB
  • Clutch assembly (kit) 46 tooth 5, 6 or 7 plate, MB

£ 327.74
Price: £ 273.12 Ex Vat

Related Items (3)


  • Light weight with hardened clutch bearing bush so improved needle roller bearings can be used.
  • Machined deeper so 4, 5 or 6 plates can be fitted and helps prevent clutch drag.


  • Made in the UK using modern heat trated steels, lightened and precision CNC machined.
  • Can be used as a MRB kit or each part can be used individually
  • Works in a standard or tuned engine

Development History

  • Mark Broadhurst designed these new Race-Tour 4, 5 or 6 plate clutch assemblys
  • Fed up with clutch slip we developed these kits
  • There was a need for a mass produced precision clutch kit that worked within a budget
  • This is a development of the original MRB external clutch kit

Reasons to Buy

  • Lightweight
  • Strong
  • Hardened
  • Precision machined
  • Adjustable lift
  • No rock
  • Easy fit
  • No packer required
  • Only two simple mods required


Works with various clutch set ups
  1. MRB 5 plate kit MRB0760K these use 5 x Surflex B plates and 4 x 1.5mm steels
  2. You can reduce the 1.5mm to 1.2mm steels for more clearance
  3. You can use 6 x Green or Red plates with 5 x 1.2mm steels
  4. Or you can use 6 x Green or Red plates with 1.2mm steels and 2 x 1.5mm (at the bottom)
  • Use a 3mm or 2.5mm top clutch plate
  • Always bend the tags down 20/30 degrees on the top clutch friction plate
  • Always file 1mm off the first fitted steel plate at five tags to clear fouling the pressure plate
  • Always dial gauge the crown wheel with the front drive sprocket to improve chain life
  • Always check sprocket lift and shim up to suit
  • Always fit new end plate bearings and clutch needle bearings
  • Make sure both clutch friction, steel, pressure plate fit and slide up and down freely
  • Always soak clutch plates in ST90 for 24 hours before fitting
  • Always use a clutch holding tool to tighten the clutch nut

Reviews ( 1 )


5 star 1. Billy H 07 Jan 2014 

Just got my MRB 46 tooth uprated clutch kit. Haven't installed it yet but the build quality is stunning. Looks like it came from the McLaren Technology Center. I'm sure Mark could teach that lot a thing or too. Can't wait to install this once I'm done marveling at it..!

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Questions? ( 2 )

Do you have a Question?

If you would like to ask us a question about this product, please feel free to click here to ask a Question Now!

Neal on 02 Jan 2016 asked "Will this clutch kit fit into the standard sil case in 5/6/7 plate conditions?"

MB Scooters Ltd replied: Yes it will, a straight fit

Giancarlo on 08 Nov 2010 asked "I have a question about "Clutch assembly kit, 46 tooth 4, 5 or 6 plate, MRB" What clutch plates can i use with this setup? Do you sell them?"

MB Scooters Ltd replied: We do this kit MRB0760K look at the tip section and it explains about clutch plates.

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